ore

JHR 38: 19-35 (2014) JOURNAL OF | *0eerrvewed opevaccersjoural
SiGe orate (f-) Hymenoptera

www.pensoft.net/journals/jhr The iternatonl Sociey of Hymenopeariss, RESEARCH

Description of a new chrysidid genus from New
Caledonia (Hymenoptera, Chrysididae, Amiseginae)

Lynn S. Kimsey'*

| Department of Entomology, University of California, Davis, California 95616, USA
T Attp://zoobank.org/ADC91LA84-7D87-41E4-A4B3-87BA1041D7DD

Corresponding author: Lynn S. Kimsey (lskimsey@ucdavis.edu)

Academic editor: W/ Pulawski | Received 3 March 2014 | Accepted 28 April 2014 | Published 12 June 2014
http://zoobank. org/AFB87080-D3AF-44A2-A715-8F8D2CF86BE1

Citation: Kimsey LS (2014) Description of a new chrysidid genus from New Caledonia (Hymenoptera, Chrysididae,
Amiseginae). Journal of Hymenoptera Research 38: 19-36. doi: 10.3897/JHR.38.7416

Abstract

Generic placement of the amisegine species Atoposega decorata Kimsey, 1995, is reexamined and is moved
to the new genus, Noumeasega. In addition, three new species, N. bicolorata, N. kaoriensis and N. neo-
caledonica, also from New Caledonia are described and placed in Noumeasega. Traits that distinguish
Noumeasega from Atoposega Krombein, 1957 and Mahinda Krombein, 1983, are described, and a key to
the species is provided along with distribution map and images. In addition, unlike Atoposega, males are

associated with females in Noumeasega.

Keywords
Atoposega, Mahinda

Introduction

The genus Atoposega Krombein, 1957, is recorded from south Asia and New Caledonia.
However, the New Caledonian species, Atoposega decorata Kimsey, 1995 is an extreme
geographic outlier and lacks many of the characteristics diagnostic for the other species
of Atoposega. Further collecting has revealed that all of the New Caledonian Amiseginae
are congeneric and are distinct from Azoposega. In addition, both males and females are
present making sex associations possible, unlike the situation in Atoposega.

Copyright Lynn S. Kimsey. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0),
which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

20 Lynn S. Kimsey / Journal of Hymenoptera Research 38: 19-35 (2014)

Among the New Caledonian species, decorata differs from Atoposega species in
a number of critical modifications of the mesopleuron, propodeum and _ hindcoxa.
Because of these differences it is clear that the New Caledonian species are not conge-
neric with Atoposega. The only other genus that has females with elongate, spine-like
propodeal angles is Mahinda Krombein, 1983, but decorata also differs in these char-
acteristics from species of Mahinda. As a result a new genus, Noumeasega, is proposed
for the New Caledonian species.

The biology of Noumeasega species is unknown.

Materials and methods

Specimens were borrowed from the following institutions and/or these are the type
repositories: BME — Bohart Museum of Entomology, University of California, Davis,
USA; BPBM — Bernice P. Bishop Museum, Honolulu, Hawaii, USA; INHS -— Illinois
Natural History Survey, Urbana, USA; MCZ — Museum of Comparative Zoology,
Harvard University, Cambridge, Massachusetts, USA; and QM — Queensland Mu-
seum, South Brisbane, Queensland, Australia.

Terminology follows that of Kimsey and Bohart (1991).

Key to distinguish the genera Atoposega, Mahinda and Noumeasega

1 Metasomawith D-visibleseenientessmales:. ie. euuah oes U8 nssidladte rate codctice artnet 2
Metasoma with 4 visible segments, ovipositor tube usually visible; females.... 3
Ds Omaulus absent or consisting of simple carina along edge of punctation sepa-
rating lateral from ventral mesopleural margins (Fig. 4); mesopleuron with
parallel-sided posteromedial groove, without carinate edge (Fig. 7)...........4.
Bele SOAs Dec At Sea ER ae nt Saas RES Noumeasega Kimsey, gen. n.
= Omaulus well-developed, ridge-like, with ladder-like lateral septa (as in
Fig. 2); mesopleuron with posteromedial U-shaped carina-margined fossa (as
1 Shes) eas Sal Ry Reaa Eo AO a A So Mahinda Krombein*
3 Omaulus absent or consisting of simple carina along edge of punctation sepa-
rating lateral from ventral mesopleural margins (Fig. 3); mesopleuron with
parallel-sided posteromedial groove, without carinate edge (Fig. 6); forewing
stigma short, broad, without indication of R1 vein, 3x as long as broad be-
VORd FUN ClUTE OL RS SEL Avs eves aus toned Noumeasega Kimsey, gen. n.
— Omaulus well-developed, ridge-like, with ladder-like lateral septa (Fig. 2);
mesopleuron with posteromedial U-shaped carina-margined fossa (Fig. 5);
forewing stigma apically narrowed into slender, vein-like R1, 5x or more as
lone as‘broad-orstrong)y brachiypterOus fose.c6 rong cess Peveser seveouctavsreunteeaestvencen’ &
4 Fully winged; hindcoxa with two dorsal longitudinal carinae (Fig. 2); propo-
deum without angles at top of posterior declivity........ Atoposega Krombein

Description of a new chrysidid genus from New Caledonia... 21

= Brachypterous; hindcoxa with one dorsal longitudinal carinae (as in Fig. 3);

propodeum with sharp submedial angles or teeth at top of posterior declivity ..

Ce ep nota rmemcenncrnree Be Specie > ter Haren ppnay coher penian iB a Mahinda Krombein

* Characteristics of the mesopleuron, propodeum and hindcoxa suggest that male

Mahinda as described by Krombein are not congeneric with the females and may actu-
ally be male Azoposega.

Systematics

Noumeasega Kimsey, gen. n.
http://zoobank.org/ DCBD952D-87FC-47F8-A37 1-8BAD3033AF96
http://species-id.net/wiki/Noumeasega

Diagnosis. Females of Noumeasega species most closely resemble those of Atoposega
and less so Mahinda based on the acute or spine-like propodeal angles and forewing
with an arcuate Rs vein (Figs 2, 3). Male Noumeasega resemble male Mahinda, but dif-
fer in having the posterior propodeal declivity with an ovoid enclosure, which is absent
in Mahinda. Both sexes differ from those of Atoposega in having the hindcoxa with a
single longitudinal carina (two in Atoposega), the mesopleuron lacking an omaulus
or the omaulus represented by a simple carina or line along the edge of punctation
separating the lateral from the ventral mesopleural surfaces (Figs 4, 5) versus a well-
developed and ladder-like omaulus in Atoposega (Fig. 2); mesopleuron with parallel-
sided posteromedial groove (Figs 6, 7), which is dorsally carinate and U-shaped in
Atoposega (Fig. 5). Noumeasega can be distinguished from other amisegine genera by
these characters and by the dentate tarsal claws, malar space with a vertical sulcus, fe-
male propodeum with acute or spine-like lateral angle, frons without transverse carina,
vertex without longitudinal welt, pronotum with medial longitudinal pit and short
sulcus and pit adjacent to lateral posterior lobe, mesopleuron without scrobal sulcus,
metanotal dorsal enclosure usually V-shaped, and propodeum with two dorsomedial
decumbent teeth, and propodeal declivity smooth and impunctate, with longitudinal
medial carina.

Description. Body length. 3-7 mm.

Head. Occipital carina present only dorsally; eyes with tiny sparse setulae; eye not
encircled by carina; scapal basin flattened, narrow and cross-ridged; malar space with
vertical groove; female flagellum short, fusiform and flattened on one surface, inter-
mediate flagellomeres broader than long; male flagellomeres cylindrical, more than 3x
as long as broad.

Mesosoma. Pronotum with posteromedial groove and deep pit before lateral lobe;
scutum with notauli present, sometimes obscured by sculpturing, without parapsides;
mesopleuron evenly punctate; omaulus faint, indicated by simple carina or forming
edge separating lateral from ventral surfaces; scrobal sulcus absent; metanotum elon-
gate, subequal in length to scutellum, with triangular medial enclosure (except in neo-

22 Lynn S. Kimsey / Journal of Hymenoptera Research 38: 19-35 (2014)

caledonica); propodeum dorsal surface bending abruptly to posterior declivity, lateral
angles long and spike-like; hindcoxa with single dorsobasal carina; tarsal claw with
large medial tooth; female fully winged; forewing medial vein arising at or more often
before cu-a, Rs extended at abrupt angle by dark streak in females; wings densely setose
and often banded.

Metasoma. Terga highly polished with tiny widely scattered punctures (females) or
denser, evenly dispersed punctures (males); sternum I produced into large basal keel.

Type species. Noumeasega kaoriensis Kimsey, sp. n.

Etymology. Noumea — the capital city of New Caledonia; sega — the name ending
of most amisegine genera.

Distribution. Noumeasega species are only known from New Caledonia (Fig. 1).

Remarks. Sex associations are not easy to make in the subfamily Amiseginae. Fe-
males are often wingless and ant-like, with fully winged males. Even in winged forms
males and females are generally structurally quite different, with different wing vena-
tion, punctation, antennal dimensions, thoracic and leg modifications, and coloration.
In the New Caledonian Noumeasega sex associations are possible for two reasons. First,
there is only one generic entity on the island. Thus the males and females are conge-
neric. Second it is possible to associate males and females in some of the species based
on peculiarities of coloration, size and/or geography.

Key to the species of Noumeasega

1 Four external metasomal terga; antennal segments II-IX less than twice as
long as broad; mandible apically simple, with acute apex; females............... 2
= Five external metasomal terga; antennal segments H-IX more than twice as
long-as, broad; imandible‘apically bidentate; males «2.2... cc.scscctesenebeosencncsvedeness 5
2 Forewing with light and dark bands; propodeal angle elongate, spine-like ..3
_ Forewing evenly brown tinted or untinted; propodeal angle forming short
ACULE BAC IESOP LOGUE teas sii San cd Seu tahGs ae dialachekdis PGA sued sewn oal seth athe sauidaes 4
3 Head, mesosoma and metasoma bright metallic blue, metasomal tergum II
with large white sublateral spot; flagellum concolorous, pale orange to yellow;
ferivora medially-Dltes(P ic. S13) 00. isctes Saceeus sized tneohalene decorata (Kimsey)
- Head, mesosoma and metasoma black, often with coppery or metallic green
highlights; metasomal tergum II without white spot; flagellum bicolored with
medial articles dark brown, apical and basal segments whitish; femora medi-
Ally FeGe grab en. bit ahs hiaes et celucehia senpieents shaun tes bicolorata Kimsey, sp. n.
4 Flagellomere I 3x as long as broad; malar space more than 3.5 midocellus
diameters long; hindocellus separated from eye margin by 0.3-0.5 hindocellar
CAMNCLer CHI. 2) tomers nae pee naie cetaceans kaoriensis Kimsey, sp. n.
= Flagellomere I less than 3x as long as broad; malar space less than 3 midocel-
lus diameters long; hindocellus nearly touching eye margin, by less than 0.3
hindocellar diameter (Fig. 30)... cece neocaledonica Kimsey, sp. n.

Description of a new chrysidid genus from New Caledonia... 23

5 Antenna as long or longer than body; flagellomere I more than 4x as long as
broad: flagellomere Il more than: 3%as long as:broad......c.sescnssecacangaanutes 6
= Antenna shorter than body; flagellomere I less than 3.5x as long as broad;
fagellomerc: | less: thanu2.5xas lone as br oadias taccsiscoserssersdoneaptaraoanceac eu’ 7
6 Head and thoracic dorsum black with metallic blue highlights (Fig. 12); ma-

lar space less than 2.5 midocellus diameters; flagellomere [X less than 5.5x as
lon G asbroad hier 2) vi suit poser Mpoecemaatcenaes kaoriensis Kimsey, sp. n.
— Head and mesosoma metallic blue (Fig. 10); malar space more than 2.5 mi-
docellus diameters long; flagellomere [IX 6-7x as long as broad (Fig. 19).......
adesivoteascetes AGE, sdeevedcveubeatscatarcud Meas Obueiarratsa eonean etedoceaess decorata Kimsey
vs Clypeus and flagellum dark brown to black; body length 2.5-3.0 mm; least
interocular distance more than 0.5x facial length in front view (Fig. 17) ......
ID CR nt i ee en eer Are tet bicolorata Kimsey, sp. n.
= Clypeus and flagellum red; body length 4-5 mm; least interocular distance less
than 0.5x facial length in front view (Fig. 21) .... zeocaledonica Kimsey, sp. n.

. Mandjelia

Pic d’Amoa

Aoupinie®

Plateau-de_.Dogny ‘

Sarramea

Os 229
F Riviere Bleue
e

. @
200 km Me A chute de

Madeleine

Noumea &

Pic du Grand Pic du
Kaori Pin
167°

Figure |. Distribution map of Noumeasega species.

24 Lynn S. Kimsey / Journal of Hymenoptera Research 38: 19-35 (2014)

Noumeasega bicolorata Kimsey, sp. n.

http://zoobank.org/2F 108127-5738-47D2-8C68-GED6B9A05832
http://species-id.net/wiki/Noumeasega_bicolorata

Figures 3, 4, 9, 14, 17, 22, 25, 26

Type material. Holotype male: Pic du Pin, 22°14'S 166°50'E, 280m, 23/xii/2004—
12/1/2005, Malaise trap, Burwell & Wright, #12047 (QM). Paratypes: 1 male: same
data as holotype; 2 males: 25/xi—23/xii/2004, Malaise trap, Burwell & Wright, #1864;
2 males: 22°15'S, 166°49'E, 280m, 23/xii/2003-12/i/2005, Malaise trap, Burwell
& Wright, #12038; 2 males: 25/xi—23/xii/2004, Malaise trap, Burwell & Wright,
#11858; 1 male: 25—26/xi /2004, Malaise trap, Burwell & Wright, #11779; 2 females;
Pic du Grand Kaori, 22°17'S 166°54'E, 250m, 22-23/xi/2004, Burwell & Wright,
YPT, #11760; 1 female: Pic du Grand Kaori, 22°15'S, 166°49'E, 280m, 25/xi/2004—
12/i/2005, Grimbacher & Monteith, RF, #1859; 2 females: Riv. Bleue Panoramic
track, 160m, 22°15'S, 166°49'E, 25/xi/2004—12/i/2005, Burwell & Skevington, FIT,
#9960; 1 male: Foret Nord, 22°19'S, 166°55'E, 480m, 22/xii/2004—9/i/2005, Malaise
trap, Burwell & Wright, #12074; 1 male: 1—22/xii/2004, Malaise trap, Burwell &
Wright, #11882 (BME, QM).

Diagnosis. Females share the banded wings and long spine-like propodeal angles
with decorata. They can be separated by having a black body, with coppery or green
highlights, not bright blue as in decorata and the flagellum is bicolored, not yellow as in
decorata. Males have yellow legs and flagellomere I less than 4x as long as broad, which
are shared with neocaledonica. Males also have a dark spot on the forewing below the
stigma, a feature shared with decorata. They can be distinguished from neocaledonica by
the dark brown to black flagellum and clypeus (red in neocaledonica).

Female description. Body (Fig. 14): length 2.5—3.0 mm. Head: face (Fig. 22);
scapal basin zone of cross-ridging occupying one-third of distance between ocular
margins, three-fourths basin height; frons with punctures large, contiguous; ver-
tex (Fig. 26): lateral postocular extension not extending behind eye, midocellus
2 midocellar diameters from ocular margin; hindocellus 0.4 hindocellar diameter
from ocular margin; malar space 2.4—2.5 midocellar diameters long; subantennal
distance 0.7 midocellar diameter long; scape 4x as long as broad; flagellomere |
2.6—2.8x as long as broad; flagellomere II 0.6x as long as broad; flagellomere IX
1.3-1.5x as long as broad. Mesosoma: pronotum strongly convex in lateral view,
with medial sulcus; pronotal and scutal punctures, large, contiguous, not obscuring
notauli; scutellum with large, deep, contiguous and slightly striatiform punctures;
mesopleural punctures large, contiguous; metanotum with medial ridge or welt;
metapleuron and propodeal side polished, impunctate; propodeal posterior enclo-
sure with medial ridge, with a few irregular cross-ridges. Metasoma: Shiny, impunc-
tate. Color: Head and mesosoma black, propleura and upper mesopleuron brown;
scape brown; pedicel and flagellomeres I-III and IX-XI pale yellow to pale brown;
flagellomeres [V-VIII dark brown; clypeus reddish; coxae whitish to pale brown;
femora orange with whitish apices; tibiae and tarsi orange; tegula whitish; wing dark

Description of a new chrysidid genus from New Caledonia... 25

((- mais / yy i, y, 7. Noumeasega
AE AS decorata, m

Figures 2-7. 2—4 Lateral view of body 5-7 Ventral view of mesopleuron and midcoxae.

brown, with untinted band across wing at apex of Rs vein, medial vein and wing
base, apical margin untinted, with dark stain adjacent to stigma; metasoma reddish
brown; pubescence pale.

26 Lynn S. Kimsey / Journal of Hymenoptera Research 38: 19-35 (2014)

Male description. Body (Fig. 9): length 2.5-3.0 mm. Head: face (Fig. 17) with
scapal basin densely cross-ridged medially, occupying one-third of distance between
eyes and basin height; frons with large, contiguous punctures; vertex (Fig. 25) with
broad lateral postocular extension, 1 midocellus diameter wide or wider, midocellus 2
midocellar diameters from eye margin, hindocellus 0.7—0.8 hindocellar diameter from
eye margin; clypeal apex broadly rounded; malar space 2.3 midocellar diameters long;
subantennal distance 0.8 midocellar diameter long; scape 2.3x as long as broad; flagel-
lomere I 3.2x as long as broad; flagellomere II 2.2x as long as broad; flagellomere IX
2.8x as long as broad; antenna as long as head + mesosoma. Mesosoma: pronotum with
medial sulcus, strongly convex in lateral view; pronotal and scutal punctation contigu-
ous, large, not obscuring notauli; scutellar punctures 0.5 puncture diameters apart; mes-
opleural punctures large, contiguous; metanotum without medial longitudinal ridge or
welt; metapleuron and propodeal side polished, impunctate; propodeal posterior enclo-
sure irregularly cross-ridged, with medial longitudinal ridge. Metasoma: terga evenly
punctate, punctures 1—2 puncture diameters apart. Color: head, including clypeus, and
mesosoma black with metallic blue highlights dorsally; metasoma black, anterior face
of tergum I brown; scape yellowish brown basally, rest of antenna dark brown; wings
evenly light brown tinted; legs yellow, becoming dark brown on tarsi; pubescence pale.

Remarks. ‘This is the second most colorful species, after NV. decorata. Both sexes are
brightly colored, with metallic blue highlights on the mesosoma. ‘This species appears
to be confined to the southeastern end of the island.

Etymology. The name refers to the bright blue and whitish coloration, f

Noumeasega decorata (Kimsey), comb. n.
http://species-id.net/wiki/Noumeasega_decorata
Figures 6, 7, 10, 13, 19, 24, 27, 38

Atoposega decorata Kimsey 1995:590. Holotype female; New Caledonia: Ciu, near Mt.
Canala (MCZ).

Material studied. New Caledonia: 1 female: Sud Prov., 9.1 km nw, Sarraméa; (MCZ);
1 female: Sud Prov., Mt. Khogis, 17 km nne Nouméa, 22°10'34S, 166°30'17E,
28/1/1996, MT, 425m, Irwin, Webb & Schlinger (INHS); 2 females: Sud Prov.,
9.1 km nw, Sarraméa; 22°35'07S, 165°47'24E, 14—15/i/1996, MT, 425m, Irwin,
Webb & Schlinger (BME); 1 male: Mandjelia summit, 750m, 20°24'S 164°32'E,
29/x/2003-31/i1/2004, G. Monteith, FIT, #11486 (QM); 1 male: Chute Madeleline,
230m, macquis, 22°14'S, 166°52'E, 18/ix—12/xi/2000, Malaise trap, Skevington &
Burwell, #9970 (QM); 1 male: Aoupinie, 850m, 21°11'S, 165°18'E, 23/xi/2001-
1/i/2002, Burwell & Monteith, Malaise trap, #8926 (QM); 1 male: Plateau de Dogny,
20/xi/1958, C.R. Joyce (BPBM).

Diagnosis. ‘This is the most brightly colored species of Noumeasega. The bright

blues and purples, with the white metasomal spot in the female will readily distinguish

Description of a new chrysidid genus from New Caledonia... af

8. decorata

9. bicolorata

10. kaoriensis

11. neocaledonica

Figures 8-1 1. Lateral view of male Noumeasega.

decorata from other Noumeasega species. Males can be distinguished by the yellow legs
and antennae, metallic blue head and thorax and antenna as long or longer than the
body. Noumeasega decorata shares the strongly convex pronotum and extensive metallic
coloration with dicolorata. Other shared characters include the banded wings, spine-like
propodeal angle in the females. Males share the unusually long antenna, brown spot
adjacent to forewing stigma, and correspondingly long flagellomeres with kaoriensis.
Female description. Body (Fig. 13): length 5-6 mm. Head: face (Fig. 24 ); scapal
basin coarsely cross-ridged medially, zone of cross-ridging occupying one-third of dis-
tance between eyes, one half of height of scapal basin; frons with punctures contigu-
ous; malar space 2.8 midocellar diameters long; head 0.9x as long as wide; vertex in

28 Lynn S. Kimsey / Journal of Hymenoptera Research 38: 19-35 (2014)

dorsal view (Fig. 28), with narrow lateral postocular extension, less than 0.2 midocellar
diameter wide, midocellus 1.5—1.6 midocellar diameters from ocular margin; hindo-
cellus separated from ocular margin by 0.5 hindocellar diameter; clypeus evenly curved
apically; malar space 2.8 midocellar diameters long; subantennal distance 0.4 mido-
cellar diameter long; scape length 4.3—4.5x breadth; flagellomere I length 3.0-3.3x
breadth; flagellomere II 0.7—0.8x as long as broad; flagellomere [X 1.9-—2.0x as long
as broad; antenna as long as body. Mesosoma: pronotal and scutal punctures coarse,
contiguous, longitudinally ridged, striatiform punctures becoming most pronounced
on scutum; scutum with notauli obscured anteriorly by coarse ridging; mesopleuron
with contiguous, horizontally striatiform punctures; scutellum with large, contigu-
ous but not striatiform punctures; metapleuron and side of propodeum polished and
impunctate; metanotum 1.4x as long as scutellum, medial enclosure with large con-
tiguous punctures, without medial ridge; propodeal dorsal surface coarsely areolate,
posterior surface without medial enclosure, medially polished and impunctate, later-
ally rugose; metapleuron and propodeal side smooth, impunctate. Metasoma: terga
and sterna polished and impunctate. Color: head, including clypeus, and mesosoma
dark metallic blue, except scutum, metanotum and propodeal sides purple; metasoma
black, with blue tints, tergum II with whitish lateral spot; scape and pedicel dark blue;
flagellomere I whitish, remainder of flagellum red; coxae blue; femora blue with base
and apex whitish; fore and midtibiae whitish, with dark brown apex; hindtibia dark
blue; tarsi brown to black; forewing largely dark brown, with untinted band across
wing as base of stigma and apex of Rs and wing tip untinted.

Male description. Body (Fig. 10): length 4.5-5.0 mm. Head: face (Fig. 19);
scapal basin finely cross-ridged medially, zone of cross-ridging occupying one third
of distance between eyes, one half of height of scapal basin; frons with punctures
contiguous; malar space 2.9 midocellar diameters long; scape length 2.3x as long as
broad; vertex with complete lateral postocular extension; flagellomere I 5x as long as
broad; flagellomere II 3.4x as long as broad; flagellomere IX 6.8—7.0 as long as broad;
antenna as long as entire body; vertex in dorsal view (Fig. 27), with narrow lateral
postocular extension, separated by 0.2—0.3 midocellar diameter, midocellus 2.2—2.3
midocellar diameters from eye margin; hindocellus 0.7—0.8 hindocellar diameters
from eye margin; ocular setulae minute; clypeal margin broadly truncate apically;
malar space 2.9—3.0 midocellar diameters long; subantennal distance one midocel-
lar diameter long; scape 2.3x as long as broad; flagellomere I 5x as long as broad;
flagellomere II 2.4x as long as broad; flagellomere IX 6.8—7.0x as long as broad.
Mesosoma: pronotum strongly convex in lateral view; pronotal and scutal punctua-
tion coarse, contiguous; notauli obscured by punctation; scutellum with coarse, con-
tiguous punctuation; metanotum without longitudinal ridge or welt; mesopleuron
with dense, large, contiguous punctures; metapleuron and propodeal side polished,
impunctate, posterior enclosure polished and impunctate, with weak medial longi-
tudinal ridge. Metasoma: punctation even, punctures 1—2 puncture diameters apart.
Color: head, including clypeus, and mesosoma dark metallic blue becoming purplish
on propodeal side; antenna dark brown to black, except scape yellowish basally, api-

Description of a new chrysidid genus from New Caledonia... 29

14. kaoriensis

15. neocaledonica

Figures 12-15. Lateral view of female Noumeasega.

cally with metallic blue highlights; metasoma black with metallic blue highlights,
tergum | anterior brown; legs yellow, becoming darker brown on tarsi; hindfemur
and tibial brown with metallic blue tints; forewing untinted except for brown spot
between stigma and R1 and Rs.

Remarks. Unlike the other species of Noumeasega, decorata males and females have
the mesosoma metallic blue, not black with metallic blue highlights. Additionally, fe-
males have the metasoma metallic blue and the males have metallic blue highlights on
the metasoma. ‘This is also the largest bodied Noumeasega species in both sexes. This is
the most widespread species on the island, found in nearly all sites collected

30 Lynn S. Kimsey / Journal of Hymenoptera Research 38: 19-35 (2014)

Noumeasega kaoriensis Kimsey, sp. n.
http://zoobank.org/65C9IOFEF-65 F6-4B4F-9509-9F38DA71296F
http://species-id.net/wiki/Noumeasega_kaoriensis

Figures: 12; 203231532

Type material. Holotype male; Pic du Grand Kaori, 22°17'S, 166°54'E, 250m, 21/
xi/2001—29/i/2002, G. Monteith, malaise trap, #8920 (QM). Paratypes: 6 males:
same data as holotype; 1 male: 22/xi—22/xii/2004, Burwell & Wright, malaise trap,
#11846; 1 male: 22/xii/2004—12/i/2005, Burwell & Wright, malaise trap, #12020;
1 female: G. Monteith, malaise trap, #12020; 2 males: 21/xii/2004—12/i/2005, Bur-
well & Wright, malaise trap, #12030; 1 female: 21/xi/2001—29/i/2002, G. Monteith,
malaise trap, #8920; 1 female: 22/xi/2004—12/i/2005, G. Monteith, FIT, #11847;
1 male: Chute Madeleine, 230m, 22°14'E, 166°52'S, 18/ix—12/xi/2000, Skevington
& Burwell, #9970; 1 male, 1 female: Foret Nord, 22°19'S, 166°55'E, 480m, 1—22/
xii/2004, Malaise trap, Burwell & Wright, #11882; 2 females: 480m, 22/xii/2004—
9/1/2005, Malaise trap, Burwell & Wright, #12074 (BME, QM).

Diagnosis. Male kaoriensis share the relatively bright coloration, long flagellomere
I and banded wings of decorata. However, N. kaoriensis can be distinguished from
decorata by the smaller body size, 3-4 mm long versus 5—6 mm, the black dorsum with
metallic blue highlights, clypeus red versus blue, and flagellomere IX less than 5.5x
as long as broad. In kaoriensis females the forewing is not banded and the propodeal
angle is short and acute or tooth-like, not spine-like. Closest to neocaledonica, female
kaoriensis can be distinguished from females of that species by flagellomere I 3x as long
as broad, longer malar space and brown legs (yellow in neocaledonica).

Female description. Body (Fig. 15): length 3 mm. Head: face (Fig. 23); scapal
basin cross-ridging half distance between ocular margins, 0.7x basin height; vertex
in dorsal view (Fig. 32), with complete lateral postocular extension, 0.4 midocellar
diameter wide, midocellus 1.4 midocellar diameters from ocular margin; hindocel-
lus 0.5 hindocellar diameter from ocular margin; ocular setulae minute; clypeal apex
truncate, truncation 1.5 midocellar diameters wide; malar space 3.7—3.8 midocel-
lar diameters long; subantennal distance 2 midocellar diameters long; scape 3.3x as
long as broad; flagellomere I 2.6x as long as broad; flagellomere II twice as long as
broad; flagellomere IX 4x as long as broad. Mesosoma: pronotum with medial sulcus;
pronotal and scutal punctation, coarse contiguous, not obscuring notauli; scutellum
with large, contiguous punctures; mesopleural punctures contiguous to 0.5 puncture
diameters apart; metanotum without medial ridge or welt; metapleuron and propo-
deal side smooth impunctate; propodeal posterior enclosure smooth, impunctate,
with medial, longitudinal ridge. Metasoma: highly polished and impunctate. Color:
head, including clypeus and mesosoma black, with coppery highlights, particularly
dorsally and on face; scape, pedicel dark brown, except flagellomere I basally whitish;
legs brown, including coxae; wings brown-tinted; metasoma dark brown.

Male description. Body (Fig. 12): length 3.0-4.0 mm. Head: face (Fig. 20); scapal

basin zone of cross-ridging half facial height, half as wide as interocular distance; least

Description of a new chrysidid genus from New Caledonia... 31

[eo]
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I
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oe
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ris)

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oe

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cas
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200

9 ot
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17. confusa
18. decorata

16. bicolorata

20). neocaledonica

C59
—— 99

24.

neocaledonica

Figures 16-24. Noumeasega. Front view of face. 16—20 Males, with flagellomeres II-IX or II-IX re-
moved 21=24 Females.

interocular distance 0.8x facial length, 0.7x greatest interocular distance; malar space
1.7 midocellat diameters long; subantennal distance 1 midocellar diameter long; vertex
in dorsal view (Fig. 31), with broad, lateral postocular extension, 1.4—1.5 midocellar
diameters wide, midocellus 1.4 midocellar diameters from eye margin, hindocellus 0.6

32 Lynn S. Kimsey / Journal of Hymenoptera Research 38: 19-35 (2014)

hindocellar diameter from ocular margin; scape 2.5x as long as broad; flagellomere
I 4.5x as long as broad; flagellomere II 4x as long as broad; flagellomere IX 4.8x as
long as broad; antenna as long as head + mesosoma. Mesosoma: pronotal and scutal
punctation dense, contiguous, not obscuring notauli; scutellum with dense, nearly
contiguous punctures; mesopleuron with punctures 0.5—1.0 puncture diameters apart;
metanotum without medial ridge or welt; metapleuron and propodeal side polished
and impunctate; propodeum posterior enclosure smooth, impunctate, with medial
longitudinal ridge. Metasoma: terga with deep even punctation, 1—2 puncture diam-
eters apart. Color: head and mesosoma black, with greenish blue highlights dorsally,
clypeus red; scape, pedicel chestnut brown; flagellum black; wings evenly light brown
tinted; legs including coxae yellow; metasoma black, with faint bluish tints dorsally,
anterior face of tergum I chestnut brown to yellowish brown; pubescence pale; ocular
setulae present but minute.

Remarks. ‘This is the smallest of the Noumeasega species. The sexes are associated
based on the darker legs in both, blue to purplish mesosomal highlights, distribution
and collecting times.

Etymology. The name refers to the collection site, Pic du Grand Kaori of the holotype.

Noumeasega neocaledonica Kimsey, sp. n
http://zoobank.org/9B7833E8-5F47- 44EC-AEF2- 286AD825AE87
http://species-id.net/wiki/Noumeasega_neocaledonica

Figures: lil." G6; 21-25, 29,.30

Type material. Holotype male: Pic du Grand Kaori, 22°17'S. 166°54'E, 250m,
21/xi/2001—29/i/2002, G. Monteith, Malaise trap, #8920 (QM). Paratypes: 4 fe-
males: 2 males: same data as holotype; 1 female: 22/xii/2004—12/i/2005, Burwell &
Monteith, Malaise trap, #12020; 1 male: 22/xi/2004—12/xii/2004, Wright & Bur-
well, Malaise trap, #11852; 1 female: Pic d’Amoa, north slope, 20°58'S. 165°17'E,
480m, 15—16/xii/2004, G. Monteith, YPT, #11972; 1 female: Foret Nord, 22°19'S.
166°55'E, 22/xii/2004—9/i/2005, 480m, Burwell & Wright, Malaise trap, #12074
(QM, BME).

Diagnosis. Noumeasega neocaledonica females share a number of features with fe-
male kaoriensis including the unbanded wings and short tooth-like propodeal angles.
They can be distinguished from female kaoriensis by the shorter flagellomere I and
shorter malar space. Males more closely resemble those of bicolorata, with the relatively
short antenna and flagellomere I less than 3.5x as long as broad. ‘They can be distin-
guished from bicolorata males by the red clypeus and flagellum, larger body size and
forewing without dark stain adjacent to stigma.

Female description. Body (Fig. 16): length 4-5 mm. Head: face (Fig. 25) flat-
tened; scapal basin with medial zone of coarse transverse ridges, occupying one-third
of distance between eye margins, two-thirds height of basin; frons with large, con-
tiguous punctures; vertex in dorsal view (Fig. 30), without complete, lateral postocu-

Description of a new chrysidid genus from New Caledonia... a2

a
25. bicolorata, m
oe arse

exe S

poe eee Tae

26. bicolorata, f Cxe
(er 28. decorata, f

29. neocaledonica, m

Cp Y59
3

0. neocaledonica, f ——_—.

32. kaoriensis, f

Figures 25-32. Noumeasega, dorsal view of head a = midocellar eye distance b = hindocellar eye distance
C = postocular distance m = males f = females.

lar extension, midocellus 1.4 midocellar diameters from eye margin, hindocellus 0.2
hindocellar diameter from eye margin; clypeus narrowly truncate apically, truncation
about 1 midocellar diameter wide; malar space 2 midocellar diameters long; subanten-
nal distance 0.7 midocellar diameter long; scape 3.4x as long as wide; flagellomere
I 2.4x as long as broad; flagellomere I 0.8x as long as broad; flagellomere IX twice
as long as broad; least interocular distance 0.3x facial length; least interocular dis-
tance 0.6—0.7x greatest interocular distance. Mesosoma: pronotal and scutal punctures
dense, contiguous, somewhat striatiform; notauli not obscured by punctures; scutellar
punctures dense, contiguous; mesopleuron with large, nearly contiguous punctures;

34 Lynn S. Kimsey / Journal of Hymenoptera Research 38: 19-35 (2014)

metanotum with medial longitudinal ridge or welt; metapleuron and propodeal side
polished and impunctate; propodeal enclosure largely impunctate and polished, with
medial longitudinal carina or welt. Metasoma: terga impunctate and polished. Color:
head and mesosoma black, with coppery highlights dorsally and on face, becoming
greener laterally and on metanotum; clypeus dark reddish brown; metasoma black,
with faint bluish tints dorsally; tergum I anterior face brown; scape and flagellomere |
yellow basally, dark brown apically; pedicel and flagellum dark brown to black; wings
evenly brown tinted; legs yellow including coxae; pubescence pale.

Male description. Body (Fig. 11): length 4-5 mm. Head: face (Fig. 21); face
with medial zone of dense transverse cross-ridging, occupying half of area between
eye margins, half height of basin; vertex in dorsal view (Fig. 29), with narrow lateral
postocular extension, 0.2—0.3 midocellar diameter wide, midocellus 1.7 midocellar di-
ameters from eye margin, hindocellus separated from ocular margin by 0.4 hindocellar
diameter or less; least interocular distance 0.4x facial length; least interocular distance
0.8x greatest interocular distance; clypeal apex broadly, shallowly curved apically; ma-
lar space 2.2 midocellar diameters long; subantennal distance 0.8 midocellar diameter
long; scape 2.4x as long as broad; flagellomere I 2.6x as long as broad; flagellomere II
twice as long as broad; flagellomere [X 2.2x as long as broad; antenna as long as head
+ mesosoma. Mesosoma: pronotal and scutal punctation coarse, contiguous, obscuring
notauli; metanotum with longitudinal, medial ridge or welt; metapleuron and propo-
deal side polished and impunctate; propodeal enclosure mostly polished, impunctate,
with narrow longitudinal sulcus or line. Metasoma: terga and sterna with small punc-
tures 1-2 puncture diameters apart. Color: head, meso- and metasoma black; clypeus
red; metasomal tergum I anterior face brown; scape, pedicel and flagellum orange to
light brown; legs and coxae pale brown to yellow; wing membrane untinted; pubes-
cence pale.

Remarks. The sexes are associated based on the weak metallic coloration and the
lack of a postocular extension in the female and very narrow one in males, an uncom-
mon feature in the genus.

Etymology. The species name refers to the country of origin.

Acknowledgements

This study was made possible by the generous assistance of Chris Burwell and the
Queensland Museum, and Christian Letocart and Christian Mille, Institut Agrono-
mique néo-Calédonien.

References

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Proceedings of the Entomological Society of Washington 97(3): 590-595.

Description of a new chrysidid genus from New Caledonia... 35

Kimsey LS, Bohart RM (1991 (1990)) The Chrysidid Wasps of the World. Oxford University
Press, ix + 652.

Krombein KV (1957) A generic review of the Amiseginae, a group of phasmatid egg parasites, and
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Krombein KV (1983) Biosystematic studies, XI: A monograph of the Amiseginae and Lo-
boscelidiinae. Smithsonian Contributions to Zoology (376): 1-79. doi: 10.5479/
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