JHR 84: 391-403 (2021) ee JOURNAL OF Arevminrdcrascen nu

doi: |0.3897/jhr.84.68627 RESEARCH ARTICLE ) I Tymenopter a
>

https://jhr.pensoft.net ‘The International Society of Hymenopterisss RESEARCH

Review of the genus Toxeuma Walker, 1833
(Hymenoptera, Pteromalidae) from Russia,
with a key to Palaearctic species

Ekaterina V. Tselikh', Natalie Dale-Skey’

I Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia 2. Natural History Museum, London, UK

Corresponding author: Ekaterina V. Tselikh (tselikhk@gmail.com)

Academic editor: Vladimir Gokhman | Received 13 May 2021 | Accepted 11 July 2021 | Published 24 August 2021
http://zoobank. org/60D48 C7A-A3E 1-4E 16-A2C7-1958C742A735

Citation: Tselikh EV, Dale-Skey N (2021) Review of the genus Joxeuwma Walker, 1833 (Hymenoptera, Pteromalidae)
from Russia, with a key to Palaearctic species. In: Proshchalykin MYu, Gokhman VE (Eds) Hymenoptera studies
through space and time: A collection of papers dedicated to the 75" anniversary of Arkady S. Lelej. Journal of
Hymenoptera Research 84: 391-403. https://doi.org/10.3897/jhr.84.68627

Abstract

Species of the genus Toxeuma Walker, 1833 from Russia are reviewed. A new species, Toxeuma leleji
Tselikh, sp. nov., is described from the Russian Far East. Toxeuma fuscicorne Walker, 1833 and T. stylicla-
va (Hedgvist, 1974) are recorded for the first time from Russia; Toxeuma acilius (Walker, 1848) — for the
first time for Western and Eastern Siberia and the European part of Russia; Toxeuma paludum Graham,
1959 — for the first time for Western and Eastern Siberia; 7oxeuma subtruncatum Graham, 1959 — for
the first time for Primorskii Region. An identification key to females of all Palaearctic species of Toxeuma

is provided.

Keywords

Fauna, key, new species, parasitoids, Pteromalinae, taxonomy

Introduction

The pteromalid genus 7oxeuma Walker, 1833 (type species Toxeuma fuscicornis Walker,
1833) belongs to the family Pteromalidae, subfamily Pteromalinae, and is distrib-
uted in the Palaearctic, Nearctic, and Neotropical regions. Up to now it comprised
nineteen species, only six of which (7 acilius (Walker, 1848), 7! discretum Graham,

Copyright EkaterinaV.Tselikh, Natalie Dale-Skey. 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.

392 Ekaterina V. Tselikh & Natalie Dale-Skey / Journal of Hymenoptera Research 84: 391—403 (2021)

1984, 7 fuscicorne Walker, 1833, 1) paludum Graham, 1959, T. styliclava (Hedqvist,
1974), and 7! subtruncatum Graham, 1959) inhabit the Palaearctic Region (Walker
1833, 1848; Graham 1959, 1969, 1984; Hedqvist 1974; Noyes 2019), with three
species (7! acilius, 1) paludum, and T: subtruncatum) recorded from Russia (Tselikh
2014, 2019).

Pour other species, 7’ aciculare Heydon, 1988, 7) aquilonium Heydon, 1988,
. gerra Heydon, 1988, and 7. inopinum Heydon, 1988 are distributed in the Nearctic
Region (Heydon and Grissell 1988; Noyes 2019).

Nine species, 7’ affinis Ashmead, 1901, 7 aphareus (Walker, 1839), T’ faceta
Girault, 1913, 7! ferrugineipes Ashmead, 1901, T’ hawaiiensis Ashmead, 1901, T’ ni-
grocyanea Ashmead, 1901, T’ nubilipennis Ashmead, 1901, T° orobia (Walker, 1842),
and 7! tarsata Ashmead, 1901 are distributed in the Neotropical Region (Walker 1839,
1842; Ashmead 1901; Girault 1913; Noyes 2019).

Including the new species from the eastern Palaearctic Region described in this
paper, the genus 7oxeuma now consists of twenty valid species.

The aim of this work is to describe a new species of 7oxeuma from Russian Far East
and to give new records of two Palaearctic species of Zoxeuma from Russia. An identi-
fication key to all Palaearctic species of Toxeuma is also provided.

Material and methods

The material used in this review is deposited in the Hymenoptera collections of the Zo-
ological Institute of the Russian Academy of Sciences, St. Petersburg, Russia (ZISP),
Natural History Museum, London, United Kingdom (NHMUK) and Oxford Univer-
sity Museum of Natural History, Oxford, United Kingdom (OUMNH).

Morphological terminology, including sculpture and wing venation nomenclature,
follows Boucek and Rasplus (1991) and Gibson (1997). ‘The flagellum consists of two
anelli, the funiculus (composed of six funicular segments), and the clava of three seg-
ments. The following abbreviations are used: POL — posterior ocellar line, the mini-
mum distance between the posterior ocelli; OOL — ocello-ocular line, the minimum
distance between a posterior ocellus and compound eye; M — marginal vein; S — stig-
mal vein; P — postmarginal vein; FI-F6 — funicular segments; Mt2—Mt8 — metasomal
tergites (Mtl — petiole).

The scape is measured without the radicle; the pedicel is measured in lateral view.
The distance between the clypeal margin and the toruli is measured from the lower
margins of the toruli. Eye height measured as the maximum diameter, eye length as
the minimum diameter. The mesosoma and metasoma are measured in lateral view, the
latter including the ovipositor sheaths.

Observations were made using MC-2 ZOOM and Leica MZ16 stereomicroscopes,
and images were acquired using a combination of Olympus SZX 10 stereomicroscope
and a digital camera EOS 70D, Micromed 3 microscope and a digital camera Toup-
Cam UCMOS 5.1MP (ZISP specimens); a Canon 5DsR camera + Mitutoyo 10x

Review of the genus Toxeuma Walker, 1833 (Hymenoptera, Pteromalidae) 295

lens or Canon MPE ultra macro lens (65 mm), Canon MT-24ex flash and Cognysis
Stachshot, and Helicon remote software (NHMUK specimens); a Leica M165C mi-
croscope, Leica 10450028 planapo 1x objective lens and Leica DFC 490 digital cam-
era, and Leica Application Suite v.4.12.0 (QUMNH specimen). The acquired images

were then processed with Helicon Focus.

Taxonomy

Toxeuma Walker, 1833.

Type species: Toxeuma fuscicornis Walker, 1833, by subsequent designation of West-
wood (1839: 68).

Cirdania Hedqvist, 1974: 145. Type species: Cirdania styliclava Hedqvist, 1974, by
original designation. Synonymy by Bouéek (1991: 205).

Diagnosis. Clypeal margin entire, truncate or slightly arched; antennal clava with or
without short or long spicula; antennal formula 11263; pronotum with collar margin
carinate; notauli complete; prepectus reticulate, without carinae; sculpture of propode-
um at least partly irregular, petiole from transverse to slightly elongate; fore wing with
slender M, metasoma ovate or lanceolate (Graham 1959; Hedqvist 1974; Heydon and
Grissell 1988; Boucek and Rasplus 1991).

Distribution. Palaearctic, Nearctic and Neotropics.

Comments. Unfortunately, the biology of most Toxeuma species is unknown. ‘The
only biological records exist for 7’ fuscicorne, which was reared from the primary host
Agromyza schineri Giraud, 1861 (Diptera, Agromyzidae) (Boucek 1977), and for 7
paludum, reared from the primary host Coleophora sp. (Lepidoptera, Coleophoridae)
(Askew 1968).

The genus can be distinguished from other Pteromalidae genera using the keys of
Graham (1969) and Boucéek and Rasplus (1991).

In this genus, the antennal clava can have three variations: acute (Fig. 24), with a
spicula (e.g., Figs 4, 17, 27, 30) or without spicula and rounded apically (e.g., Figs 13,
35). This is an important feature to identify species of this genus. Unfortunately, in
the original descriptions of T’ acilius (Walker, 1848) and T’ paludum (Graham, 1959)
as well as in previously published keys (Graham 1959, 1969) this feature was neither
mentioned nor shown on the figures. However, after studying the types and addition-
al material, the presence of a spicula was found in almost all individuals of these spe-
cies. Interestingly, 7’ paludum Graham is characterized by variation of antennal clava
from acute (Fig. 24) to that with very short and straight spicula (e.g., Figs 23, 27).

The discovery of a previously undescribed spicula in some Palaearctic species sug-
gests that some members of Toxeuma from Nearctic Region described by Heydon and
Grissell (1988) might be synonyms of the Palaearctic species, but additional research is
needed to confirm this assumption.

394 Ekaterina V. Tselikh & Natalie Dale-Skey / Journal of Hymenoptera Research 84: 391—403 (2021)

Key to Palaearctic species of Joxeuma Walker based on females

1

Antennal clava with spicula (e.g., Figs 4, 17, 27, 30) or distinctly acute api-
CAN ATTRA oat athe: end sanded tet ae ohne chiara Shae ULM uae dump ith is phamctaes edb taa PLAS 2
Antennal clava without spicula and rounded apically (e.g., Figs 13, 35)...... 5
Antennal clava with long spicula (Fig. 30). Petiole with reticulate sculpture (dor-
sal view), 1.4—1.8 times as long as broad (Fig. 32)....... T. styliclava (Hedqvist)
Antennal clava acute (Fig. 24) or with short spicula (e.g., Figs 4, 17, 27).
Petiole with irregular sculpture (dorsal view), 0.7—1.25 times as long as broad
(ters MP1g8: Oy IIe Orn bt sate Suh eS tacihassch a scedae her aa Seanad heat Bae lca ace heute Mees 3
Mt2 0.85-0.9 times median length of metasoma (Fig. 18). Metasoma 0.4—
0.45 times as long as mesosoma and head together (Fig. 15). Sculptured part
of petiole 1.17—1.25 times as long as broad (Fig. 19). Propodeum medially as
Te ir@- a6 Sotaite Mais A ae ese tactunlaadone aedoteseatsne te hasan RNa sida dtl T. leleji sp. nov.
Mt2 0.5—0.6 times median length of metasoma (e.g., Figs 25). Metasoma
0.6—0.7 times as long as mesosoma and head together (e.g., Figs 2, 22).
Sculptured part of petiole 0.75—1.0 times as long as broad (e.g., Figs 6, 26).
Propodeummedially-shorrer Chan -scute Ueto. rcobanecooxtavessseecusenecc at <
All legs with femora and tibia metallic blue-green (Fig. 22). Antennal clava
acute (Fig. 24) or with very short and straight spicula (e.g., Figs 23, 27). Head
and mesosoma metallic: blie-greeni...s.sshaeccapbeniccestendess T. paludum Graham
All legs with femora and tibia reddish or testaceous (Fig. 2). Spicula of anten-
nal clava longer and curved (e.g., Figs 3, 4, 5). Head and mesosoma bright
Dice lnete esiuhn Me sensual ee Os ASAI costes eds AE vaso NS RATT T. acilius (Walker)
Mt2—Mt8 smooth and shiny (Fig. 37). Metasoma ovate, shorter than meso-
soma (Fig. 33). Petiole 1.25—1.55 times as long as broad (Fig. 38) ...........005
RE a Ee ee ate a SD nah T. subtruncatum Graham
Mt2—Mt8 alutaceous (e.g., Figs 7, 11). Metasoma lanceolate, longer than mes-
osoma (e.g., Figs 9, 10). Petiole 0.5—0.7 times as long as broad (Fig. 12) ...... 6
Mt8 1.5—1.7 times as long as broad (Fig. 11). Metasoma 1.05—1.2 times as
long as mesosoma and head together (Fig. 10) ............. T. fuscicorne Walker
Mt8 up to 1.15 times as long as broad (Fig. 7). Metasoma shorter than meso-
somaand Nead:topether sei7 cs cassarlaed csenettoncheataaata. T. discretum Graham

Toxeuma acilius (Walker, 1848)

Figs 1-6

Lamprotatus acilius Walker, 1848: 169. Lectotype male, (NHMUK, examined) desig-

nated by Graham 1959: 104.

Toxeuma acilius (Walker, 1848) new combination in Graham, 1959: 104.

Material examined. Lectotype male (NHMUK): Unrrep Kinepom: “LECTOTYPE”,
“Type”, “England”, “Lamprotatus Acilius Walker 3 / Stood under this name in old B.M.

Review of the genus 7Joxeuma Walker, 1833 (Hymenoptera, Pteromalidae) bss)

Coll. C. Waterhouse”, “Acilius,”, “7oxeuma ericae (Delucchi)”, “Toxeuma acilius (Walk.)
det. M.W.R. de V. Graham”, “B.M. TYPE HYM. 5.1928”, “NHMUK 013456778”.
Other material: UNiTED Kincpom: England, 1 female, Berkshire, Wytham Wood,
3.V1I.1954, coll. M.W. Graham. Russia: Bryansk Prov., 2 females, 15 km E Pochep
Town, Uruch’e Vill., 52°55.00"N, 33°57.50"E, 20.VIII.2020, coll. O. Kosheleva and
E. Tselikh; Kamchatka Reg., 1 female, 80 km S Lazo Vill., Kronotsky Reserve, Ipuin,
19.VII.2013, coll. D. Rachin and E. Tselikh; Sakhalinskaya Prov., 1 female, Kunashir
Island, Dubovoe Vill., 22. VII.1973, coll. D. Kasparyan; 1 female, Mendeleevo Vill.,
3.VIII.2011, coll. D. Rachin and E. Tselikh; Smolensk Prov., 1 female, Smolensk,
54°49.103"N, 32°5.09"E, 23.VII.2020, coll. O.V. Kosheleva); Tyumen’ Prov., 1
female, 2 km SW Tyumen’, Bereznyakovsky Vill., 3. VII.2018, coll. Tselikh.

Distribution. Czech Republic, Germany, Netherlands, Romania, Russia (Rus-
sian Far East; Western and Eastern Siberia, European part of Russia — new records),
Sweden, United Kingdom (Walker 1848; Graham 1959; Tselikh 2014, 2019;
Noyes 2019).

Toxeuma discretum Graham, 1984
Figs 7—9

Toxeuma discretum Graham, 1984: 501. Holotype female (NHMUK, examined).

Material examined. Holotype female (NHMUK): Unirep Kincpom: “Holotype”,
“England: Oxon Bald Hill, nr. Lewknor, 18.6.1958”, “Toxeuma discretum sp.n. HOL-
OTYPE & M. de V. Graham det. 1983”, “B.M. TYPE HYM 5.3020”, “NHMUK
013456774”.

Distribution. Belgium, France, Sweden, United Kingdom (Graham 1984;
Noyes 2019).

Toxeuma fuscicorne Walker, 1833
Figs 10-14

Toxeuma fuscicornis Walker, 1833: 378; lectotype female (NHMUK, not examined)
designated by Graham (1969: 147).

Miscogaster lugubris Walker, 1833: 462. Type specimens possibly lost (Graham 1969:
147). Synonymy by Walker (1846: 28) under Toxeuma ericae Walker, 1833.

Toxeuma ericae Walker, 1833: 379; lectotype female (NHMUK, not examined) desig-
nated by Graham (1969: 147). Synonymy by Graham (1959: 101).

Gastrancistrus accia Walker, 1848: 156; lectotype female, (NHMUK, not examined)
designated by Graham (1969: 147). Synonymy by Graham (1959: 101).

Material examined. Other material: Russia: Belgorod Prov., 12 females, 3 males,
Borisovka Vill., “Belogor’e” Reserve, “Les na Vorskle”, 11.V1.2018, coll. Tselikh.

396 Ekaterina V. Tselikh & Natalie Dale-Skey / Journal of Hymenoptera Research 84: 391—403 (2021)

Figures 1-9. Zoxeuma acilius holotype male (1) non-type female (2-6) | body, dorsal view 2 body,

dorso-lateral view 3 antenna (dry material) 4 F6 and antennal clava (slide) 5 antenna (slide) 6 propodeum
and petiole, dorsal view Toxeuma discretum holotype female (7-9) 7 metasoma, dorsal view 8 body, dorsal

view 9 body, lateral view Scale bars: 1.0 mm.

Review of the genus TYoxeuma Walker, 1833 (Hymenoptera, Pteromalidae) D9 7

Distribution. Belgium, Croatia, Czech Republic, France, Germany, Hungary,
Iran, Netherlands, Romania, Russia (new record), Spain, Sweden, Switzerland, United
Kingdom (Walker 1833; Graham 1959, 1969; Noyes 2019).

Biology. Primary parasitoid of Agromyza schineri Giraud, 1861 (Diptera, Agro-
myzidae) — Bouéek (1977).

Toxeuma leleji Tselikh, sp. nov.
http://zoobank.org/220F64CB-8C8C-4AD4-AFC7-F8FA0708 1 ECF
Figs 15-21

Comparison. Joxeuma leleji is similar to 1’ acilius (Walker) and 7’ paludum Graham;
the differences between these species are given in the key.

Females of Toxeuma leleji are also similar to those of the Nearctic species Toxeuma
inopinum Heydon because they have an antennal clava with needle-like spicula, F1—F4
elongate, fore wing with pilose basal vein, but Zoxeuma leleji females have the gena not
distinctly hollowed at mouth corner, petiole longer than wide, Mt2 0.85—0.9 times
median length of metasoma.

Description. Female. Body length 1.5 mm. Fore wing length 1.5 mm.

Head, mesosoma and metasoma, metallic bluish-green with diffuse coppery lustre; an-
tenna with scape yellow, pedicel yellowish-brown, flagellum brown; all coxae metallic blu-
ish-green with diffuse coppery lustre; all femora, tibiae and tarsi yellow except last segment
yellowish-brown; fore wing hyaline, venation yellowish-brown; ovipositor sheath black.

Head in dorsal view 1.93—2.07 times as broad as long and 1.36—1.38 times as
broad as mesoscutum; in frontal view 1.28—1.3 times broader than high. POL 1.46-
1.57 times OOL. Eye height 1.21—-1.26 times eye length and 2.90—2.92 times as
long as malar space. Distance between antennal toruli and lower margin of clypeus
0.75 times distance between antennal toruli and median ocellus. Clypeus alutaceous,
its lower margin slightly arched. Antenna with scape 0.92—0.96 times as long as eye
height and 1.12—1.22 times as long as eye length; pedicel 1.61—1.66 times as long as
broad and 1.40—1.42 times as long as F1; combined length of pedicel and flagellum
1.10—1.14 times breadth of head; flagellum almost filiform; F1—F3 longer than broad,
F4—F5 subquadrate, F6 transverse (on dry material) and F1 longer than broad, F2—F3
subquadrate, F4—F6 transverse (on slide); clava 2.83—2.86 times as long as broad (on
dry material) and 2.58 times (on slide).

Mesosoma 2.20—2.45 times as long as broad. Scutellum finely reticulate, 1.0—1.1
times as long as broad. Propodeum medially as long as scutellum; median carina and pli-
cae present; sculpture reticulate with irregular rugae; nucha short and weakly reticulate.
Sculptured part of petiole 1.17—1.25 times as long as broad, with irregular sculpture.
Fore wing 2.34—2.89 times as long as maximum width; basal cell bare; basal vein pilose;
speculum partly open; M 1.16—1.22 times as long as P and 1.95—2.00 times as long as S.

Metasoma ovate, 1.50—1.64 times as long as broad and 0.40-—0.45 times as long
as mesosoma and head together; Mt2 0.85—0.90 times median length of metasoma.
Ovipositor sheath projecting slightly beyond apex of metasoma.

398 Ekaterina V. Tselikh & Natalie Dale-Skey / Journal of Hymenoptera Research 84: 391—403 (2021)

Figures 10-21. Zoxeuma fuscicorne non-type female (10-14) 10 body, lateral view 1 1 metasoma, dorsal
view 12 scutellum, propodeum and petiole, dorsal view 13 F6 and antennal clava (slide) 14 antenna
(slide) Toxeuma leleji sp. nov. holotype female (15, 16, 18=20) paratype female (17, 21) 15 body, lateral
view 16 fore and hind wings 17 antennal clava (slide) 18 metasoma, dorsal view 19 propodeum and

petiole, dorsal view 20 head, frontal view 21 antenna (slide) Scale bars: 1.0 mm.

Review of the genus 7Joxeuma Walker, 1833 (Hymenoptera, Pteromalidae) 299

Etymology. ‘The species is named in honour of the prominent entomologist, an
expert on Mutillidae (Hymenoptera), Prof. Arkady S. Lelej.

Material examined. Holotype female (ZISP): Russia: Sakhalin Prov., Kunashir
Island, Golovnina Volcano, 27.VII.1981, coll. E. Sugonyaev.

Paratype female (ZISP): same data as holotype.

Distribution. Russian Far East (Sakhalinskaya Prov.).

Toxeuma paludum Graham, 1959
Figs 22—27

Toxeuma paludum Graham, 1959: 102. Holotype female (OQUMNH, examined),
paratypes (NHMUK, examined).

Material examined. Holotype female (OQUMNH): “Otmoor OX. MWG. (1)
6.7.1956”, “Toxeuma paludum TYPE 9”, “Toxeuma paludum sp.n. M. de V. Graham
det. 1957 HOLOTYPE [female symbol]”, “TYPE HYM: 1219 Toxeuma paludum
GRAHAM HOPE DEPT. OXFORD”. Paratype female (NHMUK): Unirep Kinc-
pom: “PARATYPE”, “OXON. Otmoor. (3) 10.7.1956 M. de V. Graham”, “Toxeuma
paludum Paratype sp.n. M. de V. Graham’, “NHMUK 013456775”. Other mate-
rial: Russia: Irkutsk Prov., 6 females, 3 males, Sludyanka Vill., “Shamansky Cape”,
05.VIHI.2019, coll. E. Tselikh; Kamchatka Terr., 6 females, 3 males, 80 km S Lazo
Vill, Kronotsky Reserve, Ipuin, 55°06.969'N, 159°57.952'E, 18.VII.2013, coll. D.
Rachin and E. Tselikh; Sakhalinskaya Prov., 1 female, Iturup Island, Goryachie
Kluchi Vill., 30.VH.2002, coll. A. Lelej; 1 female, Kunashir Island, Mendeleevo
Vill., 3. VIII.2011, coll. D. Rachin and E. Tselikh; 4 females, 3 males, Dubovoe Vill.,
49°46.479'N, 145°29.721'E, 21.VII.2011, coll. D. Rachin and E. Tselikh; 8 females,
3 males, Sakhalin Island, Sokol Vill., 4.VIII.2011, coll. D. Rachin and E. Tselikh; 1
female, Shikotan Island, Gorobets Bay, 18.VIII.1998, coll. A. Lelej; Tyumen’ Prov.,
2 females, 5 males, 35 km NW Tyumen’ Sity, Salairka Vill., 5.VH.2018, coll. Tselikh;
5 km N Tyumen’ Sity, Lipovoe Lake, 7.VII.2018, coll. Tselikh.

Distribution. Russia (Russian Far East; Western and Eastern Siberia — new re-
cords), Sweden, United Kingdom (Graham 1959; Tselikh 2014, 2019; Noyes 2019).

Biology. Primary parasitoid of Coleophora sp. (Lepidoptera, Coleophoridae)
(Askew 1968).

Toxeuma styliclava (Hedqvist, 1974)
Figs 28-32

Cirdania styliclava Hedqvist, 1974: 145-146. Holotype female (NHRS, not examined).

Toxeuma styliclava (Hedqvist, 1974) new combination in Bouéek (1991: 205).

Toxeuma mucronatum Graham, 1984: 501-502. Holotype female (NHMUK, not
examined). Synonymy by Bouéek, 1991: 205.

400 Ekaterina V. Tselikh & Natalie Dale-Skey / Journal of Hymenoptera Research 84: 391-403 (2021)

Material examined. Paratype female (NHMUK): Swepen: “Sk. Sandhammaren 24/7
1973 leg. K. J. Hedqvist”, “PARATYPUS Cirdania gen.n. styliclava sp.n. 2° K-J Hedqvist
det. 1973”, “Hedqvist coll. BMNH(E) 2011-27”, “NHMUK 013456781”. Other mate-
rial; Russia: Primorskii Reg., 1 female, Lazovsky Reserve, “Korpad”, 10-14. VIII.2010,

26) 22 body, lateral view 23 antenna (dry material) 24 antenna (dry material) 25 metasoma, dorsal view

26 scutellum, propodeum and petiole, dorsal view 27 F6 and antennal clava (slide) Toxeuma styliclava para-
type female (28, 29) non-type female (30-32) 28 antenna (dry material) 29 body, lateral view 30 F6 and

antennal clava (slide) 31 metasoma, dorsal view 32 propodeum and petiole, dorsal view Scale bars: 1.0 mm.

Review of the genus 7oxeuma Walker, 1833 (Hymenoptera, Pteromalidae) 401

coll. D. Rachin and E. Tselikh; 1 female, Ussuriysky Reserve, 3.VIII.1961, coll. V. Trjapit-
zin; Sakhalinskaya Prov., 1 female, Kunashir Island, Stolbchaty Cape, 3.VIII.2011, coll.
D. Rachin and E. Tselikh; 1 female, Sernovodsk Vill., 22.VII.1981, coll. E. Sugonyaev;
1 female, Tret’yakovo Vill., 29-30.VII.2011, coll. D. Rachin and E. Tselikh; 1 female,
Sakhalin Island, Sokol Vill., 4.VIII.2011, coll. D. Rachin and E. Tselikh.

Distribution. Belgium, France, Russia (Russian Far East — new record), Sweden

(Hedqvist 1974; Noyes 2019).

Toxeuma subtruncatum Graham, 1959
Figs 33-38

Toxeuma subtruncatum Graham, 1959: 105. Holotype male (OUMNH, not examined).

Material examined. Paratype female (NHMUK): Unirep Kincpom: “ENGLAND:
Warw Ufton Wood 15.vi.1957”, “M.W.R. de V. Graham coll. BMNH(E) 1995-
489”, “Toxeuma subtruncatum Paratype 2°”, “PARATYPE”, “NHMUK 013456776”;
paratype male (NHMUK): “Wytham Wood BERKS. (2) 16.5.1951 M.W. Graham’,
“Toxeuma subtruncatum M. de V. G. sp.n”, “NHMUK 010749000”. Other material:

Figures 33-38. Zoxeuma subtruncatum paratype female (33, 34) paratype male (36) non-type female
(35, 37, 38) 33 body, lateral view 34 antenna (dry material) 35 antennal clava (slide) 36 body, lateral

view 37 metasoma, dorsal view 38 propodeum and petiole, dorsal view Scale bars: 1.0 mm.

402 Ekaterina V. Tselikh & Natalie Dale-Skey / Journal of Hymenoptera Research 84: 391-403 (2021)

UniTeD Kinepom: “Wytham Wood BERKS 11.6.1951 M.W. Graham”, “Toxeuma
subtruncatum Graham’, “NHMUK 013456773”; Russta: Primorskii Reg., 1 female,
Ussuriysky Reserve, 30.VII.1975, coll. N. Storozheva; Sakhalinskaya Prov., 1 female,
Kunashir Island, Dubovoe Vill., 31.VHI.1973, coll. D. Kasparyan.

Distribution. Belgium, Czech Republic, Netherlands, Russia (Russian Far East;
including Primorskii Reg. — new record), Sweden, United Kingdom (Graham 1959;
Tselikh 2014, 2019; Noyes 2019).

Acknowledgements

The authors are very thankful to Dr James Hogan (OUMNH) for checking and imag-
ing the holotype of 7’ paludum for this study, and grateful to employees of the Nature
Reserves “Belogor’e” and “Kronotsky” for their help in organizing scientific research on
the territories of these Reserves.

This work was partly supported by grants from the Russian Foundation for Ba-
sic Research (project No. 19-04-00027) and the Russian state research project No.

AAAA-A19-119020690101-6.

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