ore

JHR 38: 141-153 (2014) JOURNAL OF | *0eerviewed opevarcetsjoural
doi: 10.3897/JHR.38.7572 (ME Hymenopter a

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

Lasioglossum (Acanthalictus) dybowskii (Hymenoptera,
Halictidae) newly recorded from South Korea, with a
checklist of the genus Lasioglossum in Korean Peninsula

Ryuki Murao', Heung-Sik Lee’, Osamu Tadauchi'

| Department of Biological Sciences, Faculty of Sciences, Kyushu University, Fukuoka, 812-8581 Japan 2. Animal
and Plant Quarantine Agency, 8 Jungang daero 30-gil, Junggu, Busan Metropolitan City, Korea 600-016

Corresponding author: Rywki Murao (t.murao@mbr.nifty.com; murao.ryuki.969@m.kyushu-u.ac.jp)

Academic editor: S. Schmidt | Received 22 March 2014 | Accepted 24 April 2014 | Published 12 June 2014
http://zoobank.org/6057F539-C5 EF-4BCD-862C-2AF0AB4516BB

Citation: Murao R, Lee H-S, Tadauchi O (2014) Lasioglossum (Acanthalictus) dybowskii (Hymenoptera, Halictidae) newly
recorded from South Korea, with a checklist of the genus Lasioglossum in Korean Peninsula. Journal of Hymenoptera

Research 38: 141-153. doi: 10.3897/JHR.38.7572

Abstract

Lasioglossum (Acanthalictus) dybowskii is recorded from South Korea for the first time. The species is re-
described, and drawings and photographs of taxonomically important characters are added. Bionomical
data such as flight and flower records and habitat are reported. A checklist of the genus Lasioglossum in the

Korean Peninsula is presented.

Keywords

Hymenoptera, Halictidae, Lasioglossum, Acanthalictus, Korean Peninsula, checklist

Introduction

The halictine bee subgenus Acanthalictus Cockerell of the genus Lasioglossum Curtis
(Halictidae, Halictinae) is a monotypic group and is known only from the Far East
Asia (Michener 2007). It is also placed in the Hemihalictus series (weak-veined Lasio-
glossum) because of the weak second submarginal vein of the female fore wing. Ac-
cording to recent phylogenetic analyses based on molecular data, this informal group
is monophyletic (Danforth et al. 2003; Gibbs et al. 2012). However, the systematics

Copyright Ryuki Murao et al. 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.

142 Ryuki Murao et al. / Journal of Hymenoptera Research 38: 141-153 (2014)

in Hemihalictus series are not clear, due to lack of adequate study on the phylogenetic
relationships and definition of each included subgenus.

First author, Murao, had the opportunity to examine specimens of Acanthalictus
collected in Eastern Asia. In the course of his examination, he found L. dybowskii from
South Korea, never before recorded from that area. In this paper, we report the new
locality data of L. dybowskii in the Korean Peninsula, provide a redescription and some
bionomical notes for the future reconstruction of systematic and phylogenetic analysis.
We also give a checklist of Korean Lasioglossum that will be useful in promoting the
study of Korean halictine bee fauna.

Material and methods

This study is based on the specimens deposited in the Entomological Laboratory, Fac-
ulty of Agriculture, Kyushu University, Fukuoka, Japan (ELKU), the late Dr. Shoichi
F, Sakagami’s collection deposited in the Museum of Nature and Human Activities,
Hyogo, Japan (MNHAH), the Plant Quarantine Technology Center, Suwon, South
Korea (QIA), and the first author’s private collection (without abbreviation). Terminol-
ogy used in the description follows Murao and Tadauchi (2007), partly Sakagami and
Tadauchi (1995), and Gibbs (2010). Abbreviations used in the text are as follows: BL
= body length; WL = wing length; HL = head length; HW = head width; IOD = in-
terocellar distance; OOD = ocellocular distance; OCD = ocelloccipital distance; VOD
= upper interorbital distance; MOD = maximum interorbital distance; LOD = lower
interorbital distance; IAD = interantennal distance; AOD = antennocular distance; CAL
= clypealveolar distance; CPL = clypeal length; EL = eye length; EW = eye width; GW
= genal width; SPL= scape length; Fn = nth antennal flagellomere; FnL = length of nth
flagellomere; FnW = width of nth flagellomere; MsW = mesosomal width; SCL = mes-
oscutellar length; MNL = metanotal length; MPL = metapostnotal length; MtW = meta-
somal width; Tn = nth metasomal tergum; Sn = nth metasomal sternum; IS = interspace
between punctures (e.g., IS 0.5d means 2 of the diameter of a puncture); PP= punctures.
Body measurements are given in ranges followed by the average and standard deviation.

Taxonomy

The subgenus Acanthalictus Cockerell, 1924

Acanthalictus Cockerell, 1924: 184. Type species: Halictus dybowskii Radoszkowski,
1876, by original designation.
Evylaeus (Acanthalictus): Pesenko 2007a: 16-17.

Diagnosis. This subgenus is characterized in having the following features: 1) lower
margin of clypeus reflected forward (Fig. 5); 2) female mandible with two apical teeth
(Fig. 6); 3) basal elevation of male labrum high swelled, with longitudinal furrow

Lasioglossum (Acanthalictus) dybowskii (Hymenoptera, Halictidae) newly recorded... 143

(Fig. 8); 4) male S2 gently swelled on apical part (Fig. 15); and 5) male S6 expanded
apically as in Fig. 20 (Michener 2007; Pesenko 2007a). In this study, we noticed an
additional apparently unique character, namely the female labrum lacking basal eleva-
tion (Fig. 7). The comparative morphological study of labrum has not been performed
yet in the genus Lasioglossum, but this character state may be an autoapomorphy.

Lasioglossum (Acanthalictus) dybowskii (Radoszkowski, 1876)
http://species-id.net/wiki/Lasioglossum_dybowskii
Figs 1-17, 19-25

Halictus dybowskii Radoszkowski, 1876: 110 [Lectotype: Institute of Systematic and Experi-
mental Zoology, Polish Academy of Sciences, Krakow, Poland; 2, Amur (Khabarovsk
Terr., Russia designated by Pesenko 2007b: 107),]; Cockerell 1924: 582 [S].

Halictus griseipennis Cockerell, 1924: 185 [Holotype: U. S. National Museum of
Natural History, Smithsonian Institution, Washington, D.C., USA; 9, Kongaus
(Primorsky Terr., Anisimovka,), Russia]. Synonymy by Ebmer (1978a).

Evylaeus (Acanthalictus) dybowskii: Pesenko 2007b: 91 [in key], 107 [lectotype designated].

Lasioglossum (Evylaeus) dybowskii: Ebmer 1978a: 209, 211; Ebmer 1996: 284-285;
Ebmer 2006: 568.

Specimens examined. [NORTH KOREA] Gangwon-do: 1 9, Mt. Kongésan (= Mt.
Kumgangsan), 8. ix. 1931 (C. Takeya, ELKU, illustrated in Fig. 6). [SOUTH KO-
REA] Gangwon-do: 2 9, Mt. Gariwangsan, alt. 1100m, Jeongseon-gun, N37°27'15",
E128°1'10", 10. vi. 2013 (O. Tadauchi leg., ELKU); Mt. Gariwangsan, Jeongseon-
eun, 3 Q, 30. vii. 2013 (HS. Lee, QIA), 2 9 1 3, 30. vii. 2013 (R. Murao, 1 @ il-
lustrated in Figs 11, 13, 1 Q in Figs 1, 3, 9-10, 12-19, 1 S in Figs 2, 4-5, 14-16,
20, 22-25); 1 9, Mt. Odaesan, alt. 900m, N37°47'0", E128°32'19", 9. vi. 2013
(O. Tadauchi, ELKU); 2 9, Jingogae, Mt. Odaesan, 27. vii. 2001 (HS. Lee, QIA);
BougMyong-ri, DongSan-myon, ChunChon-gun, | 9, 26. iv. 1992 (O. Tadauchi,
ELKU), 1 9, 22. v. 1992 (O. Tadauchi, ELKU, illustrated in Fig. 7); 5 9, Hwangiri,
Seo-myeon, Yangyang-gun, N37°56'25.8", E128°31'19.7", 29. iv. 2007 (HS. Lee,
QIA); 2 2, Sangwonsa Temple, Mt. Chiaksan, Seongnam-ri, Sinlim-myeon, Won-
ju, 26. v. 2009 (HS. Lee, QIA). Gyeonggi-do: 3 2, KwangNung, Pochon-gun, 18.
v. 1992 (O. Tadauchi, ELKU). [CHINA] 1 <4, Mandschurei, Gaolinzsa, 10-14. ix.
1953 (V. Alin, MNHAH,, illustrated in Figs 8, 21).

Distribution. Russian Far East, northeastern China, Korean Peninsula (north,
south= new record).

Published records for Korean Peninsula. North Korea: Ebmer (1996).

Flight period. Female: April to September. Male: July to September.

Flower records. This species visited the following 9 species in 7 families listed as
follows. Apiaceae: Angelica anomala. Asteraceae: Cirsium japonicum, Taraxacum sp.
Brassicaceae: Sisymbrium luteum. Caprifoliaceae: Viburnum erosum. Fabaceae: Lespe-
deza sp. Oleaceae: Ligustrum japonicum. Rosaceae: Crataegus sp., Neillia incise.

144 Ryuki Murao et al. / Journal of Hymenoptera Research 38: 141-153 (2014)

Figures 1-6. Lasioglossum (Acanthalictus) dybowskii (Radoszkowski). 1=2 lateral habitus 3—4 head in
frontal view 5 clypeus in lateral view 6 teeth of mandible. 1, 3, 6 female; 2, 4, 5 male.

Habitat in South Korea. One of the collecting sites (Mt. Gariwangsan) for this
species is shown in Fig. 18. This site is mountain covered by both broad-leaved and co-
niferous forests. This species was collected on the flower of Angelica anomala (Fig. 17)
at the forest edge.

Lasioglossum (Acanthalictus) dybowskii (Hymenoptera, Halictidae) newly recorded... 145

Redescription. Female. Coloration. Body black except for the following parts:
flagellum dark brown or brown ventrally; tegula blackish brown, translucent; tibial
spur yellow; wings transparent and dim, veins and stigma brown or blackish brown.

Pubescence. Body seta whitish to pale yellowish. Head with sparse erect setae.
Mesosoma with sparse elect fine branched setae, and pronotum with thin tomentum
marginally; hind trochanter to tibia with dense plumose or fine branched setae, form-
ing scopa. Tl basally with sparse erect setae. T2—T3 basolateral with thin whitish ap-
pressed setae, forming basal setal bands. Discs of T2—T4 with sparse, short setae. Discs
on S2—S5 with sparse semi-erect setae.

Measurements (n = 5): BL = 13.14—-15.86 (14.06+1.09), WL = 11.43—-13.00
(12.29+0.74); HL = 3.25—-3.50 (3.32+0.12), HW = 3.80-4.40 (4.03+0.24), IOD
= 0.48-0.55 (0.5240.03), OOD = 0.80-1.00 (0.88+0.08), OCD = 1.15-1.40
(1.25+0.01), UOD = 2.55-2.90 (2.6640.16), MOD = 2.90-3.35 (3.04+0.19),
LOD = 2.93-3.38 (3.0840.18), IAD = 0.40-0.55 (0.47+0.06), AOD = 0.95-1.15
(1.01+0.08), CAL = 0.42-0.48 (0.46+0.03), CPL = 0.61-0.66 (0.64+0.02), EL =
2.00—2.25 (2.09+0.10), EW = 0.75—0.85 (0.79+0.04), GW = 1.20—-1.48 (1.28+0.12),
SPL.=1.4891 77, (1:G020 LD eFI1L ='0.2340:2320 00) R21 7= 0:2340.2520,00), FSL
= 0.23 (0.23+0.00), F2W = 0.23-0.26 (0.23+0.01); MsW = 3.55—-3.80 (3.71+40.12),
SCL = 0.43-0.48 (0.45+0.02), MNL = 0.23-0.28 (0.2540.02), MPL = 0.25—0.28
(0.26+0.01); MtW = 4.20-4.75 (4.44+0.22).

Structure and sculpture. Head wider than long; HW:HL = 1:0.82. Vertex flat
in frontal view. MOD:UOD:LOD = 1:0.88:1.01. LOD:OOD:OCD = 1:1.69:2.40.
IAD:AOD = 1:2.15. PP between ocellocular area and vertex moderately dense, IS
smooth (IS = 1—3d). Paraocular area with moderately dense PP, IS smooth; PP on
lower paraocular area sparser than on upper ones (IS = 1—1.5d in upper, = 1—3d in
lower areas). Frons with dense PP, IS smooth (IS = 0.5—1.5d). Supraclypeus slight-
ly convex, with PP becoming gradually sparse lower part, IS smooth. CPL:CAL =
1:0.72. Clypeus flat and inclined, with sparse PP, IS smooth (IS = 1.5—5d). EW:GW
= 1:1.61. Genal area with moderately dense PP, IS smooth (IS = 1—3d). Malar space
linear. Occiput not carinate. Postgena slanting, with sparse PP and weak tessellation.
Hypostomal carinae nearly parallel. Mandible long, approximately 1.3 x as long as
EL. Labrum (Fig. 7): basal area approximately 2 x wider than long; distal process ap-
proximately 1.4 x as long as basal area, triangular, and without lateral projection; distal
keel narrow, pointed apically. Antenna short, not reaching metasoma. F1—F3L:F2W
=1° 00: .0051-03.

Dorsolateral angle of pronotum obtuse; lateral surface with oblique ridges on an-
terior half (Fig. 9); lateral ridge absent; lateral lobe rounded. Mesoscutum (Fig. 10)
with dense PP, but PP on disc sparser than laterally (IS = 1—-2d on disc, = 0.5—1d in
the remainder); mesoscutum anteriorly shallowly depressed along middle parapsidal
line; parapsidal line a narrow groove. Mesoscutellum similarly sculptured as mesos-
cutum. Metanotum rugulose. Mesepisternum (Fig. 11) reticulate-rugulae over entire

surface. SCL:MNL:MPL = 1:0.56:0.59. Propodeum: metapostnotum (Fig. 12) with

146 Ryuki Murao et al. / Journal of Hymenoptera Research 38: 141-153 (2014)

\ fi \, ~N AN

Figures 7-12. Lasioglossum (A

pronotum 10 mesoscutum II mesepisternum 12 metapostnotum. 7, 9-12 female; 8 male.

longitudinal ridges that do not attain posterior margin, posteriorly weakly rugulose,
posterior margin not carinate; dorsolateral slope with oblique ridges; lateral and pos-
terior surfaces rugulose; posterior surface with lateral carinae on lower half, without
oblique carina. Coxae of usual shape, without tubercle. Fore trochanter narrow, longer
than wide. Basitibial plate of hind leg carinate marginally. Inner hind tibial spur serrate
(Fig. 19). Fore wing with three submarginal cell.

Lasioglossum (Acanthalictus) dybowskii (Hymenoptera, Halictidae) newly recorded... 147

terga 15 2nd metasomal sterna in lateral view (arrow indicate) 16 setae on metasomal sterna I 7 female

on the flower of Angelica anomala \8 collecting site at Mt. Gariwangsan, South Korea. 13, 17 female;
14-16 male.

T1-T3 as in Fig. 13: disc of T1 medially with sparse fine PP, apically with moder-
ately dense fine PP, and without lineolation over entire surface; discs of T2-T3 basally
with sparse fine PP, the remaining parts sculptured similarly to T1. Disc of T4 with

148 Ryuki Murao et al. / Journal of Hymenoptera Research 38: 141-153 (2014)

moderately dense PP and very weak tessellation over entire surface. Metasomal sterna
not modified.

Male. Coloration. Body black except the following parts: clypeus slightly dark
yellow on lower half; flagellum dark brown ventrally; pronotum anteriorly yellowish
brown; tegula blackish brown, translucent; fore tibia reddish brown on outer surface;
tibial spur yellow; wings transparent, veins and stigma pale brown.

Pubescence. Body setae whitish to pale yellowish. Head with sparse erect setae
except for lower paraocular area that is covered with thin tomentum. Mesosoma with
sparse elect fine branched setae, and pronotum with thin tomentum marginally. T1
basally with sparse erect setae. T2—T3 basolateral with thin whitish appressed setae.
S2-S5 as in Fig. 16: S2 apicolaterally with sparse semi-erect fine branched setae; S3-S5
laterally with erect fine branched seta tufts; setae on S5 longer than on other sterna.

Measurements (n = 1, unit mm): BL = 17.14, WL = 13.14; HL = 3.70, HW =
37S NOD!= 0557 OOD 0.85, 0CD = 1:30, VOD =250, MOD =.2570, LODs=
2.25, IAD = 0.5, AOD = 0.7. CAL = 0.40, CPL = 0.94, EL = 2.40, EW = 0.85, GW
= 1.25, SPL = 0.81, FIL = 0.26, F2L = 0.42, F3L = 0.42, F2W = 0.26; MsW = 3.70,
SCL = 0.80, MNL = 0.50, MPL = 0.63; MtW = 3.85.

Structure and sculpture. Head as long as wide; HW:HL = 1:0.99. Vertex flat in fron-
tal view. MOD:UOD:LOD = 1:0.93:0.83. IOD:OOD:OCD = 1:1.55:2.36. IAD:AOD
= 1:1.4. PP between ocellocular area and vertex moderately dense, IS smooth (IS = 1—3d).
Paraocular area with dense PP, IS smooth; PP on lower paraocular area sparser than on
upper one (IS < d in upper part, IS < d or 0.5—2d in lower part). Frons with reticulate PP.
Supraclypeus weakly convex with dense PP, IS smooth (IS = 1—1.5d). CPL:CAL = 1:0.43.
Clypeus with dense PP, IS smooth (IS = 0.5—1.5d). EW:GW = 1:1.47. Malar space short,
0.19 x as long as mandible at base. Genal area sparsely punctuate, IS = 1-8d. Occiput
not carinate. Postgena slanting, with sparse PP and weak tessellation. Hypostomal carinae
nearly parallel. Mandible edentate (without subapical tooth) and robust. Labrum without
distal process. Antenna short, not reaching metasoma. F1—F3L:F2W = 1:1.63:1.63:1.00,
F2L:F2W = 1:0.62; flagellum nearly flattened ventrally.

Dorsolateral angle of pronotum obtuse; lateral surface with oblique ridges on an-
terior half; lateral ridge absent; lateral lobe rounded. Tegula ovoid, with shallow and
moderately dense PP (IS = 1—2d) on anterior half. Mesoscutum and mesoscutellum
with dense PP over entire surface, IS smooth (IS = 1—1.5d); mesoscutum anteriorly
deeply depressed along middle parapsidal line; parapsidal line a narrow groove. Metano-
tum and mesepisternum reticulate-rugulose over entire surface. SCL:MNL:MPL =
1:0.63:0.78. Propodeum: metapostnotum with irregular sinuate ridges that not attain
posterior margin, posteriorly weakly rugulose, posterior margin not carinate; dorso-
lateral slope and lateral surface reticulate-rugulose; posterior surface with lateral cari-
nae on lower half, without oblique carina, and with many oblique ridges over entire
surface. Fore trochanter rounded and narrow, longer than wide. Hind tibia without
basitibial plate. Hind basitarsus slender, approximately 6 x as long as wide. Inner hind
tibial spur finely serrate. Fore wing with three submarginal cell.

Lasioglossum (Acanthalictus) dybowskii (Hymenoptera, Halictidae) newly recorded... 149

Figures 19-25. Lasioglossum (Acanthalictus) dybowskii (Radoszkowski). 19 inner hind tibial spur 20 6th
metasomal sternum 21 7—8th metasomal sterna 22 genitalia in ventral view 23 genitalia in dorsal view
24 genitalia in lateral view 25 ventral retrorse lobe of genitalia, 19 female; 20-25 male. Scale bars: 19, 25=
0.25 mm; 20-—24= 0.5 mm.

T1-1T4 (Fig. 14 in T1—T3): disc of T1 medially and apically with fine PP that be-
come gradually denser toward apical part, without lineolation; T2—T4 similarly punc-
tuate as Tl nearly over entire surface, IS smooth. S7—S8 (Fig. 21): S7 with short and
triangular median process; median process of S8 triangular, with sparse simple setae.

Genitalia (Figs 22-25): gonobase flat at the bottom, ventral arms not connected
with each other at upper ends; gonocoxite smooth, and inner dorsal margin angulate
at the approximately basal one-third; gonostylus located at ventral side of gonocox-
ite, and with sparse short setae; ventral retrorse lobe slender, not reaching gonobase,
rounded apically, and with dense short setae.

150 Ryuki Murao et al. / Journal of Hymenoptera Research 38: 141-153 (2014)

A checklist of the genus Lasioglossum in Korean Peninsula

Forty species of Lasioglossum in total have been recorded from the Korean Peninsula
by various researchers (Ebmer 1978b, 1995, 1996, 2006; Ebmer et al. 2006; Lee et al.
1999; Murao 2011; Murao and Tadauchi 2007, 2008, 2011; Pesenko 2006, 2007b).
Lasioglossum problematicum (Bliithgen) known from Far East Asia is also recorded
from North Korea by Ebmer (1978b) based on female specimens. After that, Pesenko
(2007b) regarded the continental records of L. problematicum as L. virideglaucum Eb-
mer and Sakagami. Females of L. problematicum and L. virideglaucum cannot be distin-
guished from each other (Ebmer 2006; Murao et al. 2006), and the distribution of these
species should be verified based on male specimens or a DNA analysis. In the following
list, Lasioglossum nipponicola Sakagami and Tadauchi, L. gorkiense (Bliithgen), and L.
koreanum Ebmer are synonymized by Pesenko (2006) as follows: L. nipponicola = L.
agelastum Fan & Ebmer, L. gorkiense = L. scitulum (Smith) , and L. koreanum = L. oc-
cidens (Smith). However, these synonymies need to be revised in a future study.

Lasioglossum series (strong-veined Lasioglossum)

1. Lasioglossum denticolle (Morawitz, 1891): North Korea (Ebmer 1978b)

2. Lasioglossum exiliceps (Vachal, 1903): North Korea (Ebmer 1996)

3. Lasioglossum formosae (Strand, 1910): North Korea (Ebmer 1978b). Pesenko
(2006) recorded it from “Chanpen, Korean Peninsula”.

4, Lasioglossum gorkiense (Bliithgen, 1931): North Korea (Ebmer 1978b)

5. Lasioglossum kansuense (Bliithgen, 1934): North Korea (Ebmer 1978b)

6. Lasioglossum koreanum Ebmer, 1978: North Korea (Ebmer 1978b)

7. Lasioglossum nipponicola Sakagami & Tadauchi, 1995: South Korea (Lee et al.
1999; Ebmer 2006)

8. Lasioglossum primavera Sakagami & Maeta, 1990: South Korea (Murao and Ta-
dauchi 2011)

9. Lasioglossum proximatum (Smith, 1879): North Korea (Ebmer 1996)

10. Lasioglossum subopacum subopacum (Smith, 1853): South Korea (Murao 2011)

11. Lasioglossum sutshanicum Pesenko, 1986: North Korea (Ebmer 1996)

12. Lasioglossum upinense (Morawitz, 1890): North Korea (Ebmer 1996)

Hemihalictus series (weak-veined Lasioglossum)

13. Lasioglossum affine (Smith, 1853): North and South Korea (Ebmer 1978b; Murao
and Tadauchi 2007; Pesenko 2007b)

14. Lasioglossum albipes (Fabricius, 1781): North Korea (Ebmer 1978b)

15. Lasioglossum apristum (Vachal, 1903): North and South Korea (Ebmer 1978b, 1995;
Murao and Tadauchi 2007)

16. Lasioglossum baleicum (Cockerell, 1937): North and South Korea (Ebmer 1978b,
2006; Murao and Tadauchi 2007)

17. Lasioglossum calceatum (Scopoli, 1763): North Korea (Ebmer 1978b)

18. Lasioglossum duplex (Dalla Torre, 1896): South Korea (Murao and Tadauchi 2007)

Lasioglossum (Acanthalictus) dybowskii (Hymenoptera, Halictidae) newly recorded... 151

Lasioglossum dybowskii (Radoszkowski, 1876): North and South Korea (Ebmer 1996;
present study)

Lasioglossum ellipticeps (Bliithgen, 1923): North Korea (Ebmer 1978b)
Lasioglossum fratellum betulae Ebmer, 1978: North Korea (Ebmer 1978b)
Lasioglossum hoffmanni (Strand, 1915): North and South Korea (Ebmer 1978b,
1995, as L. vulsum; Murao and Tadauchi 2007)

Lasioglossum kankauchare (Strand, 1914): North Korea (Ebmer 1978b)
Lasioglossum kiautshouense (Strand, 1910): North Korea (Ebmer 1978b, 1996)
Lasioglossum nipponense (Hirashima, 1953): South Korea (Ebmer 2006; Murao
and Tadauchi 2007)

Lasioglossum pallilomum (Strand, 1914): North and South Korea (Ebmer 1996, 2006)
Lasioglossum percrassiceps (Cockerell, 1931): South Korea (Murao and Tadauchi 2007)
Lasioglossum problematicum (Bliithgen, 1923) or Lasioglossum virideglaucum Ebmer
& Sakagami, 1994: North Korea (Ebmer 1978b)

Lasioglossum rufitarse (Zetterstedt, 1838): North Korea (Ebmer 1978b)
Lasioglossum sakagamii Ebmer, 1978: North Korea (Ebmer 1978b)

Lasioglossum sibiriacum (Bliithgen, 1923): North and South Korea (Ebmer
1978b, 1995; Murao and Tadauchi 2007)

Lasioglossum simplicior (Cockerell, 1931): North Korea (Ebmer 1978b)
Lasioglossum speculinum (Cockerell, 1925): North Korea (Ebmer 1978b)
Lasioglossum subfratellum (Bliithgen, 1934): North Korea (Ebmer 1995)
Lasioglossum subfulvicorne subfulvicorne (Bliithgen, 1934): North Korea (Ebmer
1978b as L. austriacum Ebmer; Ebmer1995)

Lasioglossum taeniolellum (Vachal, 1903): North Korea (Ebmer 1978b)
Lasioglossum transpositum (Cockerell, 1925): South Korea (Murao and Tadauchi
2008)

Lasioglossum villosulum trichopse (Strand, 1914): North Korea (Ebmer 1978b)
Lasioglossum viridellum (Cockerell, 1931): North Korea (Ebmer 1978b)
Lasioglossum vulsum (Vachal, 1903): North Korea (Ebmer 1995, as L. trispine;
Ebmer et al. 2006)

Acknowledgements

We express our thanks to Dr. Layne Westover (Kyushu University) for his kindness in
brushing up an early draft. Murao expresses his thanks to Dr. Maxim Yu. Proshcha-

lykin (Institute of Biology and Soil Science, Far Eastern Branch of Russian Academy
of Sciences, Vladivostok, Russia) for sending a valuable reference. This research was

supported in part by the JSPS Institutional Program for Young Researcher Overseas
Visits (to Murao), the Environment Research and Technology Development Fund
(S-9-2(8)) of the Ministry of the Environment, Japan (to Tadauchi), and the Grant-
in-Aid for Scientific Research (B) from the Japan Society for the Promotion of Science
(No. 24405016) (Head Investigator: Tadauchi).

152 Ryuki Murao et al. / Journal of Hymenoptera Research 38: 141-153 (2014)

References

Cockerell TDA (1924) Descriptions and records of bees—CI. Annals and Magazine of Natural
History (9) 14: 179-185. doi: 10.1080/00222932408633105

Danforth BN, Conway L, Ji S (2003) Phylogeny of eusocial Lasioglossum reveals multiple losses of
eusociality within a primitively eusocial clade of bees (Hymenoptera: Halictidae). Systematic
Biology 52: 23-36. doi: 10.1080/10635 150390132687

Ebmer AW (1978a) Die Halictidae der Mandschurei (Apoidea, Hymenoptera). Bonner zoolo-
gische Beitrage 29: 183-221.

Ebmer AW (1978b) Die Bienen der Gattungen Halictus Latr., Lasioglossum Curt. und Dufourea
Lep. (Hymenoptera, Halictidae) aus Korea. Annales Historico-Naturales Musei Nationalis
Hungarici 70: 307-319.

Ebmer AW (1995) Asiatische Halictidae, 3. Die Artengruppe der Lasioglossum carinate-
Evylaeus (Insecta: Hymenoptera: Apoidea: Halictidae: Halictinae). Linzer biologische
Beitrage 27: 525-652.

Ebmer AW (1996) Asiatische Halictidae, 5. Daten zur Aculeaten-Fauna der Ussuri-Region unter
Beriicksichtigung der angrenzenden Gebiete (Insecta: Hymenoptera: Apoidea: Halictidae:
Halictinae). Linzer biologische Beitrage 28: 261-304.

Ebmer AW (2006) Daten zur Aculeaten-Fauna der Ussuri-Region unter Beriicksichtigung der
angrenzenden Gebiete—2. Arten der Gattungen Halictus, Lasioglossum, Dufourea, Macropis
aus dem Lazovski Zapovednik — Naturreservat Laso (Insecta: Hymenoptera: Apoidea: Hal-
ictidae: Halictinae, Melittidae). Linzer biologische Beitrage 38: 541-593.

Ebmer AW, Murao R, Tadauchi O (2006) Taxonomic notes on Lasioglossum (Evylaeus) vulsum
(Vachal, 1903) (Hymenoptera, Halictidae). Esakia 46: 31-33.

Gibbs J (2010) Revision of the metallic species of Lasioglossum (Dialictus) in Canada (Hymenoptera,
Halictidae, Halictini). Zootaxa 2591: 1-382.

Gibbs J, Brady SG, Kanda K, Danforth BN (2012) Phylogeny of halictine bees supports origin
of eusociality for Halictus and Lasioglossum (Apoidea: Anthophila: Halictidae). Molecular
Phylogenetics and Evolution 65: 926-939. doi: 10.1016/j.ympev.2012.08.013

Lee HS, Kim HT, Woo KS (1999) One newly recorded species of the genus Lasioglossum Curtis
(Hymenoptera: Halictidae). Korean Journal of Apiculture 14: 32-34.

Michener CD (2007) The Bees of the World, 2nd ed. John Hopkins University Press, Baltimore,
Maryland, xvi + [1] + 953pp.

Murao R (2011) Taxonomic notes on Lasioglossum (Lasioglossum) subopacum (Smith) and L.
(L.) okinawa Ebmer et Maeta (Hymenoptera, Halictidae) from Asia. Zookeys 143: 83-92.
doi: 10.3897/zookeys. 143.2077

Murao R, Tadauchi O (2007) A revision of the subgenus Evy/aeus of the genus Lasioglossum in
Japan (Hymenoptera, Halictidae) Part I. Esakia 47: 169-254.

Murao R, Tadauchi O (2008) Taxonomic notes and floral associations of Lasioglossum (Evylaeus)
transpositum and L. (£.) metis (Hymenoptera, Halictidae). Japanese Journal of Systematic
Entomology 14: 95-106.

Lasioglossum (Acanthalictus) dybowskii (Hymenoptera, Halictidae) newly recorded... 153

Murao R, Tadauchi O (2011) Occurrence of Lasioglossum (Lasioglossum) primavera (Hyme-
noptera, Halictidae) in Shikoku, Kyushu, and the Korean Peninsula. Japanese Journal of
Systematic Entomology 17: 365-368.

Murao R, Ebmer AW, Tadauchi O (2006) Three new species of the subgenus Evylaeus of the
genus Lasioglossum from Eastern Asia (Hymenoptera, Halictidae). Esakia 46: 35-51.

Pesenko YuA (2006) Contributions to the halictid fauna of the Eastern Palaearctic Region:
genus Lasioglossum Curtis (Hymenoptera: Halictidae, Halictinae). Zoosystematica Rossica
15: 133-166.

Pesenko YuA (2007a) Subgeneric classification of the Palaearctic bees of the genus Evylaeus
Robertson (Hymenoptera: Halictidae). Zootaxa 1500: 1-54.

Pesenko YuA (2007b) A taxonomic study of the bee genus Evylaeus Robertson of Eastern
Siberia and the Far East Russia (Hymenoptera: Halictidae). Zoosystematica Rossica 16
(1): 79-123.

Radoszkowski O (1876) Matériaux pour servir 4 une faune hyménoptérologique de la Russie.
(Suite). Horae Societatis Entomologicae Rossicae 12(1): 82-110.

Sakagami SF, Tadauchi O (1995) Taxonomic studies on the Halictine bees of Lasioglossum
(Evylaeus) lucidulum subgroup in Japan with comparative notes on some Palaearctic species

(Hymenoptera, Apoidea). Esakia 35: 141-176.