Lasioglossum (Dialictus) yamanei Murao, Ebmer & Tadauchi, 2006

Murao, Ryuki, Tadauchi, Osamu & Lee, Heung-Sik, 2015, Synopsis of Lasioglossum (Dialictus) Robertson, 1902 (Hymenoptera, Apoidea, Halictidae) in Japan, the Korean Peninsula and Taiwan, European Journal of Taxonomy 137, pp. 1-50 : 21-22

Lasioglossum (Dialictus) yamanei Murao, Ebmer & Tadauchi, 2006

Figs 4C , 5 G–I, 12D

Lasioglossum (Evylaeus) yamanei Murao, Ebmer & Tadauchi, 2006: 46–49 (holotype: ELKU, ♀; type locality: Ibaraki Pref., Japan).

Evylaeus (Glauchalictus) yamanei – Pesenko 2007a: 26.

Diagnosis

This species is separated from the other members of the atroglaucum subgroup by a combination of the following characters: disc of male S4 with sparse hairs ( Fig. 4C ); male S5 deeply ∩-shaped apically ( Figs 4C , 5H ); and gonostylus of male genitalia large, obliquely truncated in lateral view ( Murao et al. 2006, Fig. 11B ). It may be closely related to L. taiwanense Murao sp. nov. from Taiwan in sharing the male S5 without a groove, the apical margin of male S5 incurved, and the ventral retrorse lobe of male genitalia short.

Material examined

JAPAN: Honshu: 1 ♀, Ohokawara, Aomori Pref., 28 Jun. 1992 (K. Goukon, cGou); 2 ♀♀, Tomiyacho, Miyagi Pref., 19 Apr. 2009 (K. Goukon, cGou); 1 ♀, Nishikawa-cho, Yamagata Pref., 15 Jul. 2001 (K. Goukon, cGou); 2 ♂♂, Ogawa, Saitama Pref., 15 Sep. 1971 ( T. Nambu, ELKU); 1 ♂, Mt. Mitake, Tokyo Pref., 12 Sep. 1964 (H. Suda, ELKU). Shikoku: 1 ♂, Monobe village, Kochi Pref., 23 Sep. 1971 (S. Ikudome, ELKU). Kyushu: 1 ♂, Mizunashi (Chikuzen), Fukuoka Pref., 15 Sep. 1935 (K. Yasumatsu, ELKU); 7 ♂♂, Mt. Wakasugi, Fukuoka Pref., 4 Nov. 1973 (Y. Yoneda, ELKU); 1 ♂, Mt. Hiko, Fukuoka Pref., 16 Aug. 1973 (Y. Yoneda, ELKU); 2 ♀♀, 1 ♂, Matoishi wilderness, Aso-shi, Kumamoto Pref., 32°55’46.305” N 130°58’11.555” E, 5 Aug. 2013 (Y. & R. Murao, cMur); 1 ♂, Mt. Sobo, Nishiusuki, Miyazaki Pref., 29 Jun. 1985 (K. Kusumoto, ELKU).

Distribution

Japan (Honshu, Shikoku, Kyushu), China (Zhejiang Prov.).

Flight period

Female: April to October.

Male: June to November.

Flower records

Twelve species in 5 families were reported as the floral records in Japan by Goubara et al. (2004, as Lasioglossum sp. 3), 15 species in 9 families by Murao et al. (2006), and 9 species in 7 families by Negoro (2012). The total number of species is 36 in 13 families as follows. Apiaceae : Angelica polymorpha Maxim. ; A. spp.; Osmorhiza aristata (Thunb.) Rydb. Asteraceae : Aster ageratoides Turcz. var. ageratoides ; A. glehnii F.Schmidt var. glehnii ; Erigeron annuus (L.) Pers.; Ixeridium dentatum (Thunb.) Tzvelev subsp. dentatum ; Lactuca indica L.; Solidago virgaurea L. subsp. asiatica (Nakai ex H. Hara) Kitam. ex H. Hara var. asiatica Nakai ex H. Hara ; Solidago virgaurea L. subsp. leiocarpa (Benth.) Hultén ; Taraxacum officinale Weber ex F.H. Wigg. Brassicaceae : Brassica rapa L. var. oleifera DC.; Capsella bursa-pastoris (L.) Medik.; Cardamine leucantha (Tausch) O.E. Schulz ; Eutrema tenue (Miq.) Makino. Caryophyllaceae : Stellaria sessiliflora Y. Yabe. Ericaceae : Elliottia paniculata (Siebold & Zucc.) Hook. f. f. albiflora (Y. Kimura) Yonek. Geraniaceae : Geranium sp.; G. thunbergii Siebold ex Lindl. et Paxton. Lamiaceae : Mosla dianthera (Buch.-Ham. ex Roxb.) Maxim. Liliaceae : Allium thunbergii G. Don. Polygonaceae : Persicaria thunbergii (Siebold et Zucc.) H. Gross. Ranunculaceae : Ranunculus japonicus Thunb. Rosaceae : Geum japonicum Thunb. ; Potentilla fragarioides L. var. major Maxim. ; P. freyniana Bornm. ; P. hebiichigo Yonek. & H. Ohashi ; Rubus palmatus Thunb. ; R. parvifolius L. Salicaceae : Salix spp. Violaceae : Viola obtusa Makino ; V. rostrata Pursh.

Habitat

This species has been collected in mountain areas in Japan. One of the collecting sites in Japan (Kumamoto Pref., Kyushu) is shown in Fig. 23B .

Figures

Fig. 4. Hairs on metasomal sterna in species of the atroglaucum subgroup, ♂. A. Lasioglossum (Dialictus) atroglaucum (Strand, 1913). B. Lasioglossum (Dialictus) virideglaucum Ebmer & Sakagami, 1994. C. Lasioglossum (Dialictus) yamanei Murao et al., 2006. D. Lasioglossum (Dialictus) negoroi Murao & Tadauchi, 2008, holotype. E. Lasioglossum (Dialictus) taiwanense Murao sp. nov., holotype.

Fig. 5. S4–S6 in species of the atroglaucum subgroup, ♂. — A–C. Lasioglossum (Dialictus) atroglaucum (Strand, 1913). — D–F. Lasioglossum (Dialictus) virideglaucum Ebmer & Sakagami, 1994. — G–I. Lasioglossum (Dialictus) yamanei Murao et al., 2006 — J–L. Lasioglossum (Dialictus) negoroi Murao & Tadauchi, 2008, paratype. — M–O. Lasioglossum (Dialictus) taiwanense Murao sp. nov., paratype. A, D, G, J, M: S4. B, E, H, K, N: S5. C, F, I, L, O: S6. Dotted area on S5 shows the apical depression. Scale bars: 0.2 mm.

Fig. 11. Lasioglossum (Dialictus) taiwanense Murao sp. nov., paratype, ♂. A. Genitalia in ventral view. B. Genitalia in dorsal view. C. Genitalia in lateral view. D. Gonostylus in dorsal view. E. Ventral retrorse lobe of genitalia. F. S7–S8. Scale bars: A–C, F = 0.2 mm, D–E = 0.1 mm.

Fig. 23. Habitats in Japan and South Korea. A. Takeshikakami-honiri, Ueda-shi, Nagano Pref., Japan. B. Matoishi wilderness, Aso-shi, Kumamoto Pref., Japan. C. Mt. Gariwangsan, Gangwon-do, South Korea. D. Lasioglossum (Dialictus) miyabei Murao et al., 2006, ♀ on flowers of Patrinia scabiosifolia Fisch. ex Trevir. in South Korea.