Lasioglossum (Dialictus) negoroi Murao & Tadauchi, 2008

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 : 22-23

Lasioglossum (Dialictus) negoroi Murao & Tadauchi, 2008

Figs 4D , 5 J–L, 12E

Lasioglossum (Evylaeus) negoroi Murao & Tadauchi, 2008: 37–40 (holotype: ELKU, ♂; type locality: Toyama Pref., Japan).

Diagnosis

This species is separated from other members of the atroglaucum subgroup by a combination of the following characters: male S4 basally with sparse and moderately long erect hairs ( Murao & Tadauchi 2008; Fig. 2H ); male S5 with a linear shallow groove ( Fig. 5K ); male S6 with a pair of thin hair tufts; and gonostylus of male genitalia truncated on top ( Murao & Tadauchi 2008; Fig. 2 B–C).

Material examined

Holotype

JAPAN: ♂ (Code No. ELKU3261 ), Kobo, Tateyama, Toyama Pref., Honshu, 10 Sep. 1997 (H. Negoro, ELKU).

Paratype

JAPAN: 1 ♂, Koganeyu, Minami-ku, Sapporo-shi, Hokkaido (label in Japanese), 18 Sep. 2004 (K.

Kinota, ELKU).

Additional material

JAPAN: Honshu: 1 ♂, Nikko-Yumoto (Shimozuke), 15 Aug. 1937 ( T. Esaki & K. Yasumatsu, ELKU); Mt. Zao, Miyagi Pref., 1 ♂, 4 Sep. 1980 (K. Goukon, cGou), 1 ♂, 1 Sep. 1982 (K. Goukon, cGou); 1 ♂, Mt. Zao, alt. 1300 m, Miyagi Pref., 28 Sep. 1996 (K. Goukon, cGou).

Female

Unknown.

Distribution

Japan (Hokkaido, northern and central Honshu).

Flight period

Male: August to October.

Flower records

Araliaceae : Aralia continentalis Kirag .. Asteraceae : Aster microcephalus (Miq.) Franch. & Sav. var. ovatus (Franch. & Sav.) Soejima & Mot. Ito ; Solidago virgaurea L.

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. 2. — A–E. Lasioglossum (Dialictus) viridellum (Cockerell, 1931), ♂. — F. L. (D.) aeratum (Kirby, 1802), ♂. — G. L. (D.) aligrum (Blüthgen, 1923), ♂. — H. L. (D.) annulipes (Morawitz, 1876), ♂. — I. L. (D.) leucopus (Kirby, 1802), ♂. A. Genitalia in ventral view. B. Genitalia in dorsal view. C. Genitalia in lateral view. D, F–I. Ventral retrorse lobe of genitalia. E. S7–S8. Scale bars: A–C, E = 0.2 mm, D, F–I = 0.1 mm.