Lasioglossum apristum

Murao, Ryuki, 2017, Bees of the Hemihalictus series of Lasioglossum Curtis (Hymenoptera, Halictidae) in South Korea, Zootaxa 4268 (4), pp. 451-488 : 466

The apristum group

Diagnosis. This group is separated from the other Palearctic groups by a combination of the following character states: 1) female head and mesosoma with weak green-metallic luster as in Fig. 2A ); 2) female labrum with round and depressed lateral projection ( Murao & Tadauchi 2005, Figs 3A, 3 C); 3) inner hind tibial spur of female finely serrate ( Murao & Tadauchi 2007, Fig. 8 E); 4); gonostylus of male genitalia located at inner side of gonocoxite apically ( Murao & Tadauchi 2005, Fig. 4B ); 5) and male genitalia without ventral retrorse lobe.

Comments. In the Pesenko’s systematic ( Pesenko 2007a), this group is located at a subgroup of the calceatum group (as Evylaeus ( Evylaeus )).

Figures

FIGURE 2. A, B: body color of head and mesosoma. C, D, F: mesepisternum. E: pronotum in lateral view. A: Lasioglossum ellipticeps (Blüthgen). B: L. calceatum (Scopoli). C: L. apristum (Vachal). D: L. miyabei Murao, Ebmer & Tadauchi. E, F: L. percrassiceps (Cockerell). A – F: ♀.

FIGURE 3. A: pronotum in lateral view. B, C: posterior surface of propodeum. D, E: posterior area of mesoscutum. A: Lasioglossum apristum (Vachal). B: L. affine (Smith). C: L. transpositum (Cockerell). D: L. sibiriacum (Blüthgen). E: L. hoffmanni (Strand). A – E: ♀.

FIGURE 4. A – F: inner hind tibial spur. A: L. affine (Smith). B: L. albipes villosum Ebmer. C: L. calceatum (Scopoli). D: L. nipponense (Hirashima). E: L. baleicum (Cockerell) or L. vulsum (Vachal). F: L. subfulvicorne subfulvicorne (Blüthgen). A – F: ♀. Scale bars: 0.2 mm.

FIGURE 8. A – D: mesoscutum. E, F: distal part of metasomal sterna. A: Lasioglossum villosulum (Kirby). B: L. japonicum (Dalla Torre). C: L. transpositum (Cockerell). D: L. allodalum Ebmer & Sakagami. E: L. percrassiceps (Cockerell). F: L. apristum (Vachal). A – D: ♀. E, F: ♂.