Sphecodogastra Ashmead, 1899

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

Subgenus Sphecodogastra Ashmead, 1899

Sphecodogastra Ashmead 1899: 92 . Type species: Sphecodes texana Cresson, 1872 , by original designation. Halictus (Calchalictus) Warncke 1975: 99 . Type species: Apis calceata Scopoli, 1763 , by original designation. Halictus (Inhalictus) Warncke 1975: 96 . Type species: Hylaeus interruptus Panzer, 1798 , by original designation. Minutulaeus Pesenko 2007a: 11. Type species: Hylaeus minutulus Schenck, 1853 , by original designation. Nodicornevylaeus Pesenko 2007a: 11. Type species: Halictus nodicornis Morawitz, 1889 , by original designation and

monotypy.

Monilevylaeus Pesenko 2007a: 13. Type species: Halictus immunitus Vachal, 1895 , by original designation and monotypy. Tricinctevylaeus Pesenko 2007a: 14. Type species: Halictus tricinctus Schenck, 1874 , by original designation. Fratevylaeus Pesenko 2007a: 14. Type species: Halictus fratellus Pérez, 1903 , by original designation. Malachevylaeus Pesenko 2007a: 15. Type species: Melitta malachura Kirby, 1802 , by original designation. Pauxevylaeus Pesenko 2007a: 11. Type species: Hylaeus pauxillus Schenck, 1853 , by original designation.

Diagnosis. This subgenus is generally separated from the other subgenera in Hemihalictus series occurring in eastern Asia by a combination of the following character states: head and mesosoma black in both sexes (except for the apristum group with weak green-metallic luster in female as in Fig. 2A ); female mandible with an apical tooth; female labrum with well developed basal elevation; mesepisternum coarsely reticulate-rugulose over entire surface in both sexes ( Fig. 2 C); posterior surface of propodeum with complete lateral carina reaching to posterior edge of metapostnotum as in Fig. 3 B ( L. boreale Svensson et al. , L. solisortus Ebmer & Sakagami , and L. subtropicum Sakagami et al. with short lateral carina not reaching to posterior edge of metapostnotum as variation); and male S6 straight apically.

Comments. Palearctic species is classified into 9 species groups combined Pesenko’s system ( Pesenko 2007a) and apristum group ( Ebmer 2002 and Murao & Tadauchi 2005): apristum group ( Ebmer 2002), calceatum group, fulvicorne-fratellum group ( Ebmer 1995), immunitum group, malachurum group ( Ebmer 1995), minutulum group ( Ebmer 1976b), nodicorne group, tricinctum group ( Ebmer 1995), and pauxillum group ( Ebmer 1995) (treated in Pesenko 2007a, as Evylaeus (E.), E. (Fratevylaeus), E. (Monilevylaeus), E. (Malachevylaeus), E. (Minutulaeus), E. (Nodicornevylaeus),, E. (Tricinctevylaeus), E. (Pauxevylaeus). Three groups of them occur in the Korean Peninsula: apristum , calceatum , fulvicorne - fratellum

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: ♀.