Leuchalictus Warncke, 1975

Murao, Ryuki, Yeh, Wen-Chi & Lu, Sheng-Shan, 2023, A review of Lasioglossum (Leuchalictus) in Taiwan (Hymenoptera: Apoidea: Halictidae), Acta Entomologica Musei Nationalis Pragae 63 (2), pp. 363-382 : 364

Subgenus Leuchalictus Warncke, 1975

Leuchalictus Warncke,1975: 98, as subgenus of Halictus Latreille, 1804 . Type species: Apis leucozonia Schrank, 1781 , by original designation.

Bluethgenia Pesenko, 1986: 136 , as subgenus of Lasioglossum Curtis, 1833 . Type species: Halictus dynastes Bingham, 1898 , by original designation.

Sericohalictus Pesenko, 1986: 137, as subgenus of Lasioglossum Curtis, 1833 . Type species: Halictus subopacus Smith, 1853 , by original designation.

Diagnosis. This subgenus is separated from the other subgenera of Lasioglossum series occurring in eastern

Asia, i.e. Ctenonomia Cameron, 1903 , Homalictus

Cockerell, 1919 and Lasioglossum s. str., by the com-

bination of the following characters: 1) body black,

without metallic luster; 2) inner hind tibial spur of female serrate as in Figs 4A , 8A , 12A ; 3 ) metasomal terga rounded from dorsal to ventrolateral parts; 4) male

S6 with unique hair tuft as in Figs 3E , 7E , 11F ; and 5 )

male genitalia without ventral retrorse lobe as in Figs

4D, 12D ( MURAO et al. 2015a).

Figures

Figs 3A–E. Lasioglossum (Leuchalictus) formosae (Strand, 1910), male. A – head in frontal view; B – mesoscutum; C – metapostnotum; D – 1st to 2nd metasomal terga; E – 3rd to 6th metasomal sterna.

Figs 4A–D. Lasioglossum (Leuchalictus) formosae (Strand, 1910).A – female; B–D – male. A – inner hind tibial spur; B – 7th to 8th metasomal sterna; C – gonostylus in ventral view; D – genitalia (left, ventral view; right, dorsal view). Scale bars: 0.2 mm.

Figs 7A–E. Lasioglossum (Leuchalictus) subopacum subopacum (Smith, 1853), male. A – head in frontal view; B – mesoscutum; C – metapostnotum; D – 1st to 2nd metasomal terga; E – 4th to 6th metasomal sterna.

Figs 8A–B. Lasioglossum (Leuchalictus) subopacum subopacum (Smith, 1853). A – female; B – male. A – inner hind tibial spur; B – gonostylus in ventral view. Scale bars: 0.2 mm.

Figs 11A–F. Lasioglossum (Leuchalictus) subinoum sp. nov., holotype, male.A – head in frontal view; B – mesoscutum; C – metapostnotum; D – 1st to 3rd metasomal terga; E – 3rd to 7th metasomal terga; F – 3rd to 6th metasomal sterna.

Figs 12A–D. Lasioglossum (Leuchalictus) subinoum sp. nov. A – paratype, female; B–D – paratype, male. A – inner hind tibial spur; B – 7th to 8th metasomal sterna; C – gonostylus in ventral view; D – genitalia (left, ventral view; right, dorsal view). Scale bars: 0.2 mm.

Fig. 5. Distribution map of Lasioglossum (Leuchalictus) formosae (Strand, 1910). Heat map indicates suitable range predicted by Maxent’s analysis. White circles indicate geo-referenced specimen records.