Humilocoris, Harrington, 1980

Ban, Teruaki, 2023, A new species of the genus Stigmatonotum (Hemiptera: Heteroptera: Rhyparochromidae) from Japan, with notes on related species from the East Palaearctic and Oriental Regions, Acta Entomologica Musei Nationalis Pragae 63 (2), pp. 265-278 : 276

Key to species of Humilocoris and Stigmatonotum from the Palaearctic and Oriental Regions

1 Head, pronotum, scutellum and corium covered with long erect setae; total number of profemoral spines 5 or 6. ..... Humilocoris cephalotes ( Kiritshenko, 1931)

– Head, pronotum, scutellum and corium covered with short decumbent setae; total number of profemoral spines 1 to 3. .................................................................. 2

2 Antennomeres II and IV more than twice longer than scape; profemur armed with 2 large spines and 1 small spine. .................................... S. macronotum sp. nov.

– Antennomeres II and IV less than twice longer than scape; profemur armed with only 1 small spine. ...... 3

3 Scape dark brown; profemur with brown or dark brown annulation. ........................................................ ....................... S. geniculatum ( Motschulsky, 1863)

– Scape yellow; profemur uniformly pale yellow, without brown or dark brown annulation. ................... ................................ S. rufipes ( Motschulsky, 1866)