Centris (Hemisiella) Moure, 1945

Vivallo, Felipe & Vélez, Danny, 2016, A synopsis of the subgenus Centris (Hemisiella) Moure, 1945 (Hymenoptera: Apidae: Centridini) in Colombia, with description of a new species, Zootaxa 4162 (1), pp. 107-133 : 129

Key to the Colombian species of Centris (Hemisiella) Moure, 1945

Females

1 Metasoma black; scopa with blackish pilosity...................................... Centris facialis Mocsáry, 1899

- Metasoma orange or brown; scopa with yellowish gray, yellow or orange pilosity................................. 2

2 Hairs on mesoscutum and mesoscutellum yellow with black tips; lower lateral margin of labrum dark brown............ 3

- Hairs on mesoscutum and mesoscutellum either yellow or grayish, without black tips; labrum completely yellow........ 4

3 Clypeal disc concave; labrum with a black, raised protuberance in the shape of an inverted triangle; primary basitibial plate with very dense pilosity, hiding integument centrally................................ Centris vittata Lepeletier, 1841

- Clypeal disc relatively flat; labrum yellow and uniformly convex; primary basitibial plate with sparse pubescence, not hiding integument centrally..................................................... Centris dichrootricha ( Moure, 1945)

4 Mesoscutum and mesoscutellum with yellowish gray hairs; mesepisternum with light gray to gray pubescence; scopa with orange brown or yellow grayish hairs.................................................................... 5

- Mesoscutum and mesoscutellum with yellow pubescence; mesepisternum with intense yellow greenish, light yellow or whitish hairs; scopa with yellowish white or yellow hairs........................................................... 6

5 Head and mesosoma with dark gray pubescence; scopa yellow grayish; clypeal disc not areolate, with fine, dense, and relatively uniform punctuation...................................................... Centris nebulosa new species

- Head and mesosoma with light gray yellowish pubescence; scopa orange brown; clypeal disc areolate............................................................................................ Centris merrillae Cockerell, 1919

6 Head, mesoscutum and mesoscutellum with intense yellow greenish hairs; basitibial scopa with whitish and mostly simple hairs on basal half; clypeal disc strongly areolate...................................... Centris tarsata Smith, 1874

- Head, mesoscutum and mesoscutellum with light yellow hairs; basitibial scopa with yellow plumose hairs on basal half; clypeal disc not areolate, usually with a smooth longitudinal carina, poorly developed in some specimens......................................................................................... Centris trigonoides Lepeletier, 1841