Centris, Fabricius, 1804

Genaro, Julio A. & Breto, Dayron, 2024, The genus Centris Fabricius in Cuba, with a new record and the description of a new species (Hymenoptera: Apoidea: Anthophila), Insecta Mundi 2024 (41), pp. 1-26 : 23

Key to Centris of Cuba . Males of C. fulviventris are unknown.

1. Female (antenna 12-segmented, metasoma with 6 exposed terga, T6 with pygidial plate)............ 2

— Male (antenna 13-segmented, metasoma with 7 exposed terga, T7 without pygidial plate).......... 7

2(1). Head quadrate in dorsal view ( Fig. 38 , 44 ); mandible elongate reaching opposing mandibular bases ( Fig. 37 ); clypeus short, emarginated laterally, with prominent incurved, subacute tooth medially ( Fig. 37, 38 )................................................................. C. cornuta Cresson

— Head not quadrate in dorsal view ( Fig. 3 , 10 , 29 , 50 , 53 ); mandible shorter, not reaching opposing mandibular base ( Fig. 12 , 31 , 51 , 55 ); clypeus long, not emarginated laterally, without prominent, incurved, subacute tooth medially ( Fig. 1 , 12 , 31 , 51 , 55 ).................................. 3

3(2). Head, mesosoma and metasoma clothed with black pubescence ( Fig. 29, 30 )..... C. aethiops Cresson

— Head, mesosoma and metasoma largely or entirely with pale pubescence ( Fig. 3 , 10, 11 , 49, 50 , 53, 54 ).................................................................................. 4

4(3). T1–T3 amber or light brown, without metallic reflections ( Fig. 50 , 53 ); secondary metabasitibial plate vestigial, without distinct overhanging margin ( Fig. 56 ).................................... 5

— T1–T3 black or dark brown, with metallic reflections ( Fig. 3 , 10 ); secondary metabasitibial plate with distinct overhanging margin ( Fig. 6 , 16 ).................................................. 6

5(4). Legs partially dark brown ( Fig. 54 ); vertex with some dark hairs mixed with yellow ones ( Fig. 55 ).......................................................................... C. tarsata F. Smith

— Legs amber ( Fig. 49 ); vertex without dark hairs ( Fig. 51 ).................... C. fulviventris Cresson

6(4). Mesoscutal hairs not distinctly dark-tipped ( Fig. 3 ); metatibia with pubescence on anterior surface black; hind leg hairs entire black ( Fig. 3, 5 ); metabasitibial secondary plate with apex acute ( Fig. 6 )......................................................................... C. poecila Lepeletier

— Mesoscutal hairs distinctly dark-tipped; metatibia with pubescence on anterior surface yellow; hind leg hairs partial black ( Fig. 11, 12 ); metabasitibial secondary plate broadly rounded ( Fig. 16 )................................................................ C. taina Genaro and Breto , n. sp.

7(1). Labrum longer than clypeus ( Fig. 41 ); metabasitarsus with spine on inner posterior margin ( Fig. 43 ); posterior surface with robust setae....................................... C. cornuta Cresson

— Labrum shorter than clypeus ( Fig. 2 , 15 , 57 ); metabasitarsus without spine on inner posterior margin; posterior surface without robust setae.................................................... 8

8(7). Mesoscutum with transverse band of erect, pale-yellow hairs along anterior margin, rest of the body with integument and pubescence black ( Fig. 32, 33, 34 )........................ C. aethiops Cresson

— Mesoscutum without transverse band of erect, pale-yellow hairs along anterior margin, rest of the body with integument and pubescence variable (yellow, amber, and/or black) ( Fig. 4 , 13, 14 , 58, 59 ).... 9

9(8). T2–T3 amber ( Fig. 58 ); hind leg with black hairs only on metabasitarsus, otherwise with yellow hairs ( Fig. 59 )............................................................. C. tarsata F. Smith

— T2–T3 not amber ( Fig. 4 , 13 ); hind leg with black hairs, not restricted to metabasitarsus ( Fig. 4 , 14 ).... 10

10(9). T2–T3 with complete yellow preapical transverse bands (T2 band medially interrupted in some specimens) ( Fig. 13 , 18 )....................................... C. taina Genaro and Breto , n. sp.

— T2–T3 dark metallic blue, without yellow preapical transverse bands ( Fig. 4 ).... C. poecila Lepeletier

Figures

Figures 37–43. Centris cornuta. Female. 37) Head in frontal view. 38) Head semi-lateral view. 39) Basitibial plate. 40) Pygidial plate. Male. 41) Head in frontal view. 42) Dorsal habitus. 43) Basitarsus with sender process along inner posterior margin (encircle).

Figures 44–46. Centris cornuta female holotype. 44) Dorsal habitus. 45) Lateral habitus. 46) Frontal habitus.

Figures 1–7. Centris poecila. Head in frontal view. 1) Female.2) Male. 3) Dorsal habitus of female. 4) Male visiting flowers of Melochia spicata, Malvaceae, San Diego de los Baños, Pinar del Río (photo D. Breto). 5) Female visiting flowers of Mascagnia sp., Malpighiaceae, Guantánamo (photo courtesy of W. Fidler). Female. 6) Basitibial plate. 7) Pygidial plate.

Figures 10–15. Centris taina new species. Female.10) Dorsal habitus.11) Lateral habitus. 12) Head in frontal view. Male.13) Dorsal habitus. 14) Lateral habitus. 15) Head in frontal view.

Figures 29–31. Centris aethiops female. 29) Dorsal habitus. 30) Lateral habitus. 31) Head in frontal view.

Figures 49–51. Centris fulviventris female holotype. 49) Lateral habitus. 50) Dorsal habitus. 51) Head in frontal view.

Figures 53–59. Centris tarsata. Female. 53) Dorsal habitus. 54) Lateral habitus. 55) Head in frontal view. 56) Basitibial plate. Male. 57) Head in frontal view. 58) Dorsal habitus. 59) Lateral habitus.

Figures 16–19. Centris species. C. taina n. sp., female. 16) Basitibial plate. 17) Pygidial plate. 18) C. taina n. sp., male, at flowers of Bonellia sp., Primulaceae, Guantánamo, Cuba (photo courtesy of W. Fidler). 19) Centris sp. male, visiting flowers of Lippia sp., Verbenaceae, Altamira, Puerto Plata, Dominican Republic (photo courtesy of L. Johnson).

Figures 32–34. Centris armillatus male holotype. 32) Dorsal habitus. 33) Lateral habitus. 34) Frontal habitus.