Ceratina

Mahlmann, Thiago, Oliveira, Favízia Freitas de & Oliveira, Marcio Luiz de, 2023, Taxonomy of South American species of Ceratina (Calloceratina) Cockerell, 1924 with comments on new species-groups proposed for this subgenus (Hymenoptera: Apidae: Xylocopinae), EntomoBrasilis (e 1062) 16, pp. 1062-1062 : 12

KEY TO THE SOUTH AMERICAN SPECIES OF CERATINA ( CALLOCERATINA )

1. Body sparsely punctated leaving large, polished spaces between punctures, especially on frons and vertex (distance between punctures approximately equal to or wider than 1 DO) ( Figs 5C , 7C ); ( silveirai species-group) ........................... 2

-. Body densely punctated, polished areas only on gena and disc of mesoscutum............................................................... 3

2. Metapostnotum finely reticulate, almost polished and with a weak median carina ( Figure 5D ); lower interocular distance much larger than upper, inner orbits of compound eyes diverging below giving the head a square aspect ( Figure 5C ) ............................. C. (Calloceratina) silveirai n. sp.

-. Metapostnotum finely reticulate ( Figure 7D ); inner orbits of compound eyes subparallel ( Figure 7C ) .................................. ................................................. C. (Calloceratina) mourei n. sp.

Figures

Figure 5. Holotype ♀ of Ceratina (Calloceratina) silveirai sp. n. (A) dorsal habitus; (B) lateral habitus; (C) head in frontal view; (D) metapostnotum in dorsal view. Scale bar = 5.0 mm. Credit T.Mahlmann.

Figure 7. Holotype ♀ of Ceratina (Calloceratina) mourei sp. n. (A) dorsal habitus; (B) lateral habitus; (C) head in frontal view; (D) metapostnotum in dorsal view. Scale bar = 5.0 mm. Credit T.Mahlmann.