Rhinetula denticrus Friese, 1922

Gonçalves, Rodrigo B. & Melo, Gabriel A. R., 2006, Notes on the Neotropical bee genera Agapostemonoides Roberts & Brooks and Rhinetula Friese, with description of a new species of Agapostemonoides (Hymenoptera, Apidae, Halictinae), Zootaxa 1136, pp. 39-48 : 45-46

Rhinetula denticrus Friese, 1922

( Figs. 4, 6 , 10 , 12–14 , 19 )

Rhinetula denticrus Friese, 1922: 583 . Lectotype male, designated by Roberts & Brooks (1987), Costa Rica: San Carlos (ZMHB, not examined).

Rhinetula denticrus ; Roberts & Brooks, 1987 (in part).

Comments

Friese (1922) distinguished R. denticrus from R. rufiventris mainly on color differences. In their figure 11, Roberts & Brooks (1987) also called attention to the color differences between what they considered Central American and Peruvian forms of R. dentricus . Considering the significant structural differences between these two ‘forms’, presented in the above key, the synonymy proposed by Roberts & Brooks (1987) is unjustified.

Male diagnosis

Head erect pubescence dark brown. Clypeus with conspicuous longitudinal striae; supraclypeal area with strong transverse striae which extend across the middle. Legs and terga dark brown, with some portions amber. Hind leg with ventral femoral tooth long and acute. Erect setae on T4­T6 dark brown, decumbent hairs relatively sparse and not entirely covering the terga. S7–8 and genitalia as in Figs. 10 and 12–14 , respectively.

Material examined

Five males, all from Panama ( DZUP): “PANAMA—Canal Zone\ Barro Colorado Is.\ 8­IV­63 No. 2853\ CW & ME Rettenmeyer”, 1 female with same data except “ 21­IV­63 No.”, 1 female with same data except “ 22­IV­63 No”, 2 females with same data except “ 22­III­63 No” “Taken at\ light\ Time: 6:00–6:15 a.m.”, 3 females and 1 male with same data except “ 1­IV­63 No” “Taken at\ light\ Time: 5:45–6:00 a.m.”.

Figures

FIGURES 1 – 7. 1, Anterior portion of metasoma of Agapostemonoides hurdi (female from Darién, Panama), dorsal view. 2, Same, A. weyrauchi sp. nov. (female from Puerto Villa, Bolivia). 3, Detail of head of A. weyrauchi (male from Puerto Villa, Bolivia); arrow pointing to lamellate dorsal portion of occipital carina. 4, Clypeus and supraclypeal area of Rhinetula denticrus (male from Barro Colorado, Panama). 5, Same, R. rufiventris (male from Tingo Maria, Peru). 6, Hind tibia and basitarsus of R. denticrus (same specimen of fig. 4). 7, Same, R. rufiventris (male from Rurrenabaque, Bolivia). Figs. 1 & 2, 4 & 5, 6 & 7, respectively, at same scale. Scale bars: 0.5 mm.

FIGURES 8 – 11. Male S 7 and S 8, ventral view. 8, Agapostemonoides hurdi (from Darién, Panama). 9, A. weyrauchi (from Puerto Villa, Bolivia). 10, Rhinetula denticrus (from Barro Colorado, Panama). 11, R. rufventris (from Tingo Maria, Peru). All figures at same scale. Scale bar: 0.5 mm.

FIGURES 12 – 17. Male genitalia. 12, Rhinetula denticrus (from Barro Colorado, Panamá), lateral view. 13, Same, ventral view. 14, Same, dorsal view. 15, R. rufiventris (from Tingo Maria, Peru), lateral view. 16, Same, ventral view. 17, Same, dorsal view. All figures at same scale. Scale bars:

FIGURES 18 – 19. Distribution maps. 18, Agapostemonoides hurdi and A. weyrauchi sp. nov. 19, Rhinetula denticrus and R. rufiventris.