Leurotrigona Moure

Pedro, Silvia R. M. & Camargo, João M. F., 2009, Neotropical Meliponini: the genus Leurotrigona Moure — two new species (Hymenoptera: Apidae, Apinae), Zootaxa 1983, pp. 23-44 : 26

Key to the species of Leurotrigona Moure

1 Smaller bees, head width 0.79–0.88 mm. Workers with short malar space, as long as diameter of fl.3; integument of upper gena with fine tessellation; clypeus with simple, unbranched hairs ( Figs. 1, 4 ); posterior margin of tibia III sinuous, posterior parapenicillum markedly sinuous, S-shaped ( Figs. 2, 5 ). SVI of male with broad, hairy and concave area medially ( Figs. 6 , 11 ); projection of SVII simple and pointed ( Figs. 7 , 12 ) ......................................................... 2

- Larger bees, head width 1.01–1.20 mm. Workers with long malar space, as long as 2x the diameter of fl.3; integument of upper gena smooth, devoid of tessellation; clypeus with silvery gray scale-like branched hairs ( Figs. 16, 18 ); posterior margin of tibia III slightly arched; posterior parapenicillum curved, not S-shaped ( Figs. 17, 20 ). SVI of male with deeply emarginated area medially ( Fig. 21 ); median projection of SVII broadened and deeply emarginated apically ( Fig. 22 ) (only the male of L. muelleri known)............................................................................................... 3

2 Pubescence of clypeus and lower parocular area of workers relatively dense and long; in discal area of clypeus, piligerous points separated by distance shorter than hair length; some long branched hairs on juxtaclypeal area ( Fig. 1 ). SVI of male with broad, hairy medial area deeply concave ( Fig. 6 ); median projection of SVII slender and Yshaped ( Fig. 7 ). Antioquia, Colombia ( Fig. 26 ) ............................................................. Leurotrigona crispula sp. nov.

- Pubescence of clypeus and lower parocular area of workers short and sparse; in discal area of clypeus, piligerous points separated by distance about as long as hair length; only simple hairs or very shortly branched hairs on juxtaclypeal area ( Fig. 4 ). SVI of male with broad, hairy medial area slightly concave ( Fig. 11 ); median projection of SVII broader and V-shaped ( Fig. 12 ). French Guiana, western Amazon, Brazil to Peru ( Fig. 26 ) ................................ .......................................................................................................................................... L. pusilla Moure & Camargo

3 Silvery gray scale-like hairs of clypeus and parocular area of workers slightly broadened, some of them shortly branched, not reaching frons ( Fig. 16 ); pubescence on posterior region of propodeal spiracle sparse and simple, reaching halfway or less toward base of coxa III. Male unknown. Western Amazon, Brazil ( Fig. 26 ) ......................... ........................................................................................................................................ Leurotrigona gracilis sp. nov.

- Silvery gray scale-like hairs of clypeus and parocular area of workers, broadened, branched, up to frons ( Fig. 18 ); pubescence on posterior region of propodeal spiracle dense and plumose, reaching about 2/3 of the distance toward base of coxa III. Genitalia and pre-genital sterna of male as in figures 21–25. Santa Catarina to Paraíba, Brazil, on west to Madre de Dios, Peru ( Fig. 26 ) ............................................................................................ L. muelleri (Friese)

Figures

FIGURE 26. Leurotrigona, geographic records. The arrow indicates L. crispula sp. nov.

FIGURES 1 – 5. Leurotrigona crispula sp. nov., Puerto Triunfo, Antioquia, Colombia: 1, head and detail of the clypeus vestiture, worker; 2, tibia III, worker; 3, head, male. Leurotrigona pusilla Moure & Camargo, paratype, Manaus, AM, Brazil: 4, head and detail of the clypeus vestiture, worker; 5, tibia III, worker. Scales = 0.02 mm.

FIGURES 6 – 10. Leurotrigona crispula sp. nov., male, Puerto Triunfo, Antioquia, Colombia: 6, sternum VI; 7, sternum VII; 8, sternum VIII; 9, genitalia, dorsal view; 10, genitalia, ventral view. Scale = 0.2 mm.

FIGURES 11 – 15. Leurotrigona pusilla Moure & Camargo, male, Foz do Rio Curicuriari, Rio Negro, AM, Brazil: 11, sternum VI; 12, sternum VII; 13, sternum VIII; 14, genitalia, dorsal view; 15, genitalia, ventral view. Scale = 0.2 mm.

FIGURES 16 – 20. Leurotrigona gracilis sp. nov.: 16, head and detail of the clypeus vestiture, worker, Plano, Rio Negro, AM, Brazil; 17, tibia III, worker, Camanaus, Rio Negro, AM, Brazil. Leurotrigona muelleri (Friese): 18, head and detail of the clypeus vestiture, worker, Teodoro Sampaio, Parque Estadual Morro do Diabo, SP, Brazil; 19, head, male, Cajuru, SP, Brazil; 20, tibia III, worker, Teodoro Sampaio, Parque Estadual Morro do Diabo, SP, Brazil; Scales = 0.02 mm.

FIGURES 21 – 25. Leurotrigona muelleri (Friese), male, Cajuru, SP, Brazil: 21, sternum VI; 22, sternum VII; 23, sternum VIII; 24, genitalia, dorsal view; 25, genitalia, ventral view. Scale = 0.2 mm.