Atrichopogon

Felippe-Bauer, Maria Luiza, Silva, Tiago Do Nascimento Da & Alves, João Ricardo Carreira, 2012, Two new species of Atrichopogon Kieffer from Rio de Janeiro, Brazil (Diptera: Ceratopogonidae), Zootaxa 3566, pp. 39-50 : 40

Key to males of Neotropical Atrichopogon with pigmented wings

1. Wing with distinct pigmentation ( Figs. 1 , 15 )............................................................... 2

- Wing without any distinct spots of pigmentation; some with discrete gradients of pigmentation ( Fig. 29)...................................................................................................... other Atrichopogon

2. Wing with two transverse darker bands, one straddling the r-m to CuA2 and other covering the distal 1/3 of the wing ( Figs. 15 )..................................................................................................... 3

- Wing with two distinct, darker spots, one over r-m and the other in cell r3 posterior to apex of R3 ( Fig. 1 )................ 4

3. Distal 1/3 of the wing entirely in dark band; gonostylus thick for most of length with two pointed apical prongs ( Fig. 33 )....................................................................................... maculipennis Clastrier

- Distal 1/3 of the wing with two ovoid pale spots, one subapically in r3 and other on apical portion of m1 and m2 ( Figs. 15 ); gono- stylus progressively tapering and curved, bearing pointed apex ( Figs. 20 , 24 )............... cavus Felippe-Bauer sp. nov.

4. Eyes meeting medially, by a length of 2–3 ommatidia; posterior margin of tergite 9 with a small median lobe ( Fig. 32 ).................................................................................... clastrieri Spinelli & Marino

- Eyes meeting medially, by a length of 4–6 ommatidia; posterior margin of tergite 9 various.......................... 5

5. Gonostylus split to or near base ( Fig. 9 , 31, 35 ).............................................................. 6

- Gonostylus undivided ( Fig. 24 , 30, 32, 34 )................................................................. 8

6. Inner projection of the gonostylus without articulation with the main portion ( Fig. 35 )............... pictipennis Clastrier

- Inner projection of the gonostylus articulated with the main portion ( Fig. 9 , 31 )................................... 7

7. Posterior margin of tergite 9 elongate as a setose finger-like process, greatly surpassing apex of gonocoxite; sternite 9 with transverse row of setae ( Fig. 9 ).................................................. dactilus Felippe-Bauer sp. nov.

- Posterior margin of tergite 9 rounded, not surpassing apex of gonocoxite; sternite 9 with lateral group of scattered setae ( Fig. 31 ).......................................................................... casali Cavalieri & Chiossone

8. Posterior margin of tergite 9 bifid; posterior margin of sternite 9 strongly concave forming two lobes with lateral group of scat- tered setae; gonostylus tapering and curved bearing pointed apex ( Fig. 30 )................... bicuspis Borkent & Picado

- Posterior margin of tergite 9 rounded, posterior margin of sternite 9 without lobes, with middle row of setae; gonostylus thick for most of length with rounded apex ( Fig. 34 )............................................ ornatipennis Clastrier

Figures

FIGURE 9. Terminalia of Atrichopogon dactilus sp. nov., ventral view. Aedeagal-parameral complex and gonostylus in dissected view. Scale bar: 0.1 mm.

FIGURE 24. Terminalia of Atrichopogon cavus sp. nov., ventral view, aedeagal-parameral complex removed. Aedeagalparameral complex in dissected view. Scale bar: 0.1 mm.

FIGURES 1 – 2. Wing photographs of Atrichopogon dactilus sp. nov. 1. male; 2. female.

FIGURES 15 – 16. Wing photographs of Atrichopogon cavus sp. nov. 15. male; 16. female.

FIGURE 30 – 35. Terminalia of Atrichopogon, ventral view; aedeagal-parameral complex removed. 30. A. bicuspis Borkent & Picado; 31. A. casali Cavalieri & Chiossone; 32. A. clastrieri Spinelli & Marino; 33. A. maculipennis Clastrier; 34. A. ornatipennis Clastrier; 35. A. pictipennis Clastrier. (Redrawed from Borkent & Picado, 2004: 54; Clastrier, 1968: 91, 1979: 31, 1987: 273; Spinelli & Marino, 2007: 205, 207).

FIGURES 17 – 23. Atrichopogon cavus sp. nov., male. 17. Antenna; 18. Dorsal portion of head capsule, anterior view; 19. Palpus, lateral view; 20. Terminalia; 21. Abdomen, ventral view; 22. Legs (left to right) of hind, mid- and forelegs, lateral view; 23. Scutum, dorsal view.