36 M. W. NIELSON 



8 (6) Small, slender species, length less than 5 mm; clypeus with short median 



longitudinal carina, terminating near antennal fossa; style not clawed 

 apically (Text-figs 123, 128); plate bulbous apically (Text-figs 120, 125) . 9 



Medium size species, length over 5 mm; clypeus with long median longitudinal 

 carina, reaching nearly to transclypeal sulcus; style clawed apically (Text-fig. 

 118); plate nearly elliptical (Text-fig. 112) . . .maculiceps (Walker) (p. 50) 



9 (8) Pygofer process with fine diagonal striations apically (Text-fig. 119); dorsal 



appendage of aedeagus with short, sharp, lateral apical processes (Text-figs 



121, 122) ......... knighti sp. n. (p. 53) 



— Pygofer process with longitudinal striations apically, apex appearing segmented 



(Text-fig. 124); dorsal appendage of aedeagus with subapical ventral flange 

 (Text-figs 126, 127) . . . . . . ventriosa sp. n. (p. 55) 



10 (5) Pygofer process with secondary processes or appendages (Text-figs 129, 134) . n 



— Pygofer process single, without secondary processes or appendages (Text-figs 



159, 164) ... 16 



ii (10) Aedeagus with spines or processes on dorsal appendage (Text-figs 136, 141, 



146); plate with terminal segment elongate (Text-figs 135, 140) ... 12 



— Aedeagus without spines or processes (Text -fig. 131); plate with terminal 



segment quadrate (Text-fig. 130) .... picta (Montrouzier) (p. 56) 



12 (11) Pygofer process with single subbasal or apical secondary appendage (Text-figs 



139, 149) ... . 13 



— Pygofer process with two secondary appendages (Text-fig. 134) 



spinulata sp. n. (p. 58) 



13 (12) Pygofer process with subbasal appendage (Text-figs 139, 144) . ... 14 



Pygofer process with subapical appendage (Text-figs 149, 154) . . . 15 



14 (13) Aedeagus with one pair of spines, spines subapical on dorsal margin of dorsal 



appendage (Text-figs 141, 142) .... biclades sp. n. (p. 60) 



— Aedeagus with two pairs of spines and a prominent lateral flange, spines 



lateral and dorsal on dorsal appendage (Text-figs 146, 147) 



bicornipes sp. n. (p. 61) 



15 (13) Aedeagus with one pair of lateral subapical spines and a lateral row of short 



teeth apically on dorsal appendage (Text-figs 151, 152) . insoluta sp. n. (p. 62) 



— Aedeagus with two pairs of lateral spines, one pair subapical, the other 



subbasal on dorsal appendage (Text-figs 156, 158) . . area sp. n. (p. 64) 



16 (10) Aedeagus with spines or flanges (Text-figs 161, 203) ..... 17 



— Aedeagus without spines or flanges (Text-figs 316, 321) .... 47 



17 (16) Aedeagus with a flange only on dorsal or ventral appendage (Text-figs 166, 171) . 18 



— Aedeagus with spines only or with spines and flanges on dorsal or ventral 



appendages, or on stem of aedeagus (Text-figs 203, 246, 296) ... 24 



18 (17) Plate with distal segment subquadrate (Text-fig. 160) .... 19 



— Plate with distal segment elongate (Text-fig. 170) ..... 20 



19 (18) Aedeagus with ventral appendage needle-like, dorsal appendage with lateral 



apical flange (Text-fig. 161) . . . . solomonensis sp. n. (p. 66) 



— Aedeagus with ventral appendage tube-like, dorsal appendage with dorsal, 



basal, semicircular flange (Text-fig. 166) . . . robusta sp. n. (p. 68) 



20 (18) Aedeagus with flange on dorsal appendage (Text-fig. 176) .... 21 



— Aedeagus with flange on ventral appendage, flange keeled (Text-fig. 171) 



doni sp. n. (p. 70) 



21 (20) Dorsal appendage of aedeagus narrowed apically in lateral aspect, flange 



lateral and subapical (Text-figs 187, 192) ...... 22 



— Dorsal appendage of aedeagus very broad apically in lateral aspect, flange 



ventral and subbasal (Text-fig. 176) .... grandis sp. n. (p. 71) 



22 (21) Pygofer process sharply attenuated apically (Text-figs 184, 189) ... 23 



— Pygofer process aperturized apically (Text-fig. 179) . . vesca sp. n. (p. 73) 



