132 American Midland Naturalist Monograph No. 3 



10. Pale knee spots present; palpus less than 1/3 as long as proboscis, with seg- 

 ment 4 about equal in length to the first three segments combined 



borrida (D. and K.), p. 145 



Pale knee spots absent; palpus a little more than 1/3 as long as proboscis, with 

 segment 4 more than 1 1/2 times as long as the first three segments combined.... 

 longipalpis Roth, p. 1 47 



MALE TERMINALIA 



1. Apical half of phallosome with a pair of submedian longitudinal toothed ridges 



dorsally and a pair of thorn-like projections laterally 2 



Phallosome cylindrical or conical, without teeth or lateral thorn-like projections 3 



2. Dististyle stout, with a very large lateral hatchet-shaped lobe projecting mesad 



horvardii Coq., p. 137 



Dististyle slender, with a small dorsal angular projection at distal fifth 



ciliala (Fabr.), p. 134 



3. Phallosome conical, the apical half with a lateral flange and a mid-dorsal 



basally divaricated carina; crown of claspette with about nine elongated flat- 

 tened pointed filaments and several feathered setae c^anescens (Coq.), p. 139 



Phallosome conical or cylindrical, without a lateral flange or divaricated carina; 

 crown of claspette not as above 4 



4. Dististyle broadly truncate at apex; claw of dististyle inserted subapically 



varipes (Coq.), p. 151 



Dististyle not truncate at apex; claw of dististyle inserted apically 5 



5. Basistyle large, subsphencal, about l'/2 times as long as wide; dististyle con- 



stricted basally, strongly swollen and rounded apically longi^alpis Roth, p. 148 



Basistyle at least twice as long as broad, cylindrical ; dististyle tapered apically 

 to a narrow tip 6 



6. Claspette slender, about % as long as basistyle, with two contorted pointed leaf- 



like filaments at tip and numerous feathered setae on inner margin of apical 



fourth ferox (Humb.), p. 142 



horrlda (D. and K.), p. 145 

 Claspette stem slender, expanded into a broad crown apically, not extending 

 beyond middle of basistyle; crown bearing 5 to 7 narrow pointed blades or 

 setae 7 



7. Dististyle expanded beyond middle, broadest al apical third 



p\)gmaea (Theob.), p. 161 



Dististyle broadest at middle 8 



8. Clasp>ette with about 5 or 6 seta-like filaments on crown 



signipennis (Coq.), p. 164 



Claspette with 5 to 7 long pointed apically feathered blades and a single apical- 

 ly feathered seta 9 



9. Inner ventral margin of each plate of phallosome with a distinct triangular pro- 



jection turned ventro-laterally ; claspette bearing 5 or 6 blades and a single 



apically feathered seta discolor (Coq.), p. 159 



Inner ventral margin of each plate of phallosome with only a narrow rounded 

 portion turned ventrad, lacking a distinct triangular projection; claspette bear- 

 ing 6 or 7 blades and a single apically feathered seta 



confinnis (L. Arr.), p. 154 



LARVAE (fourth INSTAr) 



I.Pecten teeth numerous (about 18 or more), each terminating in a hair-like fila- 

 ment; subventral tuft of siphon represented by a long single hair; mouth 



brushes of very stout filaments strongly pectinate on one side 2 



Pecten teeth few (less than 10), not prolonged into hair-like filaments; sub- 

 ventral tuft of siphon multiple, either large, small or obsolete, never long and 



single; mouth brushes normal hair-like, smooth or very weakly pectinate 3 



2. Lateral hair of anal segment 3 or 4-branched near base ciliata (Fabr.), p. 135 



Lateral hair of anal segment single or forked beyond middle ....horvardii Coq., p. 138 



