408 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iis 



cc. Distal portion of parameres as long as wide basal portion and with 

 inner margin sharply concave. 



d. Basal plate shorter (.13) ; wide basal portion of paramera extending 



considerably beyond tip of endomera . . . acutifrons acutifrons 



(Id. Basal plate longer (.16); wide basal portion of paramera ending at 



tip of endomera acutifrons subsimilis 



bb. Endomera without prolongations on basal margins. 

 c. Basal margin of endomera concave. 



d. Paramera long, tapering gradually from base to tip (.11). 



e. Paramera straight on both sides; lateral carinae of basal plate 



swollen basally and with base concave lachrymosa 



ee. Paramera with distal half slightly concave on inner margin; 



carinae of basal plate not swollen basally . . hirsuta picirostris 



dd. Paramera shorter; basal portion wide; distal portion concave on 



inner margin and tapering abruptly from tip of endomera to short, 



slender tip hirsuta hirsuta 



cc. Basal margin of endomera strongly convex; wide basal portion of 

 paramera extends far beyond tip of endomera, with slender tip short 



and concave on inner margin cephalosa 



aa. Distal portion of paramera slender and more or less incurved. 



b. Wide basal portion of paramera twice the length of ^ort, slender curving 



tip certhia colombiana 



hb. Basal portion of paramera never twice the length of slender curving tip. 



c. Basal plate much narrower at distal end than at base; wide basal 



portion of paramera concave on outer margin and extending beyond 



the tip of endomera certhia microgenitalia 



cc. Basal plate wider at distal end than at base. 



d. Basal plate expanded at distal end; paramera rather slender basally, 

 and with long, slender, slightly incurving tips longer than the wide 



basal portion triangularis 



dd. Basal plate not wider at distal end than at base. 



e. Basal plate equal in length with paramera; sides straight. 



longifrons 



ee. Basal plate considerably longer than paramera; wide basal 



portion of paramera about equal in length to slender, curving tips. 



certhia certhia 

 aaa. Paramera more or less straight, but with undulating outer and inner margins 

 which are edged with blackish; endomera large, expanded laterally in me- 

 dian portion fuliginosa antioquensis 



Key to Known Females of Fumaricola 



(Length of head does not include hyaline tip of frons) 



A. Head at least .05 mm. longer than wide at temples. 



a. Head .075 mm. or more, longer than wide at temples. 



b. Lateral spines on VIII long and slender; not more than 1 long and 3 

 short setae back of spines. 



c. Pterothorax narrow (.30), with lateral margins but slightly divergent 

 and straight, or almost so (never strongly convex) ; head with lateral 

 margins straight from temples to frons; anterior plate extending 

 beyond tips of preantennary carinae. 



d. Head: .466X.36 acutifrons acutifrons 



dd. Head: .435X.35 parvigenitalis 



