90 American Midland Naturalist Monograph No. 3 



Keys to the Species 



adult females 



1. Scales of anterior pronotal lobe silvery-white; hind tarsal segments basaliy 



streaked with while on under side (breeds in bromeliads) 



vanduzeei D. and K., p. 96 



Scales of anterior pronotal lobe dark, with purplish reflection; hind tarsal seg- 

 ments either basaliy streaked with white on under side or entirely dark 2 



2. Hind tarsal segments entirely dark (breeds in pitcher plants) smlthii (Coq.), p. 91 



Hind tarsal segments (at least I to 3) each with a basal streak or spot of white 



scales on under side (breeds in bromeliads) mitchellii (Theob.), p. 90 



MALE TERMINALIA 



1. Basal stem-like portion of dististyle slender, longer than the apical capitate portion 



- mitchellii (Theob.), p. 92 



Basal stem-like portion of dististyle stout, shorter than the apical capitate portion 

 - 2 



2. The branches of the capitate head about equal in length 



vanduzeei D. and K., p. 97 



The branches of the capitate head not equal in length, the outer being much 

 shorter smilhii (Coq.), p. 94 



LARVAE (fourth INSTAR) 



1. Lower head hair (B) double, upper head hair (C) multiple; ventro-lateral tufts 



of anal segment short, each with about 12 subequal branches 



- mitchellii (Theob.), p. 93 



Lower and upper head hairs (B and C) single; ventro-lateral tufts of anal seg- 

 ment each about 3 to 6-branched 2 



2. Siphon 4 or 5:1, with long single hairs on all asjaects; ventro-lateral tufts of anal 



segment each with 2 or 3 long branches smiihii (Coq.), p. 96 



Siphon about 6:1, with several of the hairs double or triple; ventro-lateral tufts 



of anal segment each with 1 or 2 long and 3 or 4 shorter branches 



Vanduzeei D. and K., p. 97 



Wyeomyia (Wyeomyia) mitchellii (Theobald) 



Dendrom'^ia mitchellii Theobald, 1905, Mosq. or Cul. of Jamaica, 37. 

 W^peompia {Wyeomyia) mitchellii Lane and Cerqueira, 1942, Arq. de Zool., 3:556 

 (synonymy given). 



ADULT FEMALE. — Very small species. Head: Proboscis long, black; palpi 

 very short, dark. Occiput clothed dorsally with dark broad flat scales with 

 metallic blue-green reflection; the vertex with broad silvery-white scales. 

 Thorax: Anterior pronotal lobe covered with broad appressed dark violaceous 

 scales; scales of posterior pronotum, pleurae and coxae broad, appressed, 

 silvery white, often faintly tinted with blue. Scutum densely matted with 

 large elliptical dark scales, appearing brown to metallic blue-green in different 

 lights. Abdomen: Abdomen usually somewhat laterally compressed, the dor- 

 sum dark and the venter yellowish-white to silvery white, the dark and white 

 scales separated laterally in a straight longitudinal line; the scales of the dor- 

 sum dark brown with coppery to metallic blue-green reflection. Legs: Knee 

 spots absent. Femora and tibiae dark scaled on outer surfaces, with metallic 

 blue-green reflection, the inner surfaces largely pale. Fore-tarsus entirely dark; 



