342 AGRICULTURAL EXPERLMENT STATION. 



The resemblance to- Anopheles with a long breathing tube is 

 SO' strong that I could scarcely persuade myself when I first saw 

 the larva that it did not belong to that genus. 



WYEOMYIA SMITHII^ COQ. 



The Pitcher Plant Mosquito. 



A small black mosquito with the abdomen, legs and proboscis 

 unhanded, and the wings unspotted. The whole under surface, 

 including the sides of the thorax and part of the under side of 

 the legs is yellowish or silvery white, strongly in contrast with 

 the black upper side. 



Description of the Adult. 



This mosquito is very small, measuring, exclusive of the beak, 

 3 mm., or .12 of an inch in length. The proboscis is compara- 

 tively very long, being two-thirds the length of the body; it is 

 black in color, slender and slightly swollen at the apex. The 

 head and eyes are jet black above; beneath are silvery white 

 scales which extend up the posterior border of the eyes and ap- 

 proach slightly on the dorsal part ; there is a very small patch of 

 similar scales on the anterior part of the head in the angle formed 

 by the eyes. Rarely these scales are diffused and form an indis- 

 tinct border to the posterior margin of the eyes. The palpi are 

 short in both sexes (fig. io8, 2, 3), shortest in the male, and 

 are composed of three segments each, the apical one long, the 

 basal ones small with weak sutures; they are brownish black in 

 color, sparsely set with bristles, one directly on the apex, and 

 the scales do not cover the surface densely. The antennae are 

 fourteen jointed, precisely the same in both male and female, 

 the penultimate joint slightly longer and the apical one twice as 

 long as the others. They are almost black, pale at the base and 

 set with basal whorls of long bristles which become gradually 

 shorter toward the apex. 



The thorax is evenly blackish brown, rather sparsely covered 

 with short concolorous hair and occasionally grayish scales are 

 diffused over the surface or collected into irregular stripes. The 

 pleura are pale brown with several small patches of silvery 

 white scales and one small patch of bright violaceous ones in 

 the anterior angle. The legs are black, with the under side of the 

 femora and tibiae light yellow, the tarsi black with brassy yellow 



