272 
A Monograph of Culicidae. 
2. Wyeomyia pertinans. Williston. 
(Trans. Ent. Soc. Lond. 1896, p. 271.) 
Thorax brown, with dusky-brown scales on the mesonotum ; 
pleurae yellowish-brown with white scales; metanotum deep 
brown, with usually four large bristles in a straight line and 
some smaller ones between them, usually making from six to 
nine in all. Abdomen deep brown, with dusky-brown scales ; 
venter ochraceous. Legs deep brown; femora and tibiae 
yellowish vent rally. Ungues of 9 equal and simple. 
9 . Head yellowish-brown, with flat scales, ochraceous at the 
sides, purplish-brown in the middle; clypeus deep brown; 
antennae almost black, basal joint pale testaceous, pubescence 
pale; palpi black scaled ; proboscis covered with black scales, 
yellowish at the base owing to the absence of scales. 
Fig. 285. 
Wyeomyia pertinans, Williston. 
a, Wing (X. 20.) ; b, scutellum and metanotum. 
Thorax deep brown, with flat dusky-bronze scales over the 
mesonotum ; over the roots of the wings are long flat purplish- 
brown scales, and also over the sides of the scutellum, and to 
some extent over the middle lobe; pleurae yellowish-brown, 
with white scales ; scutellum brown, with four large bristles to 
the central lobe and others to the lateral lobes ; metanotum 
deep brown, with four large bristles arising from its apical half 
in a line, and some smaller ones, usually making from six to nine 
in all. 
Abdomen covered with dusky-brown scales above and with 
creamy scales below, on a yellow ground. 
Legs deep blackish-brown ; the base of the femora and coxae 
paler, of a yellowish tint, also the tibiae and femora on their 
ventral surfaces ; hind metatarsi longer than the tibiae ; ungues 
of the 9 equal and simple. 
