>78 



AGRICULTURAL EXPERIMENT STATION. 



IS black, with lateral white marks which partly show on the 

 <lorsnm of the apical seo-ments. 



Description of the Adult. 



This is a mosquito of ordinary build, measuring 5-6 mm. = 

 ^20-.24 of an inch in length, exclusive of the beak. The head is 

 brown, with a large patch of white scales in the center of the 

 occiput extending between the eyes, to which there is a faint 

 whitish border on the posterior margin. The proboscis is black 

 throughout, one-third the length of the body, or about 2 mm. 

 long. The female palpus is normal in form, black, the terminal 

 joint obsolete ; in the male it is black, shape and fans as in C. cana- 



Culcx serratiis: 

 (Original.) 



I, anterior; 



Figure 85. 



2, middle, and 3, posterior claws of male: enlarged. 



densis, longer than the proboscis by the last joint. The antennae 

 in both sexes are very dark brown, the basal joint in the female 

 jellowish, the plumes in the male light brown. 



The thorax is black, with a longitudinal silvery gray stripe in 

 the center of the dorsum, which narrows somewhat toward the 

 front, has sharply defined edges and does not quite reach the 

 anterior margin. The pleura are light brown, becoming, very 

 pale beneath, and have small patches of white scales. The legs 

 are black, with deep blue reflections, the under sides of the tibiae 

 yellowish, while on the femora they are creamy white. The claws 

 of the male anterior and mid tarsal joints (fig. 85, i and 3) are 

 unequal in length, the larger with a median and basal tooth, the 

 smaller with a single tooth near the base. On the posterior tarsal 

 joint (fig. 85, 3) the claws are equal, each with a single tooth 

 a. short distance from the base. In the female the claws are alike 



