MOSQUITO BIOLOGY 139 



rather far out. Lateral comb of eighth segment of a very few scales in 

 a line ; single scale elliptical, fringed with short spinules and with one 

 very long stout terminal spinule. Anal segment longer than wide, ringed 

 by the plate ; dorsal tuft a pair of long hairs on each side ; ventral 

 brush well developed, confined by the plate ; anal gills moderate, 

 tapered. 



"The larvae appear in the early spring, hatching from the over- 

 wintering eggs. There is but a single annual generation. The larvae 

 occur mixed with the other early spring species in woodland pools and 

 marshes, often when ice is still present. Mr. Knab and Dr. Dyar col- 

 lected nearly fully grown larvae from a marsh by standing upon ice at 

 its edges and dipping under the ice, where the larvae had taken refuge. 

 The females live for two or three months in the woods, and soon be- 

 come much worn, being then indistinguishable from other species of 

 Aedes with similar habits." 



A edes atlanticusT>Y HT SindY^nd}^ 

 The Silver -Striped Mosquito 



DISTRIBUTION AND CHARACTERIZATION 



[Southern Atlantic States. In New Jersey no specimens have been 

 trapped.] 



Moderate sized black mosquito, characterized by broad silvery gray 

 stripe through center of thorax. Legs and beak unhanded, wings un- 

 spotted, abdomen black, with lateral white marks which partly show on 

 dorsum of apical segments. 



DESCRIPTION OF THE ADULT 



Ordinary build, 5-6 mm. (.20-.24< inch) long, exclusive of beak; 

 head brown, with large patch of white scales in center of occiput ex- 

 tending between eyes, which have faint whitish border on posterior mar- 

 gin. Proboscis black throughout, one-third length of body, or about 2 

 mm. long. Female palpus normal in form, black, terminal joint ob- 

 solete; in male black, shape and fans as in ^. canadensis, longer than 

 proboscis by last joint. Antennae in both sexes very dark brown, basal 

 joint in female yellowish, plumes in male light brown. 



Thorax black with longitudinal silvery gray stripe in center of dor- 

 sum, which narrows somewhat toward front, has sharpl}'^ defined edges 

 and does not quite reach anterior margin. Pleura light brown, be- 

 coming very pale beneath, and have small patches of white scales. Legs 



