346 NEW YORK STATE MUSEUM 



CORETHEELLA Coq. 



This genus was erected for a peculiar species presenting charac- 

 ters similar to Sajomyia and Corethra, but differing from both in 

 having the antennae fully covered with hairs and the apical joint 

 shorter than the intermediate ones. The larva also presents differ- 

 ences from the ordinary culicid type. 



Corethrelia brakeleyi Coq. 



This species has been described by Mr Coquillett, as follows : 

 Dark brown, the antennae, halteres, knees and tarsi yellow; 

 plumosity of male antennae yellow, mesonotum opaque, gray 

 pruinose except three narrow vittae and a few spots near the 

 humeri, hairs of thorax brownish, those of the abdomen yellow, 

 tibiae and tarsi bearing many long hairs; first joint of front tarsi 

 slightly shorter than the iibia; wings whitish hyaline, marked with 

 a brown cross band near one third and two thirds its length, the 

 first one oblique, the second band produced triangularly near mid- 

 dle of its inner side, costal margin on each side of this band 

 strongly tinged with golden yellow, fringe white, marked with a 

 brown spot at posterior end of each cross band and on either side 

 of the extreme wing tip; length, 1.5 mm. 



The larva resembles that of Corethra much more more closely 

 than that of Sayomyia. This curious form is about % inch in 

 leng-th, light reddish in color and very hairy in appearance. The 

 head is broad and the body tapers gradually to the short, obtuse 

 anal siphon, giving it a somewhat triangular appearance. It dif- 

 fers from the former, according to Johannsen, in having the 

 antennae attached near the middle line of the head, at the extreme 

 anterior end, and hinged so that they move in a horizontal plane, 

 normally folding back against the side of the head. Dr Smith 

 states that there is no mouth brush, that the eyes are rounded, and 

 the abdominal hairs unequal. 



The pupa is brown in color, and floats upwardly to the surface 

 with the long, slender air tubes slightly projecting. The larva 

 and pupa have been minutely described by Johannsen. 



Habits and life history. This interesting culicid vvas discovered 

 by Mr J. Turner Brakeley at Lahaway N. J. in little pools near 

 thf" head of a swamp spring. The first captures were taken June 



