Patara vanduzei BALL 

 (102 Can. Ent, xxxiv, p. 260) 



This, the only North American species, has been re- 

 corded only from New York, Pennsylvania and Ohio. 



General color brownish-purple, a light stripe on the vertex and 

 pronotum, and a light area around the apex of the elytra. In profile, 

 the vertex and frons forming a continuous semicircular curve, about 

 equally margining the eye all around; vertex extremely thin at apex, 

 expanded posteriorly, white. Frons and antennae brownish testaceous, 

 the latter long, broad, and flattened. Pronotum slightly carinate, 

 broad and nearly parallel margined, brownish fuscous, with a broad, 

 median light stripe. Scutellum light testaceous, with a pale stripe. 

 Elytra long, apically pointed, although roundedly so, brownish with 

 the venation red, giving the insect a brownish-purple appearance; 

 the three cross-veins before the apical cells fuscous; a light spot 

 on the apex of each apical vein and a larger one on the inner re- 

 flected one; the claval nervure tuberculate, white. Wings slightly 

 smoky hyaline, the venation reddish. Legs pale. 



Length of body 2 mm.; length to tip of elytra 4.75 mm.; elytra 

 expansion 8.5 mm. 



The food plant is not definitely known but is probably 

 a species of oak. 



THE GENUS CEDUSA FOWLER 



This is considered to be our most primitive form of the 

 Derbinae as the frons is relatively broad, the elytral vena- 

 tion simple, and the antennae are but slightly enlarged or 

 flattened. All are small, short, compact species and range 

 in color from fumose to black, more or less covered with 

 bluish-gray pruinosity. In Cedusa the lower margin of the 

 pronotum is without up-curved lamina, the lower part of 

 the antenna! trough being formed by a more or less scoop- 

 shaped process of the genal ridge. The only reliable char- 

 acters for separation of certain of the species are the male 

 genitalia. 



The following key has been partially adapted from 

 McAtee*. 



Key to some of the species of Cedusa. 



Elytra fuscous or black 1. 



Elytra white, clouded with fuscous in the areoles..maculata Van D. 

 1. Mesonotum and parts anterior chiefly fulvous, the elytra more 



or less dusky apically, fulvous towards base edentula Van D. 



122 



