634 



AN INRTODUCTION TO ENTOMOLOGY 



Family HELIODINID^ 



The hind wings are narrow-lanceolate and pointed or linear and 

 much narrower than their fringe. The maxillary palpi are minute 

 and porrect. The labial palpi are very short and drooping. The 

 maxillae are strong. The tarsi are armed with more or less distinct 

 whorls of bristles; the tibiee are also often armed with stiff bristles. 

 Usually when at rest the imago holds the posterior pair of legs ele- 

 vated at the sides above the wings. 



The larvae are not well-known; those that have been described are 

 of various habits. 



Cycloplasis panicijoliella. — The larva of this species mines in grass, 

 Panicum clandestinum. Its mine is at first a long thread-like line; 

 towards the latter part of the life of the larva it is enlarged into a 

 blotch. When the larva has reached maturity, it cuts a perfectly 

 circular disk from the upper cuticle of the leaf, folds it along its di- 

 ameter and unites the edges of the circumference, so as to make a 

 semicircle. When completed the larva, enclosed in its semicircular 

 cocoon, lets itself fall to the ground, where it attaches the cocoon to 

 some adjacent object. (Clemens). 



Schreckensteinia erythriella. — The larva feeds on sumac bobs. It 



is common; the body is uniform dark green, but the frass is scarlet. 



When full-grown it makes a lace-like cocoon on the outside of the bob. 



Schreckensteinia Jestaliella. — ^The larva of this species is an external 



feeder on Rubus; it is 

 spiny, and when full- 

 grown makes a lace- 

 like cocoon. 



Euclemensia basset- 

 tella. — The larva is an 

 internal parasite in the 

 gall-like females of the 

 coccid genus Kernies. 

 The adult is a beauti- 

 ful greenish-black 

 moth, which has its 

 fore wings marked 



Fig. 776. — Euclemensia bassettella. 



with reddish orange (Fig. 776). 



The genus Euclemensia is placed in this family provisionally. 



Family ^GERIID^ 



The Clear-winged Moths 



The clear-winged moths constitute a very remarK- 

 able family, many of them resembling bees or wasps 

 in appearance more than they do ordinary moths, a 

 resemblance due to their clear wings and in some cases to their bright 

 colors (Fig. 777). There are a few moths in other families, as the 



Fig. 777. 



