LEPIDOPTERA 



593 



suborder Jugatse, the venation of the hind wings closely resembles 

 that of the fore wings (Fig. 719). But these insects differ from all 



Fig. 719. — Wings of Micropteryx. 



other Lepidoptera in having in the adult instar well-developed func- 

 tional mandibles, and in that the females lack a bursa copulatrix. 

 Chapman ('17) regards the presence of well-developed mandibles and 

 the absence of a bursa copulatrix of sufficient importance to warrant 

 the removal of these insects from the Lepidoptera and the establish- 

 ment of a distinct order for them ; for this order he proposed the name 

 Zeugloptera. 



Tillyard ('19) states that the wing-coupling apparatus in this 

 family functions differently from that of the following family, in that 

 in the Micropterygidce the jugal lobe is bent under the fore wing and 

 acts as a retinaculum for the bunch of costal spines, borne by the 

 hind wings. 



In this family, the subcosta of the fore wings is forked near its 

 middle (Fig. 719); the abdomen of the adult female consists of ten 

 distinct segments; and there is no ovipositor. 



There is no published account of the transformations of our 

 American species. The larvae of certain exotic species have been de- 

 scribed; they are very delicate, have long antennse, and feed upon wet 

 moss. The pupa state is passed in the ground; the pupa has large, 

 crossed mandibles. The adults feed on pollen. 



Two American species have been described; these are Epimar- 

 tyria auricrinella, which is found in the East, and Epimartyria par- 

 della, found in Oregon. 



Family ERIOCRANIID^ 



The Haustellate Jugaies 



The members of this family, like those of the preceding one, are 

 small insects which resemble tineid moths in general appearance. 



