602 



AN INTRODUCTION TO ENTOMOLOGY 



The carpenter-moths are of medium or large size. The antennas 

 of the males are mostly bipectinate; those of the females are either 

 very slightly bipectinate or ciliate. In a few species the antennae are 

 lamellate. The ocelli are wanting, and the maxillae are vestigial. 



The venation of the wings of our most common and most widely 

 distributed species is shown in Figure 727. There are two well-preserved 

 anal veins in the fore wing, and three in the hind wing. The base of 

 media is preserved, and is forked within the discal cell. In the fore 



c . /?■ />, 



Fig. 727. — Wings of Prionoxystus robinice. 



wing the veins R3 and R4+5 anastomose, forming an accessory cell. 

 The frenuliim is vestigial in this genus ; but in some other genera it is 

 well developed. 



Atithors differ greatly regarding the appropriate position of this 

 family in the series of families. Certain characteristics of the larvae 

 indicate that it belongs somewhere among the specialized Micro- 

 frenata?; but I place it here at the beginning of the Non -aculeate 

 Generalized Frenatce on account of the generalized structure of the 

 wings. 



This family is represented in our fauna by thirty-four described 

 species; it has been monographed by Barnes and McDunnough 

 ('11). The family includes three subfamilies, which are separated 

 as follows : 



