DAY-FLYING MOTHS. 



Turning to their preparatory stages, the larvae are 

 endophytous, boring, with strong mandibles, the 

 interior of stems and roots of cacti, of orchids, and 

 other plants — a habit similar to that of the caterpillars 



of the Hetero- 

 '^^^ cerous Cossians 



and Sesians, but 

 which, though 

 found in butter- 

 tlies, is very 

 exceptional. 

 Likewise they 

 are provided 

 with the ordinary 

 horny piliferous 

 spots or tU" 

 bercles that cha- 

 racterize Hete- 

 rocerous larva;, 

 and have a 

 horny anal plate, 

 whereas butter- 

 fly larvae rarely 

 possess these warts, but are frequently beset with 

 close-shorn bristles, springing from the general surface, 

 or from minute papillae. In keeping with all Hete- 

 rocerous borers, the pupae are supplied with minute 



"^ 



Fig. 36. — Cast7iia cudesmia, from Chili. 



