198 CATERPILLARS AND THEIR MOTHS 



seven days. They ate much after the fourth molt, eat- 

 ing the common blueberry {Vacciniiim corymhosum) 

 and the daugleberry {Gaijlnssacia frondosa) equally 

 well. Their length was about two inches, and they 

 were largest at the eighth, ninth, and tenth segments. 



The bifid caudal horn distinguishes astyliis from all 

 the SmerintJiincB we know. 



The moth is rare in all stages, probably because it is 

 so delicate and so often a victim to parasites. We 

 have shown a stung larva in our illustration as being 

 more often found than unstung ones. 



The range of the species is not fully known. We 

 are told that in New Jersey it has been found on willow, 

 but blueberry, dangleberry, and Andromeda ligustr'ma 

 are the only plants on which we have seen it, and on 

 the last we have found but one specimen. 



The i^upa is dark brown, with concealed tongue- 

 case. The moth has the fore wings slightly falcate, 

 but not notched. They are of brown, varying from 

 almost ocher to deep brown, and are 'crossed by lines 

 of lilac and brown. Near the inner angle is a bluish- 

 lilac patch. The hind wings are chiefly ocher-brown, 

 with a lilac patch near the front angle, and a blue eye- 

 spot heavily encircled with black. The head and 

 thorax are purple-brown, with an ocher-brown stripe 

 through the middle. The abdomen is brown, more or 

 less suffused with lilac at the base. The wings seem 

 to have a bloom over them when the moth is freshly 

 emerged. The antenme of the male are pectinate, of 

 the female simple. 



As in all the SmerinthincB we know, the female is 

 larger than the male 



