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middle; unocellated. Larva on Walnut and Ironwood. Not 

 common. June, July. Canada to Southern States. Varies 

 in depth of color, sometimes with a light purplish reflection ; 

 distinguished by its slender form and bombyciform appearance; 

 structurally it is nearest to Paonias. 



Triptogon. Bremer. 



Stout and spliingiform ; head small and sunken ; fore 

 tibiae with a spine at extremity of the joint; tibiae else 

 unarmed ; surface of abdomen spinose beneath the scales ; 

 antennae fusiform without terminal hook, biciliate in males, 

 simple in females. This genus prepares us for the following 

 Sphinginae. 



Modesta. Harris. This large moth is of a slaty gray 

 with darker olivaceous bands and shadings on primaries ; 

 hindwings with a dusky roseate central patch. Larva on 

 Poplar and Cotton wood. June to August. Canada to 

 Southern States (Cablei) where the larva is said to feed on 

 water plants. Not rare. A variety Occideiitalis occurs 

 in the West. 



Subfamily Sphinginae. 



Anglice: Typical Hawk Moths. 



Large, usually gray and blackish species with well 

 developed tongue and entire wings with internervnlar sub- 

 terminal dashes on primaries. Larva pupating in the earth; 

 flight crepuscular or nocturnal. Food plants, in preference, 

 Solenaceae, Syringa. 



Ceratomia. Harris. 



The horned larva, feeding on elm, allies the moth to the 

 preceding genus and the soft brown colors of the imago are 

 Smerinthoid. Also the head is small, somewhat sunken as in pre- 

 ceding group. Abdomen heavy, tapering, the segments armed on 



