HAWK-MOTHS OF THE VICINITY OF NEW YORK CITY 27 



the catalpa trees are sometimes comjjletely defuliated by the 

 caterpillars. The species has made its appearance at Lake- 

 hurst, New Jersey, and without doubt before long will be found 

 in this vicinity. The caterpillars are social and live in large 

 colonies, differing in this respect from all other species of Sphin- 

 gidae. Enters the ground to pupate. 



40. Dolba JiylccHS. 



Not common in this vicinity. In general appearance it re- 

 sembles a miniature Phlegethontius rnsticus (No. 27). It is found 

 from Canada to Florida and westward to Iowa. The caterpillar 

 feeds on the ink-l:)crry {Ilex glabra). Enters the ground to 

 pupate. 



41. Lapara coniferariim. 



Very rare in this vicinity. Found from Canada to Florida, 

 The caterpillar feeds on pine. Enters the ground to pupate. 



