INSECT ENEMIES. 



115 



destroyed after they separate, by their large droppings. 

 The larvae are attacked by two parasites; one a very small, 

 unnamed, four-winged fly, the other the Long-tailed 

 Ophion ( Ophion macrurum, Linn.). 



13. THE VAPORER MOTH, THE WHITE-MARKED TUS- 

 SOCK MOTH (Orgyia leucostigma, Smith and Abbr.). 

 This moth takes the name Orgyia from a word signifying 



Fig. 101. LARVA OP WHITE-MARKED TUSSOCK MOTH. 



to stretch out the hands, on account of its resting with the 

 fore legs extended. The English name, Vapor Moth, is 

 applied as descriptive of the males ostentatiously flying 

 by day, or vaporing, when most other moths keep con- 

 cealed. The name White-marked Tussock Moth is ap- 

 plied as descriptive of the four little hairy tufts on the 



Fig. 103. Pupa. Fig. 103. Male. 



WHITE-MARKED TUSSOCK MOTH. 



back of the caterpillar. On each side is a row of smaller 

 tufts of fine, yellow hairs. A narrow dark stripe runs 

 along the back, and a wider dusky stripe runs along each 

 side. There are two long black plumes on the first ring 

 and one on the top of the eleventh ring. They are 



