Lepidoptera 



239 



feelers are bipectinate only in the males, and the frenulum is nearly 

 always present. The wing-neuratlon also differs in that the sub- 

 costal nervure of the hindwings diverges from a point where it 

 connects with the first radial nervure about the middle of the cell. 



Fig. 131. — "Gipsy" Moth, Porthetria dispar (Linn.), Europe. a. 

 male ; b. female ; c. larva. Natural size. From Riley, Insect 

 Life, vol. 2 (U.S. Dept. Agr.). 



The larvae are exceedingly hairy and are often protected by dense 

 tufts or "tussocks" of prickly, sometimes poisonous, hairs (fig. 131). 

 The pups are enclosed in cocoons of silk mixed with the larval hairs. 



