180 



LBPIDOPlJiiitA (^muixiay. 



The HepialidsB suffer from a fungoid disease caused by a 

 curious form called Cordyceps entomorhiza, whicli grows out of 



Fig. 82. 



Cordyceps entomorhiza (a fungus on Hepialus larvae). 

 a, Fruit ; &, mycelium. 



the caterpillar, after having invaded it internally and killed it 

 (fig. 82). 



Bombycina. — The " bomhyces " are mostly clumsy, heavy- 

 bodied moths, with a very hairy covering to their abdomen and 

 thorax. The antennse in the male are pectinated. The wings 

 are broad and tectiform when at rest. The females are generally 

 larger than the males ; some are wingless, as in the Vapourer 

 Moth (Orgyia antigua). The larvse are usually very hairy, and 

 many spin a light cocoon ia which they pupate. The pupje are 

 never found underground. The larvae of some species are 

 gregarious, spinning large tents of silk under which they live 

 (Lackey Moth) ; others — the Psychidm — form cases of foreign 

 objects in which to live. There are several very injurious 

 species in this division, but it also includes the valuable 



