INSECTS INJURIOUS TO CLOTHES 



197 



12 days. In another instance, the pupal period ap- 

 peared to be about 16 days. It is said there are two 

 generations of this clothes moth in the Northern states, 

 " the first appearing in 

 June from eggs deposited 

 in May, and the second 

 in August and Septem- 

 ber." It would appear, 

 from our studies, that the 

 first generation of moths is from eggs deposited in July 

 and August of the previous year. 



The larva (Fig. 56) of this moth builds no case, but spins 

 a path of silk wherever it goes. When the larva is full 

 grown it builds a cocoon of silk intermixed with bits of 

 food material. The cocoon is rather rougher and more 

 irregular in outline than that of the case-making moth. 



Fig. 56. — Larva of the webbing 

 clothes moth. (X 6.) 



THE TAPESTRY MOTH 



Trichophaga tapetzella 



The tapestry moth (Fig. 57) is somewhat rare in this 

 country, but apparently common in England. It is con- 

 siderably larger than either of the other two species and 

 much more striking in appearance, owing to the markings 



on its wings. The 

 wings expand three- 

 quarters of an inch 

 and are black from the 

 base to the middle, 

 while the outer half is 

 w r hite, clouded with 



:■-■■ 



n 



Fig. 57. — Tapestry moth. (X 3.) 



