LEPIDOPTERA : TINEID^. 411 



hind wings lead-color ; the antennae are thread-like, and 

 consist of numerous beaded joints, and two tapering feelers 

 are turned over the head. It lays from sixty to ninety 

 eggs in clusters of about twenty on a single kernel of 

 grain. In four to six days these eggs produce little worm- 

 like caterpillars not thicker than a hair. Each burrows 

 in a single kernel, and devours the mealy substance, and 

 the work of destruction goes on so unseen, that it is only 

 detected by the softness of the grain or the loss of its 

 weight. When fully grown the Angoumois caterpillar is 

 not more than one fifth of an inch long, white, with 

 brownish head, six small jointed legs, and ten extremely 

 small prop-legs. It goes into the chrysalis state within 

 the kernel. Before this it has gnawed a hole nearly 

 through by which to escape when it has finished its 

 transformations. The insects of the summer brood come 

 to the full larva growth in about three weeks, remain for 

 a time in the chrysalis state, and in autumn they appear 

 in the winged form, and may be found in the evening in 

 great numbers laying their eggs upon stored grain. The 

 moth-worms of the second brood remain in the grain 

 through the winter, change into winged moths in the 

 summer, and lay their eggs on the ears of the growing 

 grain. 



The Genus Tinea Tineans contains a large num- 

 ber of very small moths, found in houses, stores, granaries, 

 and mills, and which in the larva state 



Fig. 302. 



are very destructive, devouring almost 

 all kinds of substances. The winged 

 moths enter through the cracks into clos- Tinean 



ets, drawers, chests, or get under the edges 

 of carpets, or into the folds of curtains and garments, and 

 deposit their eggs, which hatch into caterpillars in about 

 fifteen days, and immediately begin to gnaw the sub- 

 stances within reach, and cover themselves with the frag- 



