188 



ELEMENTARY ENTOMOLOGY 



caterpillars are slightly over an inch long, yellowish or yellowish- 

 green, marked with numerous shining black tubercles or warts, 



and may be recog- 

 nized by the fine 

 web which they spin 

 over the food. The 

 moths are of a 

 yellowish-buff color, 

 with darker mark- 

 ings (see Fig. 293). 

 The melon caterpil- 

 lar and the pickle- 

 worm (Diaphania 

 hyalinata and niti- 



FlG. 293. The garden web-worm (Loxostege similalis] 



a, male moth ; b, larva, lateral view ; c, larva, dorsal view ; d, 

 anal segment ; ?, abdominal segment, lateral view ; /, pupa ; 

 -, cremaster. a,l>,c,f, somewhat enlarged; d,e,g, more en- 

 larged. (After Riley and Chittenden, United States Depart- 

 ment of Agriculture) 



dalis] are serious crop 

 pests in the Gulf 

 States, though they 

 occur farther north and in the West. The caterpillars are about 

 an inch long, yellowish or greenish-yellow, and feed on the foliage, 

 flowers, and fruit. Among the typical pyralids is the clover-hay 



FIG. 294. The meal snout-moth (Pyralis farinalis Linn.). (Twice natural size) 



a, adult moth; l>, larva; <r, pupa in cocoon. (After Chittenden, United States Department 



of Agriculture) 



worm (Pyralis co stalls], which is abundant in stacks or mows of old 

 clover hay, upon which it feeds and which is spoiled by being cov- 

 ered with its silken webs and excrement. The moth is of a lilac 



