75 



It is oil rc(t()r(l jKirticularly for .serious 

 local injury to young corn in Iowa, tho 

 only published report of the; kind for the 

 species. 



ApANTKSIS AUdK J)ru. 



(Arclia arye.) 



.]r>4r-;^i^i 



This is the caterpillar of the larjie tiger- 

 moth, and seems to have receivcul n(» 

 Knglish name. Hiough not unconimon in 

 Illinois, it is especially a southern species, 

 and was report(>d many years ago as some- 

 times very destructive to Indian corn in 

 the Southern States. It is distributed 

 throughout th<i United States as far west 

 as the Rocky Mountains. 



The spreading hairs are placed in 

 clusters on rows of dark gray warts. The 

 hairs on Ihe l)ack are brown; those on the 

 sides are tinged with red. The surbice of 

 the l)ody is marked by three longitudinal p, ^ , , .,;,.|- 



stripes of reddisli white on the back and i^ "'• :^^^;^;;ii#^ ■■■ ) 



a row of kidney-shaped spots of the San.e „,,, 49. Com ,eaf eaten by the 



color on each side. The general color of '^''-'""^ '^ear, iJiacriaiu mryinica. 

 the skin is greenish gray, and the head 



and neck-shield are blar-k. Tin; full-frrown larva is an inch a.ul a half 

 in length by a)>out a f|uarter of an inch in transverse diameter. 



In addition to corn, it is known to feed upon plantain, evening prim- 

 rose, smartweed, dock, cactus, lamb's-quarters, anrl pea. 



This species is double- 



'^iiii:- .. I \ .-/<>i-;^. brooded, p4issing the winter 



.(wT**-**- . •.. I ) .x:^''^-'*''^ '" '"" ''^^'^'i^e as a cater- 



'••' -^tr*U«« ">^»^ W j)illar pai-tly grown, and 



^^^•"■^=^'^|A/"^«i2^'^-^rr.^^^^ changing to the pupa in 



(V>...' ^ ^ %»♦/,; March and April of the foi- 



'* ^ '^^M V-v.^^' lowing year. After a pupal 



^^ '' • >T:-^ period of about fifteen days 



the motli emerges and lavs 



l...r,0. Avanie.i..r,.. H)i«ht.y en,ar«e,J. ^er CggS Until l.tc in Muy. 



These hatch in fifteen to 

 twenty <iays, jjroducing a second broo<l of the caterpillars in the 

 nuddle part of June, and the pupa' from these are formed early in July, 

 'r''" '" ♦'"•' ""•""' •■""' ''"-l.v ill August the moths (Fig. 50) appear, 



