Pyralidse 



The insect occurs from Canada and New England in the North 

 to the Potomac and the Ohio in the South. 



(4) Crambus trisectus Walker, Plate XLVIII. Fig. 20, ?. 



Syn. /«/^rw/;;.V/«j Walker; ejcsiccatus ZeWar ; dUiturellus ZcW^v. 



This is a very common and widely distributed species rang- 

 ing from the Atlantic to the Pacific through more temperate 

 latitudes. 



Genus DIATR^A Guilding 



(I) Diatrsea saccharalis Fabricius. (The Larger Corn-stalk 

 Borer.) 



Syn. /au-anhnus Walker; /un-os,/hu Walker; od/itemteUus Zeller; cm>„l,i. 

 duides Grote. 



As early as the year 182S the attention of the world was called 

 to the damage inflicted upon the sugar-cane in the West Indies 

 by the larva of a iepidopterous insect. The author of the paper 

 m which it was described was the Rev. Lansdown Guilding, who 

 was awarded a gold medal by the Society of Arts for his account 

 of the insect. About thirty years later, attention was called to 

 the ravages of 

 a similar insect 

 in the island of 

 Mauritius, into 

 which it had 

 been intro- 

 duced. From 

 the West In- 

 dies the insect 

 was transport- 

 ed to Louisi- 

 ana, and a 

 study of its 

 pernicious 

 habits was ac- 

 curately made 

 in the year 1 88 1 

 by Dr. L. O. 

 Howard of the 



United States Department of Agriculture. It had been known in 

 Louisiana as a pest since 1855. 



403 



/ 



Fig. 223.— Z). saccharalis. a, b, c, varieties of larva, en- 

 larged; d, third thoracic segment; e, eighth abdominal see- 

 ment ; /, abdominal segment from side ; g, same from above 

 enlarged. (After Howard, "Insect Life," Vol. IV, p loi ) 



