95 



ARTICLE V. NOTES ON INSECTS INJURIOUS TO THE 

 APPLE AND PEAR. 



1. Datana contracta, Walker. 

 Order Lepidoptera. Family Bombycid.b. 



From a number of yellow-necked apple caterpillars collected on 

 apple trees August 13, 1883, and used in an experiment upon a 

 contagious disease of insects, two pup^e resulted, one of which 

 emerged. This, to my surprise, proved to be an unquestioned 

 Datana contracta, agreeing in every essential particular with the de- 

 scription and figures given by Grote and Robinson in Volume VI of 

 the Proceedings of the Entomological Society of Philadelphia.* 



The discal spot upon the first brown line of the anterior wing is 

 not evident, however ; the first and second lines meet on the inner 

 margin of the wing ; and the fourth line is nearly obsolete. In other 

 respects the correspondence is exact. The larva pupated Septem- 

 ber 14, 1883, and the moth emerged June '23, 1884. 



2. Biston ypsilon, n. s. 

 Order Lepidoptera. Family Phal^nid.b. 



(Plate X. Fig. 4.) 



A single looping larva, two inches long, was obtained from the 

 apple near Warsaw, June 26, 1883, and fed upon apple leaves until 

 July 7, when it entered the earth for pupation. Here it remained 

 until April of the following year, on the 8th of which month the 

 living moth was noted in the breeding cage. 



Imago. — The single male specimen bred is of a brownish gray color ; 

 head dusky gray ; palpi black ; antenna? dusky, widely pectinate ; 

 thorax gray, with three transverse dark lines, the anterior and middle 

 arcuate, the posterior straight. The front Mdngs are brownish gray 

 specked with black on basal and terminal thirds, marked with three 

 transverse black lines with the space between the first and third 

 pale gray minutely specked with black, these specks taking the form 

 of transverse lineations on the costa. The inner line is obliquely 

 arcuate, its inner end being about half the distance of the outer from 

 the base of the wing. The third line is sinuate, bending broadly 

 forward around the end of the discal cell and then running nearly 



* Page 14, and Plate II, Figures 5 and ti. 



