1570 



ENCYCLOPEDIA OF PRACTICAL HORTICULTURE 



larvae live and in which they change to 

 pupae." The caterpillars of the fall gen- 

 eration appear about the middle of Sep- 

 tember, reach their growth before the 

 leaves drop and transform to pupae, in 

 which state they pass the winter. 



Either cut out and burn the nests, or, 

 in case of early varieties, from which the 

 fruit has already been picked, spray with 

 arsenate of lead, just as the worms ap- 



H. A. GOSSARD, 



Ohio Agricultural Experiment Station Bulle- 

 tin 233. 



Tarnished Plant Bug 

 Stop Back on Peach 



This is a grayish-brown bug, marked 

 with black and yellow, and it is about 

 one-fifth of an inch long. It is very com- 

 mon and attacks many cultivated plants. 



Treatment 



To protect the peach crop, clean cul- 

 ture is advised to keep down the weeds 

 among the trees and about the margins of 

 the orchard. 



Tussock Moth. See Apple Pests. 



Walnut Scale. See Walnut Pests. 



Spotless Fall Web Worm 



HypTiantria textor Harris 



(Family Arctiidae) 



General Appearance 



The adults are slightly over one-half 

 inch long with a wing expanse of one and 

 one-half inches. The body is light and 

 the wings pure or dusky white. There 

 are no spots upon wings or body. This 

 species is distinguished from the fall web 

 worm (Hyphantria cunea Drury) of the 

 Eastern states by the pure white antennae 

 and the absence of spots on the abdomen. 

 The full grown larvae are very hairy, yel- 

 lowish or greenish in color, with a dark- 

 er stripe along the back, a yellow stripe 

 along the side and covered with whitish 

 hairs which arise from black and orange- 

 yellow tubercles. 



Life History 



This species hibernates in the pupa 

 stage within a cocoon attached to tree 

 trunks, fences, rubbish or under the 

 ground. The moths emerge in the spring, 



mate and during the nights the females 

 deposit from 400 to 500 eggs in clusters 

 upon the leaves of the food plants. The 

 caterpillars feed in colonies and spin webs 

 large enough to accommodate all the mem- 

 bers, which may include a large limb of a 



Pig. 1. The Spotless Pall Web Worm (Hyphan- 

 tHa textor (Harris). Top, female; bottom, 

 male. Enlarged. (Original.) 



tree. When full grown the larvae leave 

 the web and descend to suitable pupal 

 quarters. There are two broods a year, 

 the second appearing late in the summer. 



Food Plants 



This species feeds upon the foliage of 

 a great number of wild and ornamental 

 trees and shrubs, as well as upon fruit 

 trees. 



Control 



The application of arsenical poisons, 

 the collecting of the cocoons and the 

 burning of the nests or webs containing 

 the larvae with a torch are the remedies 

 used against this pest. 



IVatural Enemies 



Internal parasites play a very impor- 

 tant part in the control of this moth. ' 



E. O. EssiG 



