36 



INSECTS INJURIOUS TO THE APPLE. 



transparent, the thick anterior edge and large veins are 

 orange-red, and near the front margin, towards the tip, there 

 is a dusky, zigzag line resembling a W. The rings of the 

 abdomen are edged with dull orange, and the legs are of the 

 same hue. The locusts appear in the South earlier than in 



Fig. 24. 



the North ; their usual time is during the latter part of May, 

 and they disappear early in July. 



After pairing, the female deposits her eggs in the twigs of 

 different trees, puncturing and sawing small slits in them, as 

 shown in Fig. 24, d, which she does by means of her sharp 

 beak, which is composed of three portions; the two outer are 

 beset with small teeth like a saw, Avhile the centre one is a 

 spear-pointed piercer. In these slits she places her eggs. 

 These (g, Fig. 24) are of a pearly-white color, one-twelfth 

 of an inch long, and taper to an obtuse point at each end. 

 'J'hey are deposited in pairs, side by side, with a portion of 

 woody fibre between them, and placed in the cavity some- 

 what obliquely, so that one end points upwards. When two 



