Insects Injurious to the Apple. 



47 



has been sent me from apple and plum Ijotli from the south and 

 Midlands of England. Whitehead (0) sa}'s that pear trees are its 

 special favourites, and he also records as many as seventy-six lar\;c 

 being taken from one tree in Herefordshire in 1S79. 



In iSSd several were found by me in a young walnut tree, 

 the tree having been killed by 

 their tunnelling into it near 

 the ground, and other instances 

 of their destrnctive habits in the 

 walnut ha^■e also been brought 

 to my notice (o). 



It has been decidedly on the 

 increase in apple trees this last 

 few years, hence is included in 

 this section. 



LuT.-HisTiiyjv Axii Hamts. 



During June and July we 

 find that this lepidopteron, 

 which belongs to the Coccid;e, 

 makes its aclYent in the winged 

 or perfect state, when they may 

 be seen at rest upon tree trunks 

 near the ground. The peii'ect 

 insect is about 2 inches in ex- 

 panse of wings ; white, some- 

 times almost transparent white, 

 with isolated spots of steel-blue 

 colour, the nervures terminating 

 in patches of the same cohjur. 

 The head covered witli vhite 

 ilownv hair ; antenna/ black. 

 Thorax white, with twij rows of I 

 three rnetallic-blue spots; alido- 

 men deep bluish-black, co^'ered 

 at the edges of the segments with 

 a white hairy down. The female 

 is similar to the male, only larger, 

 and armed with an extensile ovipositor. 



]' LKi.il'Aia' ^ni'l'll AND TUNNia.LEIi AVOnli. 

 (ilUL'-thil'd ii;Uiiral-^iz(.-.) 



The eggs, which aic dark 

 yellow or orange-yellow, are laid deep in the bark of the tree during 

 June, July and August; the}^ take from two to three weeks to deve- 

 lop. Whitehead (6) says they hatch in a few days after oviposition. 



