Insects Injmious to the Apple. 



113 





what brown elj-tni, k-s and clulilied aiileiiii;r. Tlif tliurax is fiuL-ly 

 punctate, and the clytni ha\L' lines nf iiuuetate, stria-. The lioetle's 

 niay api)ear in Aiiril and i\Iav, liut thcv ctrlainly mure usually ocair 

 in dune in Kent, and arc also said to occur in duly. Another lirood 

 occurs in Octolier; siieciniens wviv lircd out from the wood sent by 

 Mr. Lewis Le\-y in early October m 190ri, and some a little Litia- 

 in the year were sciu me by Mr. Furliyv, from "Worcestershire. 



It thus looks as it we bad tliree broods during the \ear, to some 

 extent i.iverlapping. 



The beetles Ijore 

 into the wood to de- 

 posit their eggs ; the>' 

 tunnel upwards along 

 tlie liark a little wav, 

 and then into the 

 Ijark. Tliey then form 

 a tunnel often nearly 

 an inch long, between 

 the bark and the wood, 

 the sculpturing being 

 more pronounced on 

 the latter than the 

 f r m e \ . T li e s e 

 so - called " mother - 

 galleries " are almost 

 straight, and pass u]i 

 the tree, and along 

 their sides the females 

 lay their eggs. I'he 

 length of the egg stage 

 has irot been followed, 

 l:iut iir a few days 

 small white footless 

 larva^ appear, and tunnel outwards from the parent gallery. When 

 mature the larva.- pupate at the end of their galleries, often forming a 

 deepeired chamber into the wood. The beetles then escape through 

 the bark, and leave behind the innumerable small sliot holes. 



There have been counted some fifty lar\'a;- coming from one 

 " pareirt gallery' " : ho\^- many more may occur is not known. 



The winter seems to be passed niainl)' in the larval stage under 

 the bark of the trees, and thus damage is done during the whole 

 year. 



I 



A 



\f. Elk, 1,1c,. 



i:k beetle (Seoliitui 

 ( Natural size.) 



