20 



Insect Pesls. 



Its food plants are the apple, phun, pear, hawtliorn, lilacktliorn, 

 willow and sallow. 



Ljke-Histo];v axu Habits. 



The moth aitpears at the end of June and in -luly. It varies in 

 length, the male being nuicli smaller than tlie female ; the latter is often 

 OTf inches from wino; to wing, the male seldom more than '1\. The 

 form is shown in Figure (J, page 21; the colours are rich l)ro\\-n, 

 with irregular dark transverse scolloped lines, the posterior wings 



very similar, and hoth pairs 

 have scollopied edges. When 

 at rest the under win^s 



o 



project in a characteiistic 

 manner beneath the upper. 

 The eggs (Fig. 4) are very 

 marked. 



The larva' hatch in late 

 summer and autumn, and 

 liiliernate during the winter. 

 Previous to this they moult 

 once, and then remain ex- 

 tended on a twig (Fig. .5) 

 and assume the colour of the 

 wood. The mature larva' 

 reach over 4 inches in length, 

 they are grey and grey-brown 

 in colour with faint V-shaped 

 dark marks or other indis- 

 tinct ornamentation down the 

 back ; always present, how- 

 ever, are two beautiful deep 

 blue or purple, velvety bauds 

 across the segments next the 

 head. Above the legs on 

 each side and on all the 

 segments is a row of lleshy 

 pad-like appendages with long grey hairs, like lappets, and hence 

 the name " Lappet ]\Iolh " ; there is a more or less prominent luunp on 

 the last but one segment, and all the body is linely hairy (Fig. On). 



When mature in summer the caterpiliar sj.ins a long oval cocoon, 

 pointed at each end, in all 1 have seen, and of a mouse colour, hairs 

 being mixed with the silk. This cocoon is spun up amongst the 



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