INSECTS AFFECTING PARK AND WOODLAND TREES 



;8i 



secreting themselves therein and feed on the foliage. They are slender, 

 pale green or yellowish green caterpillars sometimes reddish or brownish, 

 about -V^ inch long, with the head and thoracic shield brown and often a 

 green stripe along the back. They attain their growth in early fune, 

 transform to pupae, delicate brown moths with a wing spread of about l/% 

 inch appearing the latter part of June or early in July. 



Rose leaf folder 



Arch ips rasa na Linn. 



A dark olive-green, brown-headed caterpillar feeds within the webbed-together leaves 

 of rose and a number of other plants. 



This leaf roller is an introduced species and like its allies, not very par- 

 ticular as to its food plants. It has been recorded from wild rose, apple, 

 hawthorn, raspberry, hazel, currant and gooseberry. Both larva and moth 

 are darker than those of most of our native species. The brownish gray 

 moth, having a wing spread of about ^ inch appears in early June. 



Platynota flavedana Clem. This is another small rose leaf roller liable 

 to cause more or less injury outdoors and likely to invade greenhouses, in 

 which latter it may acquire the bud-eating habit. 



Walnut curculio 



Conotrachelus juglandis Lec. 



A curculio very much resembling the plum pest though 

 larger, }^ inch long, frequently infests walnuts and 

 butternuts. 



This species very closely resembles the plum 

 curculio. It is about ^ inch in length, reddish 

 brown and prettily ornamented with golden and 

 silvery hairs. The most conspicuous feature is 

 the broad transverse whitish band on the posterior 

 third of the wing covers. The curious projec- 

 tions on the wing covers seen in the plum curculio 

 also occur, and an examination with the lens shows them to be strongly 

 ridged and ornamented with several minor processes. 



Fig. 145 Conotrachelus jug* 

 land is, enlarged (original) 



