330 INJURIOUS INSECTS, WITH TREATMENT 



of the potato near or just below the ground. Serious at the West 

 and in some places eastward. 



Remedy. Pull all infested vines as soon as they wilt, and spread 



them in the sun where the insects will be killed. Burn the vines 



as soon as the crop is harvested. Destroy all solanaceous weeds. 



FLEA-BEETLES (Halticini). Small, dark-colored jumping beetles 



that riddle the leaves with holes. See p. 303. 



Preventive. Bordeaux mixture as applied for potato blight 

 acts as a repellent. 



POTATO TUBER-WORM (Phthorimcea operculelld). A small caterpillar 



burrowing in the stems and tubers both in the field and in storage. 



Preventives. Clean cultivation, sheep and hogs to destroy the 



small potatoes left in the field after digging. Crop rotation over 



a considerable area. On digging remove the potatoes at once to an 



uninfested storeroom. Do not leave them on the field over-night. 



WIRE-WORMS. See p. 305. 



Privet or Prim. PRIVET WEB-WORM (Diaphania quadristigmalis) . 

 Small larva feeding in webs on the young shoots, of the privet, 

 appearing early in the season ; two to four broods. 



Remedies. Trim the hedge as soon as the worms appear, and 

 burn the trimmings. Probably the arsenicals will prove useful. 

 Quince. GOUND-HEADED BORERS. See under APPLE, p. 308. 

 SLUG. See under CHERRY, p. 313. 



QUINCE-CURCULIO (Conotmchelus cratcegi). This curculio is some- 

 what larger than that infesting the plum, and differs in its life- 

 history. The grubs leave the fruits in the fall, and enter the ground, 

 where they hibernate and transform to adults the next May, 

 June, or July, depending on the season. When the adults appear, 

 jar them from the tree on to sheets or curculio-catchers and de- 

 stroy them. To determine when they appear, jar a few trees daily, 

 beginning the latter part of May. Arsenicals. 

 Radish. MAGGOT (Pegomya brassicce). Treated the same as the 



CABBAGE-MAGGOT, which see (p. 312). 



Raspberry. CANE-BORER (Oberea bimaculata) . Beetle, black, small, 

 and slim ; making two girdles about an inch apart near the tip 

 of the cane, in June, and laying an egg just above the lower 

 girdle ; the larva, attaining the length of nearly an inch, bores 

 down the cane. Also in blackberry. 



