CLASSIFICATION AND DESCRIPTION OF COMMON INSECTS 33 1 



Sometimes injurious. Adult beetle distinguished from Plum Curculio 

 by following characters: (i) more reddish-brown; (2) snout much 

 longer and borne directly in front of the head; (3) wing-covers 

 with four prominent humps; (4) abdomen more robust; (5) crescent- 

 shaped mark absent. The life-history much the same as that of the 

 Plum Curculio, except that the pupal stage lasts about a week. Beetles 

 feed but little after they emerge in summer. Larva a hump-backed 

 footless white grub, 3-^ inch long. 



Control. — Spray with lead arsenate (3 lb. to 40 gal.) just after 

 the blossoms fade, and at intervals of 10 days; gather promptly fallen 

 fruit; jar the trees and collect beetles. 



Clover Leaf Weevil (Phyionomus pundatus Fab.). Adult. — "A 

 stout, oval, brown, finely punctured curculio," about 3^^ inch long; 

 pro thorax narrower than abdomen; beak about i}'^ times as long as 

 the head, stout and curved. 



Eggs. — Yellow, oval and pitted. 



Larva. — A green, footless grub with a brown head, and a whitish 

 stripe edged with black-red along the middle of the back, tapers to 

 each end; lies curled in the ground. Hibernates. 



Pupa. — Cocoon is oval and the pupa has "a yellowish-green head, 

 small black eyes, and a dark green abdomen." 



Life-history. — One brood a year, and winters as a partially grown 

 larva. In spring it resumes its growth, and reaches maturity in June. 

 Pupal stage beneath the surface does not last long, and adult beetles 

 emerge in June and July. Eggs laid in September and October, and 

 the grubs are partially grown when winter comes. 



Control. — Plow under infested fields after second season so as to 

 destroy early stages of insect. 



The Lesser Clover Leaf Weevil {Phytonomus nigrirostris Fab.). — 

 More injurious in Canada than the preceding. 



Adult. — Brown on emergence, later becoming green; snout black; 

 thorax rounded with two dorsal brown stripes; length 3 to 4 mm. 



Eggs. — Ovoid, greenish, reticulate, placed beneath epidermis of 

 leaf sheath; hatch in 7}/^ to 8^^ days. 



Larva. — Greenish straw-color; head light brown; pale dorsal stripe. 

 Feeding on tender leaf buds beneath sheath, or in flower heads where 

 it destroys the florets; 17-20 days. 



