510 



SUBFAMILY X. CURCULIONIN^E. 



New Jersey, May 20 December ; by sifting old leaves in a swamp 

 on the latter date. Dimediu, Fla., March 17. Ranges from New 

 Jersey to Michigan, south to Florida and Mississippi. Occurs on 

 dead twigs. (Ulkc.) The beak is stouter and the postocular lobes 

 more prominent than in the other species of the group. 



803 (11,073). CKYPTORHYNCHUS LAPATHI Linn., 1746, No. 591. 



Elongate-oval, robust. Black or piceous, not shining, densely clothed 



with sooty black and pale scales, intermixed 

 with tufts of erect black bristles; the pale 

 scales covering the apical third of elytra and 

 forming an obscure oblique band on basal 

 third of each; thorax, legs and body beneath 

 mottled with similar scales; antennas and 

 tarsi reddish-brown. Beak as long as head 

 and thorax, coarsely and densely punctate, 

 feebly carinate. Thorax one-third wider than 

 long, disc densely, closely punctured, with a 

 low, nearly entire median carina. Elytra at 

 base one-third wider than thorax; sides paral- 

 lel for two-thirds their length, then converg- 

 ing to an obtuse apex; strial punctures 

 large, quadrate. Length 7.5 10 mm. (Fig. 

 112.) 



Not yet known from Indiana, though 

 it undoubtedly occurs in the northern 

 counties. Found throughout northern 

 New Jersey on willow, May September. Batavia and Ithaca, N. 

 Y., June 15 Oct. 3. Chicago, 111., July 30. A European species, 

 first noted in this country in New York in 1882, now distributed 

 from Orono, Maine, to Wisconsin and North Dakota, south to Dis- 

 trict of Columbia. Attacks the weeping willow, Carolina poplar, 

 red birch and other similar ornamental trees and called the "pop- 

 lar and willow borer" by Forbes. The adults puncture the bark, 

 gouging out the cambium layer, while the young, which hatch in 

 the older bark of the branches, mainly in August and September, 

 penetrate at once the cambium layer in which they hibernate, 

 pupating in the older wood and emerging the following May or 

 June. In trees where the grubs are few they may be cut out and 

 the wounds covered with tar. Badly infested trees should be 

 removed and burned in winter or spring. Arsenical sprays can 

 also be used to advantage. Webster (1911) states that adults 

 were kept five days in a freshly and heavily charged cyanide 

 bottle and were then found alive and mating. 



