206 THE CANADIAN ENTOMOLOGIST, 



Goes, Lee. 



Contains several species, mostly of rather or quite large size, 



resembling Saperda somewhat in form, but with a strong lateral thoracic 



spine. All have the upper surface mottled with pubescence, sometimes 



arranged in tolerably distinct transverse bands. Since only one of the 



North American species is lacking from Canada, we reproduce Dr. 



Horn's synopsis as far as it concerns us : 



A. Surface colour of body brownish ; antennae of male at most one and 



one-quarter times the length of the body. 



b. Elytra with conspicuous denuded fascia one-third from apex. 



Pubescence of surface white, i.oo in iigrma, DeG. 



Pubescence ochreous or luteous, basal region of elytra 



darker, less pubescent. .92 in puichra, Hald. 



Pubescence marmorate, whitish and ochreous, the apical 



region darker ochreous. .^^-.^2 in debilis, Lee. 



bb. Elytra without conspicuous denuded fascia, pubescence cinere- 

 ous or almost white, uniform, sometimes with faint trace 

 of denuded fascia. .80-.88 in pulverulejita, Hald. 



A A. Surface colour black, shining, pubescence whitish, a small con- 

 spicuous black spot on each elytron, one-third from apex. Antennae 



of male twice as long as the body. .40-.44 in oculata, Lee. 



A few notes on food-habits have been published, from which it 

 appears that debilis has been found on hickory and white oak, tigrina on 

 hickory (as an adult) and in oak (as larva); puichra and oculata are found 

 in the mature stage on hickory, while the larva of pulverulenta is said to 

 bore in wild cherry and in living beech trees. 



AcANTHODERES, Serv. 



The three species belonging here may be separated from those 

 immediately following by their antennae, in which the first joint, or 

 scape, is strongly clavate. They are brownish insects, maculate above 

 with whitish or ashy pubescence, of rather robust form, the upper surface 

 rough, the femora much swollen. Prothorax with strong, sharp lateral 

 spine. The differentials are given by Dr. Horn, thus : 



A. Sutural region of elytra vaguely grooved, the groove limited on 

 each elytron by a feeble costa. Elytra with a moderately broad 

 transverse band of white in front of middle, broadly interrupted 

 at suture. .40 in quadrigibbus, Say. 



