INSECTS AFFECTING PARK AND WOODLAND TREES 



469 



The parent insect is a brownish, rather stout beetle, about 5/32 inch in 

 length. The black, coarsely granulated eyes are emarginate, the head 

 and thorax are finely punctured and the wing covers 

 ornamented with longitudinal rows of coarsely set punc- 

 tures. The structure of the tibiae, antH'nnar and pro- 

 ventriculus of tliis species and the allied 1) ryocoetes '^■^]^ 

 autographus Ratz. is illustrated in figure 118 and "^^^^^ 

 on plate 67, figure 17, plate 69, figures 9, i i. 



Saperda mutica .Say 



A small, black beetle with gray or yellowish vestiture is some- ^'^ :::^^"tp'r't n." "^^ 

 times bred from willow gr.,ph,.s.c,.Urgcd(on«i„al) 



Very little is known respecting this insect. Beetles were captured by 

 Mr \Y. H. Harrington on May 15 and June 29, and he states that this 

 species lives in decaying willow. It has been recorded from Canada south 

 to Missouri and westward to Nebraska. It appears to be an uncommon 



species. 



Bibliography 



,904 Felt, E. P. Sc Joutel, L. H. N. Y. State Mus. Rul. 74, p. 21 



Sesia albicornis Hy. Edw. 



.\ blue black clearwing moth having a wing spread of Jb inch, bores as a larva in 

 willow. 



This species lives in the trunks and branches of young willows growing 

 in swampy places. It also breeds in the burrows of the mottled willow 

 borer, C r y p t o r h y n c h u s la [) a t h i Linn, and in the galls of Saperda 

 concolor Lee. It has been recorded from New York, New Jersey, 

 Pennsylvania, New Hampshire, Illinois, Colorado, California, Nevada and 



Oregon. 



The type of this insect, according to its describer, came from Nevada, 

 though the late Dr Riley, in cominenting on this species, states that it was 

 received from Karner [Centre] N. V. U is recorded as a common species 

 in certain localities. The pupal case is represented on plate 16, figure 15. 



