INSECTS AFFECTING PARK AND WOODLAND TREES 299 



the bark has bci'ii rcinovcd on livuiij^ trees, logs and stumps of beech, wild 



cherry, cultivated cherry, maple antl ironwood, and states that he has met 



with the adults in I"el)ruar\-, A])ril, (une and July. 



The atlult inst-ct is a dark brown beetle, about -^ ,6 inch lon_sj^ and 



with bright rufous antennae, which are remarkable in the male because 



of the extremely long lamellae or pectinations, those of the female 



being strongly serrate. The immature stages have not been met with by 



the writer. 



Bibliography 



1S90 Packard, A. S. V. S. Ent. Com. 5tli Rep't, p. 388-89 

 1893 Hopkins, A. D. W. Va. Agric Exj). Sta. Bui. 32, p. 189 

 1897 Harrington, W. H. Ent. S(>< . Ont. 27th Rep't 1896, p. 71 



European willov^r gall midge 



Rhabdophaga salicis .Schrk. 



European willows are attacked by a small black midge which produces irregular, 

 somewhat fusiform galls inhabited by yellowish, jumping larvae. 



This is another imported species which has apparently become well 

 established in this country, it having been found in considerable numbers 

 in the vicinity of Rochester X. V. during the last four years. It was 

 brought to the writer's attention by Mr H. C. Peck, a nursery inspector, 

 sending infested willows with an inquiry as to the cause .of the trouble. 

 Repeated efforts to ascertain the identity of the species met with failure, 

 till early spring of 1902, when living material was sent to Prof. J. J. 

 Kieffer, a well recognized authority in this group, who kindly determined 

 the insect. 



Injuries. This pest produces many celled galls in the stems of small 

 willows which are grown by nurserymen for the purpose of tying stock into 

 bundles. These abnormal growths make the willows brittle and conse- 

 quently unfit them for binding purposes. This species may eventually 

 prove a -very serious pest to growers of willow for basket purposes, as 

 infested shoots could not be used in this industry any more than for tying 

 trees. 



