INSECTS AFFECTING PARK AND WOODLAND TREES 



515 



Black-margined flea beetle 



Systena marginal is 111. 



A yellowish brown, black-margined flea beetle about 3 /i6 inch long, feeds in summer 

 and autumn on oak, hickory and birch. 



This little species appears to be a somewhat general feeder and occa- 

 sionally it occurs in great numbers. It may be recognized by its yellowish 

 brown color in connection with the narrow, black margin on the prothorax 

 and wing covers. The eyes are rather prominent, finely granulate ; the 

 head smooth, and the prothorax closely and shallowly punctured. The 

 wing covers are ornamented with . irregular, small, rather deep punctures. 

 This species occurs about Albany and has been taken in Ontario by Mr 

 Harrington, who found it abundant on oak, elm and other trees in midsum- 

 mer and also on sweet hickory. It has been recorded by Dr Smith from 

 New Jersey, who states that it is sometimes numerous on oaks. It has also 

 been listed from the vicinity of Washington. 



Tymnes tricolor Fabr. 



This small, shining leaf beetle about % inch in length, has a dark brown or nearly 

 black head and prothorax and reddish brown wing covers, which are slightly and irregularly 

 punctured. 



A single example of this species was taken July 8, 

 1 90 1 on scrub oak at Karner. It has been recorded by 

 Dr Smith as local throughout New Jersey, where it 

 occurs on chestnut, hickory and other plants. 



Aphrastus taeniatus Gyll. 

 This slaty gray-brown, striped weevil, about 

 inch in length, was taken in small numbers on scrub 

 oak at Karner, one specimen being captured July 27, 

 iqoi. Its distribution has been given by Dr Horn , 



J Q J fig. 134 Aphrastus t a e n i- 



as the Middle and Southern States and Dr J. B. Smith atus - enlar s ed (original) 

 records it as occurring throughout New Jersey on pawpaw, hazel and other 

 bushes in July. 



