INSECTS AFFECTING PARK AND WOODLAND TREKS 511 



A black-headed, velvety black caterpillar, usually with a conspicuous somewhat broken 

 subdorsal yellow stripe and another along the stigmatal line, occurs in the fall on 

 poplar, willow and othw trees and shrubs 



Smeared dagger moth, A pat el a o b 1 i n i t a, p. 560 

 A black, yellow-striped larva about \% inches long, feeds in the folded, webbed-together 

 leaves of poplars and willows. . . Poplar tent maker, Melalopha i n c 1 u s a, p. 560 



A yellowish sawfly larva occurs on willow Ptefonus mendic 11s, p. 561 



A black-headed, light green sawfly larva on willow Pteronus odoratus, p. 562 



A striped, rather stout, black and yellow beetle about inch long, occurs in June on willow 



Willow flea beetle, Disonycha Carolinian a, p. 563 

 A reddish, black-spotted beetle about % inch long, feeds during the summer on willow 



leaves Spotted willow leaf beetle, Melasoma 1 a p p o n i c a, p. 564 



A yellowish, black-marked, hemispheric beetle %. inch long, feeds the latter part of the 



summer on willows and hard pine C h r y s o m e 1 a bigsbyana, p. 566 



A dull red leaf beetle about % inch long, feeds on willow 



Dull red willow leaf beetle, Galerucella decora, p. 566 

 A small, brownish, long-snouted beetle thickly clothed with golden and brownish pubes- 

 cence, occurs in considerable numbers on willow in early spring 



E 1 1 e s c h u s ephipp.iatus, p. 567 

 .Orange-yellow, black-spotted larvae about 7 /io inch long, feed side by side on the foliage 

 of poplars in early June. . . . Poplar sawfly, T r i c h i o c a m p u s v i m i n a 1 i s, p. 568 

 Black-headed, bluish or leaf-green sawflies feed on the edge of poplar leaves 



Pteronus hudsonii, p. 569 

 A greenish, solitary edge-feeding sawfly on poplar. . Pteronus v e r t e b r at u s, p. 570 

 Yellowish, black-spotted sawfly larvae feed during August and September on birches 



Hylotoma pectoral is, p. 570 

 A brown-headed, greenish solitary sawfly larva feeds on the underside of birch leaves 



N e m a t u s uni c o lor, p. 571 

 Brown-headed, purplish solitary or partly gregarious sawfly larvae occur on white birch 



Pteronus 1 a t i f a s c i a t u s, p. 572 

 A black-headed, greenish sawfly larva feeding gregariously on the edges of alder leaves 



A m a uronematus luteotergum, p. 572 

 Deep prussian blue, rounded flea beetles about '/ 5 inch long, or dark brown, black-headed, 

 black-tubercled larvae occur in large numbers on alder 



Alder flea beetle, H a 1 1 i c a bimarginata, p. 573 

 Peculiar, thimblelike rolls of leaves on alder, hazel and sumac may be the work of this 

 species A tt el abas rhois, p. 1574 



