506 



NEW YORK STATE MUSEUM 



LEAF EATERS AFFECTING DECIDUOUS FOREST TREES 

 This comprises a very large assembly of species, many of which are of 

 very little importance. It is impossible to adequately notice all the species 

 found on forest trees, consequently this portion of the work is by no means 

 complete. 



Leaf eaters 



Small, triangular, flattened, metallic beetles occur in midsummer on oak and elm leaves, 



Brachys aerosa, p. 512 

 B. o v a t a, p. 513 



A small, stout, brown and black beetle a trifle less than inch long, occurs on scrub oak 



in June. . '. Serica trociformis, p. 514 



Yellowish brown, black-margined flea beetles about 3/,6 inch long, feed in summer on oak, 

 hickory and birch ... . Black-margined flea beetle, Systena marginalis, p. 515 

 A small, shining, dark brown, black-headed leaf beetle y± inch long on scrub oak in July 



Tymnes tricolor, p. 515 

 A slaty gray, brown-striped weevil % inch long on oak in July 



Aphrastus taeniatus, p. 515 

 Terminal lobes of oak leaves rolled into neat cylindric cases containing an egg, may be the 

 work of this species. . . . Two spotted curculio, Attelabus bipustulatus, p. 516 

 A large, greenish weevil ]4 inch long, occurs on the buds of a variety of trees from May 



to July New York weevil, Ithycerus noveboracensis, p. 517 



A stout, light apple-green caterpillar with a conspicuous caudal horn and seven lateral 

 oblique white stripes, feeds on hickory, black walnut and ironwood 



Walnut sphinx, Cressonia juglandis, p. 518 

 A red-headed, striped caterpillar with a conspicuous red hump on the eighth abdominal 

 segment, feeds on oak in midsummer 



Red-humped oak caterpillar, Symmerista albifrons, p. 519 

 A red-headed, grayish caterpillar about 1^2 inches long, with conspicuous pointed eleva- 

 tions on the first and eighth abdominal segments, occurs on oak in midsummer 



Rosy Hyparpax, Hyparpax aurora, p. 520 

 A pale greenish caterpillar about % inch long, with a more or less distinct yellowish lateral 

 line, occurs on oaks and various other trees in midsummer 



Green oak caterpillar, Nadata gibbosa, p. 521 

 A large, greenish, stout caterpillar with fascicles of irritating, sharp spines over the body, 

 feeds in late summer on the foliage of oak and other trees 



Io caterpillar, Automeris i o, p. 521 



