INSlXrS AFKEcriNi; I>.\KK AND WOODLAND TREES 



429 



A lar^i-, l)rownisl>, yellow-inirkcd and ycllow-hniuii-d, clearwing iniitli with a winn spread 



of I ' 2 inches, bores as a hir\ a in ash M c ni \- t li r u s a s i 1 i ]< e n n i s, p. 464 



A sawrty larva ho'es in the partly decayed wochI of standing liirch and makes a t;alli"''y 



about li inch in diameter X y p h i d r i a p r o v a n < h e r i, p. 465 



A horntail borer making mnderalcly large, cviindric: burrows in decaying birch 



Slender liirch horntail, K o n o \v i a a 1 1 e n u a t a, p. 466 

 A flattened, brilliantly culorcd, purplish nr bluish beetle about j^ inch long, occurs 



in -May on birch and other deciduous trees (" h r v s o I) o t h r i s a / u r e a, j). 467 



A slender, brownish beetle ranging from about '4 |o nearly i '/ inches in lenglli, bores in 



tlie larval stage under the bark of yellow birch and maple 



Hell a m i r a s c a 1 a r i s, p. 467 

 A brownish, white-striped cater])iller ab(jul i inch long, bores commonly in herbaceous 



stalks and the more tender twigs of maple and ash 



Stalk borer, P a p a i p e m a n i t e 1 a, p. 468 

 A brownish, cylindric beetle wtirks in the stumps of recently cut yellow birch, causing an 



excretion of sap, whii h gums the rust-colored borings to the outside of the affected 



wood Birch bark borer, Dryocoetes sp. p. 468 



A small, black beetle with gray or yellowish gray vestiture, is sometimes bred from willow 



S a p e r d a ni u t i c a, p. 469 

 A blue black, clearwing moth having a wing spread of 's inch, bores in willow in the 



larval stage S e s i a a 1 b i c o r n i s, p. 469 



A steel blue, clearwing moth with a broad abdominal band and the fore wing tips red, 



bores willow canes in the larval stage S e s i a b o 1 t e r i, p. 470 



A black, clearwing moth with three conspicuous yellow abdominal bands, lives in the 



larval stage in Saperda galls on willow and poplar 



Three banded clearwing, Memythrus t r i c i n c t u s, p. 47 i 

 A large, brown, yellow-marked, clearwing moth having a wing spread of i^ inches, lives 



as a larva in willow and poplar trunks A e g e r i a tibialis, p. 472 



A large, brown and yellow-inarked, clearwing inoth having a wingspread of i^ inches, 



lives as a larva in roots of willow and poplar Aegeria a p i f o r m i s, p. 472 



A rather stout, blackish beetle irregularly marked with gray, occurs in June on poplar and 



hickory A c a n t h o d e r e s d e c i p i e n s, p. 473 



Girdling the trunks of sapling jioplars or running a mine around them, causing a swelling 



twice the diameter of the tree, a cviindric, slaty gray beetle about fa inch long 



Saperda c o n c o 1 o r, p. 474 

 A small, brown or black, coarsely juinctured beetle about -'s inch long, may be bred from 



galls of balsam poplar Saperda p o p u 1 n e a, p. 474 



