236 economic entomology 



Lyonetiid^ (Leaf Skeletonizers) 



Apple Leaf Bucculatrix {Bucculatrix pomifoliella Clemens). — 

 (Consult Bull. 214, Cornell.) Adult. — A small moth, }^ inch expanse; 

 fore wings whitish tinged with pale yellow and dusky brown. Hind 

 wings broadly fringed. Appears when leaves unfold. 



Eggs. — ^Laid in May, singly on under side of apple leaves; elliptical, 

 Mo X H25 inch, greenish, iridescent; surface rough. 



Larva. — One-half inch long, cylindrical, tapering at both ends; 

 dark greenish-yellow, with reddish tinge on anterior segments, 

 active. Full grown in July. 



Pupa. — Cocoons dirty white, slender, }^ inch long; six prominent 

 longitudinal ridges; oblong, tapering at both ends; fastened to twigs 

 in groups, in September-October, etc. Hibernates in this stage. 



Birch Leaf Skeletonizer (Bucculatrix canadensisella Chamb.). — A 

 serious pest of birches, skeletonizing the leaves. 



Adult. — A small brown moth, about M inch long; wings crossed with 

 fine white bars. 



Larva. — Slender, green; head brown; tapering slightly toward both 

 ends. 



It spins a small round white moulting cocoon on the twigs or leaf, 

 and later spins a yellowish ribbed elongate cocoon within which it 

 pupates. 



Control. — By parasites and by spraying with arsenical solution. 



TiNEiD^ (Tineids) 



Clothes Moths. — Three injurious species of Clothes Moths are rec- 

 ognized in America: 



(i) Case-making Clothes Moth, (2) Webbing or Southern Clothes 

 Moth, and (3) Tapestry Moth. 



I. Case-making Clothes Moth {Tinea pellionella L.). — So-called 

 because the larva makes a true transportable case. (Consult Circ. 

 36, Bur. Ent., U. S. Dept. Agr.) 



Adult. — A small tineid moth expanding 3^^ inch; head and 

 fore wings greyish yellow; hind wings greyish white and silky. 

 June-August. 



Eggs. — Minute whitish, placed directly on foocj material; hatch in 

 about 10 days. 



