348 ECONOMIC ENTOMOLOGY 



the back; coiled when at rest; 8 pairs of prolegs; full grown in a month; 

 entering soil and forming a cocoon. Hibernates. 



Pupa. — Formed in May. 



Rose Saw-fly Slug (Endelomyia rosa Harr.). — This insect is often 

 injurious to the leaves of roses. The slug-like larvae eat the upper 

 surface of the leaves. The pupae, are found in the ground. There 

 are two broods each year; June and August. 



Cherry Saw-fly Leaf Miner {Profenusa collaris M&cG.). — (Consult 

 Bull. 411, N. Y. Ag. Exp. St.) This insect has been injurious to cherries 

 in New York State for several years. It produces blister-like areas 

 on leaves. The adult is a small saw-fly 3''7 inch long, appearing in 

 May, and the larva passes part of its existence in the leaf as a miner 

 and in the ground in an earthen cell. Pupation occurs in late April 

 or early May. 



Plum Web-spinning Saw-fly (Neuroloma inconspicua Norton). — 

 Forms ugly nests in the leaves of plum and cherry. 



Adult. — A saw-fly, }^ inch long; wings hyaline with a faint fuscous 

 band behind stigma; body, coxae and tarsi black, legs reddish. May- 

 June as leaves expand. 



Eggs. — Smooth, elongate, yellow; deposited in two or three rows 

 along mid-rib of under surface of leaf. Hatch in about 8 days. 



Larva. — Three-fourth inch long, grey above and yellow or pinkish 

 below; head yellow; thoracic shield and anal segment black; full grown 

 in a month; feeds on leaves under webs. Passes the winter in an 

 earthen cell 6 inches below the surface of the ground. 



Pupa. — In early spring pupa forms near the surface. 



Pear Slug {Eriocampoides Umacina Retzius, Caliroa cerasilAnn.). — 

 (Consult Circ. 26, Div. Ent., U. S. Dept. of Agriculture.) The slug-like 

 larvae of this European insect are often found feeding on the surfaces 

 of the leaves of pear, plum and cherry. 



Adult. — A glossy black saw-fly, 3^^ inch long; wings with a smoky 

 band across the middle. May and June, and August. Two genera- 

 tions in the North but one along the Lower St. Lawrence. 



Eggs.- — Deposited beneath the upper surface of leaf in a cut made 

 by ovipositor; hatch in 2 weeks. 



Larva. — At first white with yellowish-brown head; later, darker 

 with brownish-black head; body covered with slime like a slug; anterior 

 portion of body enlarged; 7 pairs of prolegs. Full grown in about 



