CLASSIFICATION AND DESCRIPTION OF COMMON INSECTS 347 



yellowish band; abdomen of female with front third black and remainder 

 reddish-yellow. Middle of June. 



Larva. — Smooth, bright green, ^^ inch long, feeding within a tent 

 formed by webbing together the terminal leaves. Hibernates. 



Dock False Worm {Ametastegia glabrata Fallen = Taxonus 

 nigrisoma Norton). — ^(Consult Bull. 265, Bur. Ent. U. S. Dep. Ag., 

 1916.) The green worm-like larva of this saw-fly often burrows into 

 apples to hibernate. Its natural food plants are dock and related 

 plants. Four broods a yea-. 



Elm Saw-fly (Cimbex americana Leach). — Feeds on leaves of 

 elm, willow, poplar, maple and basswood. 



Adult. — A saw-fly with head and thorax black; body steel-blue with 

 three or four oval yellowish spots on each side; wings smoky brown; 

 legs bluish-black; tarsi yellowish; antennae short and knobbed. May. 



Eggs. — Elongate or oval, flattened, clear; laid in the leaf. 



Larva. — Three-fourths inch long; yellowish-white, coiled, with a 

 black stripe along the middle of back; 8 pairs of prolegs; legs 

 greenish-white. Matures in July-August, and forms a tough, coarse 

 silken cocoon at base of tree where it hibernates. 



Pupa. — Formed in spring in cocoon. 



Parasite. — Opheltes glaucopterus Holmgr., an ichneumon. 



Raspberry Saw-fly {Monophadniis rubi Harris). — (Consult Bull. 150, 

 N. Y. Agr. Expt. Station, Geneva.) Adult. A saw-fly, 34 inch long; 

 female with body black, with segments of abdomen from 2 to 6 

 yellowish-white, and under side rusty brown; male black with shoulders 

 yellowish-white; May. 



Eggs. — Pear-shaped, yellowish-white, ^20 inch long; inserted under 

 upper cuticle of leaf; hatch in 7 to 10 days. 



Larva. — At first pale yellowish-green; covered with whitish spiny 

 tubercles; mature larva ^4 inch long, green, covered with barbed spiny 

 tubercles, brown on back and white on sides; feed for 10 days, then enter 

 soil and form small, brown, oval cocoons. Hibernate in cocoons. 



Pupa. — Formed in May, and lasting a few days. 



Strawberry Saw-fly {Harpiphorus maculatus Norton). — (Consult 

 Bull. 54, Mo. Agr. Expt. Station.) Adult. A black saw-fly with a 

 row of light spots on sides of abdomen; } :4 inch long; May. 



Eggs. — Inserted beneath epidermis of leaf; hatch in 2 weeks. 



Z,crM.— Sli^-like, J^ inch long, yellowish with a pale stripe along 



