1*70 Journal New York Entomological Society. [Voi. iv. 



Color translucent whitish with a slight green tint after the larva has 

 eaten. Skin smooth. Length .7 to i.i mm. The larva feeds normally 

 throughout the stage. 



Stage II. — SetK rudimentary, the mature structures well assumed. 

 More rarely distinct, short, black setae persist, arranged two on the sub- 

 dorsal ridge, one on the lateral ridge. Subdorsal ridge rather square, 

 dorsum flat, rounded ; tail quadrate, sides concave. Lateral ridge 

 moderate, subventral region small, retracted. Depressed spaces all 

 present as in the mature larva, deep, pit-like, the latticed ridges narrow, 

 distinct, composed of one row of large, clear, appresscd granules. 

 Color pale greenish without marks. The larva eats a track the width of 

 its body, but only two or three times as long as wide. Length i .1 to 

 I .7 mm. 



Stage III — Elliptical, tail rounded quadrate; all pale green. 

 Skin structure the same as before. Usually the setae are so rudimentary 

 as scarcely to be visible; more rarely, quite distinct. The larva has 

 the shape and appearance of the mature form, but is without marks. 

 Toward the end of the stage a yellow subdorsal line may appear, with a 

 round reddish patch centrally on the back. Length 1.6 to 2.2 mm. 



Stage IV. — Elliptical, both ends rounded, the anterior more ob- 

 tusely ; dorsum arched, the highest point a little before the middle. 

 Ridges low, not prominent, the subventral ridge shorter than the lateral. 

 Body smooth, not tuberculate nor scalloped, setae nearly obsolete. Skin 

 coarsely clear granular, except on the large depressed spaces which are 

 arranged as in the mature larva. The granules along the lateral ridge 

 are subpapillose, slightly divided at the tip in some cases. Subventral 

 space more coarsely granular. Color light yellowish green, a trace of 

 reddish along the dorsal space on joints 6 to g. Length 2.2 to 2)-2) ™™- 



Stage V. — Subdorsal ridge rounded, lateral moderately prominent, 

 smooth, as before; tail subquadrate, a little contracted at the base. 

 Green, a wine red shading occupying the dorsal space on joints 7 to 9 

 with traces of a yellow subdorsal line. Skin surface much as before, 

 but the granules on the latticed ridges are more numerous, forming 

 more than one row. They resemble angularly appressed glass beads. 

 Setae obsolete, scarcely discernible except at the ends of the body. Sub- 

 ventral depressed areas rather well developed, comma-shaped, com- 

 posed of the larger upper one (7) joined to a smaller lower one (8); 

 the granules are more pointed and less well developed than above the 

 lateral ridge. Later, in the larva observed, the dorsal patch became 

 pentagonal, vinous red, pale centrally and covering three greenish im- 



