Tlie Apple- Worm and the Apple-Maggot. 343 



as already stated, it may be expected to make its first appearance about 

 the middle of July. About this time, therefore, it would be well to keep 

 a careful lookout for it. 



It only remains, as this appears to be a species hitherto unknown to 

 science, to give a brief description of it in a footnote, so that, for the future, 

 it may be scientifically recognizable. Of the genus Trypeta, there are forty- 

 two described species found in North America;* and from all of these it 

 differs essentially, though it comes pretty near to the Irypeia cingulata of 

 Low. I may add, that Baron Osten Sachen, to whom I have forwarded a 

 specimen, agrees with me in referring the species to the genus Trypeta.\ 



Benjamin D. Walsh. 



* See Low's Dipt., N. A., pp. 64-102. 



t Trvpeta pomonella, new species. — Headx\x^\.-xe.A ; eyes and all the bristles black ; front edge of the 

 face and hind orbit of the eye more or less tinged with white. Thorax shining black : a humeral fillet, and 

 all but th^ extreme base of the scutel, white ; on each side of the thorax, above, a gray fillet, opaque, with 

 short, dense, gray pubescence. A bdomen black, pubescent ; top edge of the four basal segments white above, 

 — beneath, except the tip and a more or less distinct medial fillet, dull rust-red ; oviduct sho-t. Legs pale 

 rust-red ; four hind thighs, except the knees, black ; tips of the four hind tarsi, and sometimes the front 

 thighs, tinged with dusky. Wings whitish-glassy, banded with dusky, somewhat in the form of the letters 

 IF, — the I placed next the base of the wing, and its lowei end uniting rather indistinctly with the lower end 

 of the F ; the base and extreme tip of the wing being always glassy. Length of body, from fi.'teen to twen- 

 ty hundredths of an inch ; expanse of wings, from thirty to forty-three hundredths of an inch. Six males 

 bred from apple July 15 to 23 ; tvs'o males and one female bred from haws July 23 to 28. 



The Larva is of a greenish-white color, from fifteen to twenty hundredths of an inch long, and about 

 four and a half times as long as wide, cylindrical behind, with the tail-end squarely docked, tapering in front 

 from the middle of the body to the head. Head pointed, but narrowly emarginate in front ; its inferior surface 

 with two slender bluntish coal-black hooks, projecting in front when the mouth is protruded, at the base of 

 which there is a smaller pair connected with the base of the others like the antlers on a stag's horn. At the 

 base of the first segment, behind the head, a dorso-lateral, transverse, pale-brown, flattish, rough tubercle. 

 Last segment below with two pale-brown, homy, rough tubercles, each composed of three minute thorns 

 longitudinally arranged, and above with two whitish retractile ones, each pair of tubercles transversely 

 arranged. 



The Pupa scarcely differs from the larva except in being of a pale yellowish-brown color, and con- 

 tracted in length so as to approximate to an oval form, and be only two and a half instead of four and a 

 h.alf times as long as wide. 



