54 THE CANADIAN ENTOMOLOGIST. 



MICRO-LEPIDOPTERA. 



BY V. T. CHAMBERS, COVINGTON, KV. 



I 



LITHOCOLLETIS. 



(For the generic characters, see Stain tons Nat. J list. Tiueina, vol. 2, or Dr. 

 Clemens Paper in the Proc. Acad. Nat. Hist., Phi la., Nov., 1 859.) 



This genus comprehends a large part of the genus Argyromiges Stephens, 

 and is one of the largest among the Tineina. The number of described 

 European species is very great ; but in this country, so far as I am advised, 

 but 27 species have heretofore been described. Of these. Dr. Fitch 

 (Reports, vol. j ) describes 7, one of which. L. (Argyromiges) robiniella, is 

 re-described by Dr. Clemens (loc. cit. supra), it having been originally 

 described by him in an English publication. Dr. Clemens (loc. cit.) 

 describes also 17 new species; and Dr. Packard, in his "Guide," 

 describes 3 additional new species. I propose, in these papers, to 

 catalogue such of the above-described species as I have met with in 

 Kentucky (near to Cincinnati. Ohio), with notes upon their habits, varia- 

 tions, &c, and to describe such new species as I have met with. 



The genus presents, in the larval state, two distinct forms. 



Group 1st. — Larva cylindrical, with distinct thoracic, ventral, and anal 

 feet. It mines the under surfaces of leaves, and the complete mine is 

 tent-like, and the leaf more or less drawn or folded. 



Group 2nd. — Larva flat : apparently, but not really, apodal. It mines 

 the upper surfaces of leaves, and the mine is usually flat, or simply a little 

 drawn or puckered along the centre, and a little tent-like. But the rule is 

 not invariable that the mine and miner of the upper surface is flat, and the 

 miner of the lower surface cylindrical, and the mine tent-like. There are 

 exceptions to both sorts of mine and miner. And from not being aware 

 of these exceptions, Dr. Clemens (Proc. Ent. Soc. Phila., 1863, 7\ 2, p. 8) 

 criticises a species ( Anacampsis robin iella ) which he says does not exist. 

 But I have now before me as I write numerous specimens of the larva as 

 described bv Dr. Fitch. The mine, however, is as vet flat. And I have 

 other instances of the other case, cylindrical larvae in a flat mine on the 

 upper surface. These larvae are usually marked with a translucent spot on 

 top of each side of each of the first three segments following the head, and 

 with a transverse spot on those and the following segments. This macula 

 is, in form, a thin double convex, an ellipsoid, or a parallelogram, and is 



