%\t Canabian dMoniologist 



VOL. III. LONDON, ONT., NOVEMBER, 1871. No. 9 



MICRO-LEPIDOPTERA. 



BY V. T. CHAMBERS, COVINGTON, KY 



Continued from Pa#e 14i». 



LITHOCOLLETIS. 



2 j. LitJiocolleiis f Ornatella. N. sp. 



This is the insect previously mentioned in these papers as Leucanthiza 

 Ornatella. At first I was inclined to place it in Lithocolletis, but a consi- 

 deration of some of its peculiarities induced me to place it provisionally 

 in Dr. Clemens" genus, Leucanthiza. On examination of the neuration of 

 the wings, however, and of some other points in its structure and habits, 

 it seems to me to belong more properly to Lithocolktis, though it differs 

 from it in some respects and approaches Leucanthiza, and more remotely. 

 Phyllocnistis and Lyonetia. The tuft is small, resembling that of Leucati 

 thiza more than Lithocolletis. The palpi, ascending in the living insect as 

 in both of those genera, are, after death, usually, not simply drooping 

 as in Lithocolletis, but laid side by side upon the coxa? as in Lyonetia. 

 Sometimes, however, they are simply drooping. (Where the " Micro" is 

 killed by the fumes of chloroform — as I usually kill them — the positions 

 of the palpi, tongue and wings are variable, and do not afford good 

 generic characters. ) The larva, perhaps, resembles that of Leucanthiza 

 most nearlv, having the head too much rounded and the sides of the 

 segments more distinctly mammillated than the flat larva of Lithocolletis. 

 It also usually leaves the mine and pupates in a yellowish silken nidus, in 

 which it resembles Leucanthiza and Lyonetia more than it does Lithocol- 

 letis. The wings, however, have fewer veins than those of either Leucan- 

 thiza or Lyonetia. and approach very nearly in their neuration to some 

 species of Lithocolletis, though also differing slightly from it. lyonetia 

 has a smooth head, longer palpi, and the basal joint of the antennae 

 expanded so as to form an eye-cap, and there are four marginal nervules 

 emitted from the sub-costal vein. The mine is a long narrow winding track 

 like that of Phyllocnistis, and in all of these respects it differs from this 



