36 Tue West AMERICAN SCIENTIST. 
ON AN APPARENTLY MICROLEPIDOPTEROUS LEAF- 
MINER OF THE VINE. 

By C. H. Tyrer TownseEnn. 
On June 3, 1891, I found, in a vineyard near Las Cruces, N. 
Mex., a leaf-miner in a leaf of the vine. ‘The leaf containing the 
miner was one of the older ones, among the first to be put forth 
in the spring. The tortuous channel of the miner inside could 
be plainly seen, with the latter in an enlarged area at the end of 
the channel near the edge of the leaf. The following description 
is drawn from this specimen. This miner seems to belong to the 
microlepidoptera. It bears quite a striking resemblance to a 
leaf-miner of Populus angustifolia,* from the Canyada Alamosa, 
IN Mex. 
Later, on June 10, 1891, a considerable number of leaves 
were found infested with this miner in a vineyard in Mesilla. 
Examination showed the miners to be pupe, still enclosed in the 
mines of the leaves. An attempt to breed them ended without 
satisfactory results, and they were unfortunately destroyed. 
LARVAL MINER (apparently full grown).—Length, 3% mm.; 
width of anterior segments, 3-5 mm. White; lines and faint 
anterior shading of head, pale yellowish brown. Fleshy; apo- 
dous, consisting of thirteen segments including head. Hlongate; 
wider anteriorly on first three segments, slightly tapering poster- 
iously on last three. Body bare, not even microscopically pubes- 
cent. Head tapering anteriorly, quite deeply emarginate on 
posterior border, its posterior portion and segments 2 and 3 about 
equal in width; 4 to 10 distinctly narrower and about equal in 
width, or 10 slightly narrowing; 11 to 13 gradually narrowed 
from 10, 13 about one-half the width of 10; 2 to 5 and 12 about 
equal in length, or 4 slightly longer; 6 to 11 and 13 very consid- 
erably longer and nearly equal in length; 4 to 11, especially the 
more anterior ones, quite rounded in outline, their sutures eb- 
ing more deeply incised. Head quite triangular in outline 
from above, the tapered anterior portion bearing a sucker-like or 
labella-like mouth organ, which appears like a cap or transverse 
enlargement attached by a neck-like constriction to the anterior 
* See article ‘‘On a seemingly microlepidopterous leaf-miner of the nar- 
row-leafed cottonwood,’’ Can. Ent. 18938. 

