486 
ANNUAL REPORT OF NEW-YORK 
larvae of insects of this kind are long slender footless worms, 
tapering gradually to a point at the head, the opposite end being 
blunt. They are of a shining glassy white color, the viscera 
and alimentary matter contained therein showing more or less 
distinctly through their semi-transparent skins. They are more 
than double the length of the pupae. 
The Pupa of this specios is 0.12 long, though slightly variable in its dimen¬ 
sions. It is not enclosed in a cocoon, and its surface is somewhat glutinous, 
causing particles of dirt to adhere to it. It is of an elongated ovate form, 
pointed at one end and rounded at the other. Its head, thorax and wing and 
leg cases are black, the abdomen dull pale yellow, some specimens showing a 
short broad pale dusky band upon the back, on each segment, and some have 
a faint dusky stripe on the opposite side, from the leg cases to the tip. The 
thorax has the same color as the abdomen. The region of the throat is dull 
yellowish, more or less tinged with dusky. 
The flies when at rest and with their wings folded and laid 
flat upon their backs have a close resemblance to the Hessian 
fly in every respect except that their legs are not so long and 
slender. And they pertain to the same group of insects with 
that, in the Family Tipulid.® and Order Diptera. They belong, 
however, to a different genus, named Molobrus by Latreille, 
which may be recognized by its having five longitudinal veins 
in its wings, the middle one of which is forked. And the pre¬ 
sent species, which appears to be different from those which have 
hitherto been described, may be named 
The Apple midge, Molobrus Mali. It measures 0.15 in length to the tips 
of its wings. The head is black, spheroidal, transverse. The thorax is black 
and smooth, the scutel separated from it by a deep wide fissure. The abdo¬ 
men is dusky, almost black, with a bright yellow band at each of the sutures; 
beneath it is yellow with the middle of each segment occupied by a large square 
dusky spot; its tip is black, as is also the ovipositor, which is inclined down¬ 
ward and is composed of two pubescent linear valves. The legs are about as 
long as the body and are black as are the antenn* also, though of a less deop 
tint than the head and thorax. The poisers are dusky. The wings are dull 
hyaline tinged with smoky, and are a fourth longer than the abdomen. In the 
female the antennae are half the length of the body and composed of fifteen short 
cylindric joints half as broad as long, clothed with short bristles which inclino 
towards the tip, the joints very slightly diminishing in diameter outwards and 
but slightly separated from each other. The two basal joints are thicker and 
shorter than the following ones, as broad as long, and compacted together, the 
second and third joints being most widely separated from each other. 
The flies belonging to this genus are all small, like the one we 
have described, and of black or blackish colors. Most of the 
larvae which have been noticed have been found in the roots of 
