372 NEW YORK STATE MUSEUM 
nounced in color, both the black and reddish being more 
vivid; maxillary palpi black, and shorter than the antennae. 
Thorax black above with sparse yellow hairs; legs some- | 
what lighter in color, tip of the tarsi not black; hairs } 
upon the legs longer than those of the female. Wings 
hyaline, veins and base yellowish brown. Abdomen black with 
ee AT 
grayish white posterior margins to the segments dorsally and | 
laterally, and covered with longer yellowish hair. Described 
from two bred specimens. 
Larva. Average length when full grown 7mm to 8mm, sub- 
cylindric, the club-shaped posterior third of body being twice as 
stout as the thoracic joints, and joint 4 the most constricted. — 
Translucent when living, dirty white in alcohol. Immaculate in © 
a very few specimens; distinctly marked in the great majority 
with brownish dorsal cross bands in middle of joints, leaving free 
a white mediodorsal longitudinal line. Thoracic joints with 
three irregular rings of the same color; underside more or less 
irregularly spotted with brown. Head subquadrate, horny, yel- 
lowish brown, with a number of brown spots and lines in regular 
order, and two roundish, approximate ocellate, black dots on 
each side under the skin, and seemingly rudimentary organs of 
sight, from which the future eyes originate. Antennae uni- 
formly pale, three jointed, about one third as long as greatest 
ee 
width of the head; joint 1 very stout, fully four times as thick as © 
2, which is a little longer than 1, straight, slightly tapering © 
toward the tip. Joint 3 extremely small, a mere triangular tip; — 
mentum subtriangular, with. apex cut away, and replaced by © 
three groups of very small teeth, of which the central group con- © 
sists of three teeth, the middle one largest; and the groups on 
sides, of four teeth, of which the second from center is largest. 
Sides of mentum, near the apex, with two small teeth each; all © 
the teeth are chitinous and black; a long erect bristle, pointing 
upward and inward, near each side of mentum; labrum horny, 
densely covered with hair; mandibles resembling in shape the © 
profile of the inverted last joint of the human thumb, with a 
series of teeth in place of the nail. Teeth difficult to see, owing 
to the, presence of five distinct brushes of hair; on extreme 
lower tip of mandibles three large teeth; below them a series of 
11 slender and very pointed teeth, of which the first two are the 
smallest, teeth 3 to 9 increasing and teeth 10 and 11 decreasing 
gradually in length; a second series of teeth below them consists 
of two triangular teeth, of which the first is largest. -Maxilla 
stout, fleshy, with an internal thumb-shaped lobe; maxillary pal- 
pus two jointed, first joint cylindric; second very short, crowned 
with a regular circular row of short spines or warts; labium 
