38 NEW YORK STATE MUSEUM 
tapering posteriorly. Skin coarsely shagreened. Posterior extremity 
roundly truncate and with two submedian pairs of rather obtuse 
tubercles, the outer pair distinctly smaller. 
Male. Length 1.5mm. Antennae a little longer than the body, 
thickly haired, reddish brown, yellowish basally; fourteen segments, 
the fifth with stems three and four and one-half times their diameters 
respectively. Palpi; first segment short, stout, second with a length 
fully three times its diameter, third a little shorter than the second, 
fourth one-half longer than the third. Face yellowish. Mesono- 
tum dull reddish, the submedian lines yellowish, sparsely haired. 
Scutellum deep red, postscutellum whitish transparent. Abdomen 
with the basal half deep salmon, the distal segments yellowish 
transparent. Genitalia a variable yellowish and yellowish red. 
Wings hyaline, with a violet iridescence. Halteres yellowish trans- 
parent, the knob reddish. Coxae and femora basally, yellowish, 
the remainder of the legs a variable light straw; claws long, slender, 
evenly curved, the pulvilli shorter than the claws. Genitalia; basal 
clasp segment long, moderately stout; terminal clasp segment short, 
stout; dorsal plate short, deeply and triangularly emarginate, the 
lobes truncate or very broadly emarginate and sparsely setose; 
ventral plate long, broad, broadly and roundly emarginate, the 
lobes short, narrowly rounded; style long, slender. 
Female. Length 2.5 mm. Antennae extending to the fifth 
abdominal segment, sparsely haired, fuscous yellowish, yellowish 
basally; fourteen segments, the fifth with a stem three-fourths the 
length of the cylindric basal enlargement, which latter has a length 
three times its diameter and slightly constricted near the basal third; 
terminal segment, basal enlargement with a length three times its 
diameter, the appendage stout, fingerlike. Palpi; first segment 
irregular, short, the second with a length nearly three times its 
diameter, the third as long as the second and the fourth about one- 
third longer than.the third. Face yellowish. Mesonotum reddish 
brown, the submedian lines fuscous yellowish, sparsely haired. 
Sceutellum and postscutellum mostly deep red. Abdomen pale 
yellowish orange. Halteres pale yellowish, the knob reddish. Coxae 
yellowish; femora and tibiae fuscous straw, the tarsi darker, the 
pulvilli nearly as long as the moderately stout claws. Ovipositor 
yellowish, stout, about one-half as long as the abdomen; terminal 
lobes lanceolate and sparsely setose. Cecid. a2252. 
Name, common and scientific. This wheat midge, like a number 
of injurious insects, has been known by a variety of names. It has 
been shown above that there are at least two wheat midges in Europe 
and since it may be convenient to distinguish this species from the 
one it has hitherto been supposed to be, it is suggested that this 
insect be given the common name of the Moselle wheat midge, since 
it was in this region that it first attracted notice as a pest. 
This species was originally described as Cecidomyia 
mosellana in 1857. It was discussed later by Fitch under the 
name Cecidomyia tritici in the belief that the insect he 
