420 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 11 
a 
A NEW SPECIES OF SCIARA BRED FROM RED CLOVER 
CROWNS 
By F. W. Pettey , Cornell University , Ithaca, New York 
Professor A. C. Burrill of Moscow, Idaho, has sent to the Depart¬ 
ment of Entomology of Cornell University, some specimens of a Sciara 
reared by him from red clover crowns. An account of the life history 
of the insect by Professor Burrill will follow this article. The species 
is apparently undescribed. 
Sciara trifolii n. sp. Male. Length 1.2 mm. Head black; antennae fuscous, 
over two-thirds the length of the body. Thorax; mesonotum piceous, shiny, pleurae 
fuscous. Abdomen black, intermediate segments with anterior two-thirds fuscous, 
hairs pale yellow; hypopygium brown, near its base 
with a small median ventral lobe (Fig. 15, b) margined 
with about 8 setae; clasper (Fig. 15, a) with an apical 
tooth, and with about 4 stout, subequal, "scattered 
spines and with one proximad, longer, more slender 
spine along the inner margin. Coxae and palpi luteous; 
trochanters black; tibiae dull yellowish-brown; tarsi 
fuscous to black; hind tibia and tarsus about equal in 
length. Wings hyaline; veins brown, rather strongly 
marked; media and cubitus without setae; petiole of 
cubitus less than one-half the length of the base of 
media; Ri ends at least one-sixteenth of the wing length 
proximad of the forking of M; the base of R s distad 
of the mid point between the humeral cross vein and 
the tip of Ri; M 2 ends distad of the termination of Rg. 
Twin Falls, Moscow, Idaho. October 3, 1917. 
Fig 15 Sciara trifolii, a Figures a and b are magnified 300 diameters. 
Female. Length 1.5 mm. Colored like the male. 
Moscow, Idaho. (See PI. 13, Figs. 3 and 4 for wing 
venation.) 
clasper, b lobe of hypopygium 
(Original). 
This species is closely related to S. pauciseta Felt, from which it may 
be distinguished by the characters of the hypopygium and the more 
retracted position of the tip of R s . 
Described from 2 males reared October 27, 1916 and October 3, 
1916, and 10 females reared October 27, 1916, from the crowns of red 
clover, Moscow, Idaho. 
Types in the Cornell University collection. Co-types in the Idaho 
Agricultural Experiment Station collection. 
