354 
verse above, not as large as third antennal segment, the latter as long as 
high; face concave in center; genal bristle very short; palpi slightly 
broadened. Thoracic dorsum rather densely and evenly setulose on disc, 
with two pairs of dorsocentrals; basal pair of scutellar bristles shorter 
than apical pair. Fifth abdominal tergite about as long as fourth. Legs 
normal. Wings narrow; veins 3 and 4 parallel apically, penultimate sec- 
tion of fourth vein slightly longer than ultimate section of fifth, the latter 
longer than outer cross-vein. 
Length, 1 mm. 
Type, Muncie, Ill., July 5, 1914 (J. R. Malloch). 
This species very closely resembles simplex Loew, but differs in color 
of legs, in having the third and fourth veins parallel, the fifth abdominal 
tergite longer, and the genal bristle shorter. Both species have the discal 
thoracic setulae continued to posterior margin between the dorsocentrals 
Larval host unknown. 
LEUCOPIS MINOR, SP. Nn. 
Male—Differs from the preceding species in having the spots on 
second tergite small and widely separated, the posterior margin of first 
tergite gray pruinescent, the legs black, with bases of all tibiae and of 
mid and hind tarsi yellowish. 
Genal bristle larger than in parallela. Discal thoracic setulae dis- 
continued proximad of posterior dorsocentral; basal scutellar pair of 
bristles slightly smaller than apical pair. Veins 3 and 4 subparallel 
apically; penultimate section of fourth vein distinctly shorter than- ulti- 
mate section of fifth, the latter much longer than outer cross-vein. 
Length, 1 mm. 
Type, Dubois, Ill., August 9, 1917 (J. R. Malloch). 
A female in poor condition but which appears to belong to this 
species was taken at Champaign, IIl., July 24, 1889 (Marten and Terrill). 
Larval host unknown. 
Lrvucopis AMERICANA, Sp. nN. 
Male and Female.—Black, densely grayish white pruinescent, the 
abdomen in some specimens almost silvery. Frons with the interfrontalia 
darker than the orbits, appearing vittate; second antennal segment con- 
spicuously whitish pruinescent. Thorax with or without two brown 
vittae. Abdomen normally as in major, the central spots sometimes 
obsolete. Legs with a larger amount of yellow than in minor, the base 
of fore metatarsus nearly always yellowish. 
Third anfennal segment higher than long. Discal setulae as in 
minor. Fifth tergite in female very short. Legs normal. Veins 3 and 4 
generally slightly but noticeably convergent apically; position of outer 
cross-vein variable; wing broader than in minor. 
Length, 2—2.5 mm. 
