1945] Tropiduchidce and Kinnaridce 125 
Southia differs from Paroeclidius Myers (type, P. luizi Myers, 
seen) in the shape of the vertex, in the length of the first seg- 
ment of the antenna and in the number of subapical cells; from 
Oeclidius Van Duzee in the lower lateral carinae of the frons, in 
the more prominent median carina on the clypeus, and in the less 
slender legs, as well as in the characters mentioned previously. 
In superficial appearance this insect is like Oeclidius fulgidus 
Van Duzee (type seen) though it lacks the pallid scutellar apex. 
Subfamily Prosotropinae 
Quilessa Fennah 
Fennah, 1942, Proc. Ent. Soc. Wash., 44, 5:103. 
Genotype, Q. lutea Fenn. loc. cit. 104. 
Quilessa tristis sp. nov. 
(figs. 1, 20, 38, 39) 
Female. Length, 2.1 mm.; tegmen, 2.7 mm. 
Piceous; rostrum, fore and middle legs and hind tarsi pale 
testaceous, antennal collar and apical margin of first antennal 
joint narrowly pallid, postfemora fuscous, posttibiae suffused 
fuscous, pale at apex, membrane of abdomen red. 
Tegmina hyaline, heavily suffused smoky-brown on basal 
third, between posterior claval vein and commissural margin, 
in distal part of costal cell, in a broad band around apical mar- 
gin extending inward as far as subapical cells, and slightly at 
Cu, in the posterior subapical cell; veins piceous, wings hyaline, 
faintly clouded fuscous distally, veins dark. 
Pregenital plate large, quadrate, slightly broader than long, 
in ventral view with lateral margins slightly diverging distally; 
posterior margin shallowly concave, interrupted in middle by 
an almost semicircular plate directed caudad. 
Ventral (3rd) valvulae of ovipositor broad, expanding dis- 
tally, apical margin oblique, minutely crenulate; dorsal (1st) 
valvulae with more sclerotized portion sinuately tapering to a 
bluntly rounded apex, a large semilunate translucent lobe pend- 
ent from its lower border. 
Described from a single female taken in Maricao forest, 
2,000-3,000 ft., Puerto Rico, by P. J. Darlington (May 30- 
June 2, 1938). This species differs from others of the genus in 
the shape of the pregenital plate and in the tegminal coloration. 
