50 N.C. AGR. EXP. STA. BUL. 239 
usually present and variable interspecifically in extent, veins elevated and dis- 
tinct, with four apical cells, the inner apical cell very narrow, fourth apical cell 
either sessile or petiolate, its base slightly or greatly more proximal than base of 
third apical cell, texture usually coriaceous except for membrane and with fine 
close-set pubescence; forewings of female in rest position exceeding apex of ovi- 
positor. Hindleg in rest position with knees not attaining posterior proepimeral 
margin; femoral setal formula 2:0:0, first tarsomere with length usually greater 
than combined length of second and third tarsomeres, with setae of plantar sur- 
face of first tarsomere either irregularly arranged or in longitudinal rows. 
Male genitalia: Pygofer not strongly produced posteriorly, with numerous dis- 
persed microsetae (often not visible on disk), and with fewer macrosetae, without 
processes. Plates subtriangular, abruptly narrowed at base of apical third, 
separate throughout their length, extending posteriorly as far as or farther than 
pygofer apex, with numerous irregularly arranged microsetae. Style extending 
much farther posteriorly than apex of connective, without preapical lobe, apex 
directed ventrally and subacute. Connective Y-shaped with arms widely 
divergent, or triangular, with a strong median keel. Aedeagus symmetrical, in 
lateral aspect somewhat U-shaped, articulated with connective, without pro- 
cesses, genital orifice anteapical and ventral. Paraphyses paired, short, and 
acute; occasionally apparently not joined at their bases. 
Female abdominal sternum VII strongly produced, with posterior margin 
acute medially. Ovipositor second valvulae each with afew (6-9) rounded weak 
primary teeth on dorsal margin in apical third, without secondary denticles, 
apex subacute, with minute regular denticles on apicoventral margin. 
The range of Trichogonia is from Ecuador to Bolivia. At the time I visited 
Europe, because the male genitalia of the nominate species were closely similar, I 
considered all of them synonymous. Subsequent examinations of a number of 
specimens yielded little intergradation in color to support this assumption, and 
older authors are followed in considering them good species, but many more 
collections are desirable to test the accuracy of this. Following this course has led 
to the omission of 7. intermedia Schmidt from the following key, because no 
specimens were availabe for comparison, and to the description of a new species, 
below. 
Trichogona Breddin is related to Stehlikiana, new genus, in the structure of 
both male and female genitalia, but in female Trichogonia there are no 
macrosetae on the female pygofer, and the microsetae extend farther onto the 
disk. In the males, the genital orifice is terminal in SteAlikiana instead of an- 
teapical as in Trichogonia. Although I have not seen females of Cephalogonalia 
Evans, it is undoubtedly closely related to both of the above genera. In 
Trichogonia, vein Roy is obsolete in the hindwing, in contrast to Cephalogonalia 
and Stehlikiana (except S. crassa (Walker)). Similarities in the female genitalia 
of Trichogonia and Stehlikiana to Graphocephala nigrifascia (Walker) are probably 
indicative of a relationship to the Graphocephala generic group. 
It should be noted that although many specimens of Trichogonia are easily 
recognized by their dense pubescence, a number of museum specimens have ap- 
parently been rubbed nearly smooth. In these the pubescence is nearly always 
apparent on the genae beneath the eyes and on the proepimera. 
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