1 48 
Psyche 
[June 
surface of abdomen. Pterostigma closed basally. Vein 2 A of fore- 
wing joining vein iA. First segment of Rs in hindwing present or 
absent. Vein M in hindwing one-branched. Third ovipositor valvula 
deeply bilobed apically. 
Genus Compsocus Banks 
Compsocus Banks, 1930, Psyche, 37:183. 
Diagnosis. — Antennae of 14 segments. Frons approximately equal 
in length with postclypeus in anterior view. Pretarsal claws each 
with two preapical teeth. First segment of Rs in hindwing present. 
Minute scale-like structures present on forewing surfaces. Sperma- 
thecal duct straight. 
Type species. — C. elegans Banks. 
Compsocus elegans Banks 
Compsocus elegans Banks, 1930, Psyche 37:183-184, pi. 9, fig. 4. 
Male. — Measurements (Table I). 
Morphology. — Lacinial tip (fig. 89) with median cusp slightly 
divided ; lateral cusp with apex simple, bearing two low, rounded 
denticles rising at same level near apex. Anterior femur with row 
of 15-16 denticles (fig. 79), some of them bifid. Hypandrium (fig. 
84) with apical margin curved, slightly impressed in middle. Phal- 
losome (fig. 85) in form of letter Y but closed posteriorly, the stem 
about half length of arms; each arm dividing about halfway along 
its length to produce a more membranous lateral branch and a more 
sclerotized median branch, the lateral branch terminating as a sac 
surrounding median branch and becoming closely associated medially 
with complex apical sclerites of phallosome; this sac bearing field of 
pores on outer margin near its posterior end. Paraproctal sensorium 
with 5-6 trichobothria and 7 shorter setae lacking basal rosettes. 
Epiproct with field of closely set rather stout setae at its tip. 
Color (in alcohol). — not recorded except for wing pattern, due 
to very poor condition of specimen. Forewing (fig. 82) complexly 
mottled with gray, pale brown, and colorless spots, the gray mostly 
in 5 transverse spots: an obscure one at wing tip, a small one from 
distal end of cell R a through cell R 3 and cell R 5 ; a large one cover- 
ing most of pterostigma and extending posteriorly through base of 
cell M 2 ; slender one from wing margin just basad of pterostigma 
back through cell M 3 ; wide one from middle of costal cell through 
anal cells just basad of nodulus; remainder of wing membrane largely 
pale brown except for 3 colorless (or nearly so) spots: one through 
