254 N. C. AGR. EXP. STA. BUL. 239 
2:1:1:1 or 2:1:1; length of first tarsomere slightly greater than combined 
length of two more distal tarsomeres and with two parallel rows of small setae 
on plantar surface. 
Male genitalia: Pygofer strongly produced posteriorly, posterior margin 
concave, macrosetae few, irregularly arranged on posterior half; pygofer pro- 
cess arising at ventral limit of posterior concavity, extending dorsally and 
medially, crossing its complement. Plates slender and triangular, gradually 
tapering, not extending posteriorly nearly as far as pygofer apex, macrosetae 
not uniseriate. Style extending posteriorly well beyond apex of connective, 
with an apicomesal angle. Aedeagus slender and elongate, curved gradually 
posterodorsally, bifid apically, with a pair of slender processes, shorter than 
shaft, arising ventrally on atrium, extending more strongly dorsally than shaft. 
Paraphyses vestigial (fig. 205¢) in lectotype of O. trifoveolata Melichar. 
Female abdominal sternum VII slightly produced and with posterior 
margin broadly convex, slightly notched medially (trifoveolata), or not. Second 
valvulae of ovipositor each with dorsal margin strongly convex in portion 
beyond basal curvature and bearing numerous regular primary teeth almost 
to apex, the primaries sloping and bearing small secondary denticles, with an- 
teapical dorsal and posteroventral denticles. Pygofer well produced with 
posterodorsal margin obliquely truncate and posteroventral margin slightly 
sinuate, macrosetae sparse, located before apex, parallel to posteroventral 
margin, and on latter. 
Species of Orechona Melichar are blunt-headed with the apex of the head 
slightly concave in dorsal view, with the pronotum wider than the head and 
with concave lateral margins. The genus is known only from Ecuador and 
Brazil. 
Orechona resembles Chichahua, new genus, in the contour of the crown, and 
in the form of the abdominal sternum VII of the female. The styles and con- 
nective of O. trifoveolata Melichar are very close to C. stygiana, new species. The 
paraphyses, present or absent in Chichahua, are vestigial in the only male of 
Orechona studied. The genera are readily separable on the 2:1:1 hind femoral 
setal formula (2:0:0 in Chichahua) and the convex clypeus (concave in 
Chichahua) of Orechona. 
I have seen only the male lectotype and two additional females of O. 
trifoveolata and the female lectotype of O. superba Melichar. The last was not at 
hand when the above description was written, and no key to species was 
possible as a result. The texture of the forewings of trifoveolata is coriaceous 
and opaque in the two females at hand, not subhyaline as in the original 
description. 
SPECIES OF ORECHONA 
superba Melichar, 1926a:346. Brazil. 
trifoveolata Melichar, 1926a:346. Ecuador. 
