612 N. C. AGR. EXP. STA. BUL. 239 
one female, same data except longitude which is 70°47’ W., date which is Oc- 
tober 17, 1966, and elevation which is 510 m.; one male and one female, 
Quebrada de la Plata, Rinconada, Maipu, 33°31’ S. — 70°47' W., 775 m., 
August 24, 1966 (M. E. Irwin); one female with same data except date, 
August 22, 1966, and two females same data except October 2, 1966 (all 
Riverside). 
The species is named in honor of Dr. Carlo Vidano, whose cooperation has 
been most generous and most helpful. 
Helocharina vidanoi, n. sp. is readily separated from H. gayi (Spinola) by the 
plexus of veins in the forewing, which is absent in gayi, and by the asymme- 
trical paraphyses. 
84. Genus ORAGUA MELICHAR 
Ficures 500-525 
Oragua Melichar, 1926a:344. Type-species: Tettigonia nebulosa Signoret by subsequent 
designation of China, 1938d:184. 
Length 5.2-10.7 mm. 
Head slightly produced, with median length of crown varying from one- 
third to slightly less than six-tenths interocular width and from slightly more 
than one-fifth to slightly less than four-tenths transocular width, anterior 
margin obtusely rounded in dorsal view, not angulate nor carinate at trans- 
ition from crown to face, ocelli located on or slightly before a line between an- 
terior eye angles, each closer to adjacent anterior eye angle than to median 
line of crown, surface convex, without fovea, usually coarsely punctate 
(exception: O. stylata (Signoret), and O. yuracensis, n. sp.), lateral clypeal 
sutures extending onto crown and attaining ocelli; antennal ledges not pro- 
tuberant, not carinate, their anterior margins vertical or oblique and varying 
from rectilinear or slightly concave to convex; face in profile slightly convex, 
clypeus not or scarcely flattened medially, median area conspicuously punc- 
tate (exception: stylata), lower portion of clypellus continuing profile of cly- 
peus or more strongly oblique, face usually without pubescence, transclypeal 
suture complete or not. 
Pronotum with width less than transocular width of head, lateral margins 
parallel or very slightly convergent anteriorly, dorsopleural carinae complete, 
posterior margin concave; surface punctate (exceptions: stylata, and yuracensis) 
and also rugose in some species, without pubescence; scutellum punctate, 
transversely rugose, or without sculpturing (varying interspecifically). Fore- 
wing with membrane including at least inner apical cell, membrane abruptly 
delimited or not from remainder of surface, veins distinct and elevated, with 
four apical cells of which the base of the fourth is almost always located more 
proximally than base of third, without an anteapical plexus of veins, texture of 
portion before membrane coriaceous and often punctate; forewings of female 
at rest position exceeding apex of ovipositor or not. Hindleg with femoral setal 
formula 2:1:1 or 2:1:1:1, first tarsomere with length equal to or greater than 
combined length of two more distal tarsomeres and with two longitudinal 
