Ischnoptera panamae Hebard 1920

Ischnoptera panamae new species (Plate IV, figures 14 and 15.)
This species in general appearance resembles /, tolteca Saussure.^"^ The description of /. 7iana Saussure and Zehntner would indicate nearest relationship to that species, but so insufficient is it that nothing definite as to the real degree of affinity can be ascertained. From that description, it appears that the present insect differs from nana in having the latero-caudal sulci of the pronotal disk distinct, not obsolete, while the styles of the male subgenital plate can hardly be termed normal. '^"'^ In every case where males have been available for comparison, the genitalia for each species of the second section of the genus Ischnoptera have been found not only highly specialized but very distinctive.
Type. — cf ; Empire, Canal Zone, Panama. November 14, 191 3. (]I, Hebard.) [Hebard Collection, Type no. 488.]
Size small, form moderately slender, much as in /. mirella here described. Interocular space moderately broad, slightly narrower than that between the ocelli, hardly three-fifths that between the antennal sockets. Ocelli large and distinct, flattened surface of ocellar areas forming a blunter angle with the interocellar area than in mirella. Maxillary palpi short, fifth (distal) and third joints subequal in length, distinctly longer than fourth. Latero-caudal sulci of pronotal disk moderately decided.'"'' Tegmina and wings extending a short distance beyond apices of
'"^ The unstudied collections at hand contain a number of species which, though in general appearance closely resembling tolteca, show remarkable male genitalic features of specific diagnostic value.
'"* From the measurements given for nana, the present species differs in the shorter pronotum and the more elongate tegmina. We regret that we do not, however, feel the confidence in the accuracy of the measurements given in this portion of the Biologia Centrali-Amcricana, probably taken by Zehntner, necessary to make ihem of any great value for close comparisons.
'"^ In some individuals ot the scries more strongly indicated than in others.
the cerci. Wings with a moderately well developed intercalated triangle. Dorsal surface of abdomen specialized as is characteristic of the genus; eighth segment with caudal margin rather strongly concave.