Since the publication of my revision of the Eucosminae (U. S. Nat. Mils. Bull. 123, 1923) In the female the hind wing is dark throughout as in typical jormosana.
Essentially as in Diatraea, differing only in the stalking of vein 10 in fore wing. Front flat, smooth. Labial palpi porrect and. downcurved, extending over twice the length of the head. No ocelli. Antennae filiform, somewhat thicker in the male than the female. Fore wing with vein 3 from long before end of cell; 4 and 5 shortly stalked; 6 below apex of cell; 7 at apex; 8-10 stalked from before apex of cell. Hind wing with vein 3 before end of cell; 4 and 5 rather long-stalked; the cross-vein inwardly strongly oblique; 6 from apex of cell, running close to tlie stalk of 7 and 8, which separate only near apex of wing. The genitalia offer no generic characters to distinguish from Diatraea. Male with vinculum elongately triangular. Harpe undivided; elongately triangular; costa with a large, smooth basal projection, excavate beyond, only moderately chitinized. Female with ductus bursae short, weakly chitinized in type, more strongly so in other species. Bursa large, elongate; without signum. Ovipositors and supporting rods normal.
Eighteen genera, 46 species, and 2 varieties are here treated. Of these, 8 genera and 8 species are described as new. The genus Zophodia Hiibner is included because, although not a cactus insect, its structural characters link it closely with the cactus-feeding group and also because a number of cactus phycitids either have been described in that genus or later referred to it. In addition to Zophodia itself there are a few species now listed in Eumysia Dyar and Laetilia Eagonot that share most of the structural characters of the cactusfeeding group. To the best of my knowledge, however, they are not cactus insects and belong to a different though closely allied group.
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