Leptonema guayanense Flint, McAlpine & Ross 1987

Leptonema guayanense

MALE.—Color golden brown; forewing with a dark spot subbasally on subcosta and another tuft of dark hair basally on axillary sclerite, posteroapical margin with an infuscate band. Length of forewing 15–21 mm.

Malar space very broad, more than as high as eye, very hairy. Parafacial area lacking; postocular area as broad below as malar, lacking above, densely hairy with 2–3 enlarged setae near eye. Maxillary palpus with fifth segment longer than basal 4 segments combined. Processes of fifth sternum long, narrow, very obliquely placed, with anterior margin reflexed over opening.

Genitalia: Tenth tergum with wart a small, rounded, wart b erect, basomesal in position; lateral lobe narrow, pointed, caliper-like in dorsal aspect. Clasper with basal segment about 2 times as long as apical, with a cluster of mesal spines about third of length from apex; without basal lobe. Phallus with base broad, rounding into stem; apex enlarged ventrad, with rounded lateral lobes, with a small apicodorsal opening, ventromesal margin of which is produced into a tongue-like lobe, ventral process of ejaculatory duct very long, apex pointed, either folded internally, or exserted from opening.

FEMALE.—Smaller in size, wings darker brown; forewing 14–15 mm in length.

TYPES.—Holotype (male): VENEZUELA, Edo. Bolívar, Kanarakuni, 450 m, 3 Feb 1967, F. Fernandez Y. and A. D’Ascoli.

Paratypes: Same, but 2–8 Feb 1967, 9, 8; Roraima, 3000 ft., 15 Sep 1974, B.V. Ridout, 2; Auyántepuí, Río Chirun, 24 Aug 1974, B.V. Ridout, 1; Camarata, 3000 ft., 6 Aug 1974, B.V. Ridout, 1.

Holotype in IZAM; paratypes in BMNH, IZAM, and USNM.