Leptonema mastigion Flint, McAlpine & Ross 1987

Leptonema mastigion

MALE.—Color pale brown, probably green in life; forewing indistinctly fuscous over anastamosis. Length of forewing, 12 mm.

Malar space narrow, about width of eye. Parafacial and postocular areas width of malar; postocular area with a row of 3–4 stout setae. Maxillary palpus with apical segment about length of basal 4 segments combined. Process of fifth sternum large, rounded.

Genitalia: Tenth tergum with 2 elongate warts, probably a and b; lateral lobe long, produced and bluntly pointed apically. Clasper with apical segment long, terete; basal segment about 2 times as long as apical, base unmodified. Phallobase elongate, angled; a developed into a thin, erect process, g an erect apicolateral plate produced into a recurved, slender, whip-like filament; j a short, thin, erect process.

FEMALE.—Size and color in alcohol similar to male.

TYPES.—Holotype (male): ECUADOR, Pcia. Los Rios, Río Palenque Biological station, 56 km N Quevedo, 250 m, 28–29 Jul 1976, J. Cohen.

Paratypes: Same data, 1. Pcia. Pichincha, 14 km E Santo Domingo de los Colorados, 5 Jul 1975, Langley and Cohen, 1; 47 km S Santo Domingo, Río Palenque Biological Station, 750 m, 28 July 1976, J. Cohen, 1; Tinalandia [E edge of Santo Domingo de los Colorados], 16 Feb 1982, G. and M. Wood, 1, 4.

Holotype in USNM; paratypes in CNC and USNM.