Leptonema mandibulatum Flint, McAlpine & Ross 1987

Leptonema mandibulatum

MALE.—Ochraceous brown; forewings uniformly ochraceous brown, probably with greenish overtones in life, with 2 dark brown spots, one at base of costal margin, other on subcosta slightly distad. Forewing length 15–16 mm.

Malar space broad, almost height of eye, covered with fine hairs. Parafacial and postocular areas, almost as broad ventrally as malar, much narrowed dorsad, with fine hair; postocular area with a row of 2–4 slightly enlarged setae. Maxillary palpus with fifth segment distinctly longer than basal 4 combined. Processes of fifth sternum, narrow, elongate, distinctly oblique.

Genitalia: Tenth tergum with wart a low; lateral plate produced into a point apically with a distinct dorsomesal point (wart b ?). Clasper with basal segment about 6 times as long as apical, with a well-developed spiculate area apicomesally, without basomesal process. Phallus with base broad, angled to stem that is slender; apex produced into a pair of dorsal, caliper-like lobes basad of which are a pair of short spines that may be more or less everted.

FEMALE.—Slightly larger, to 18 mm. Midtibia and tarsus very broad and flat; second tarsal segment as wide as long.

TYPES.—Holotype (male): PERU, Dpto. Huanuco, Tingo Maria, 19–25 Apr 1969, P. and P. Spangler.

Paratypes: Same data, 2; same, but 19 Nov 1949–25 Feb 1950, H.A. Allard, 12; same, but Monson Valley, 18 Sep–18 Dec 1954, Schlinger and Ross, 1, 40; Yurac, 67 mi E Tingo Maria, 16 Nov 1954, Schlinger and Ross, 1; Aguaytia/Huallaga, 400 m, 11–22 Feb 1961, J.E. Foerster, 1, 99. Dpto. Cuzco, Santa Isabel, Cosñipata Valley, 12 Dec 1951, F. Woytkowski, 1; same, but Hacienda Maria, Cosñipata Valley, 19–24 Feb 1952, 2; same, but Paucartambo, Cosñipata Valley, 26 Nov 1951, 1; Pilcopata, 600 m, 11–14 Dec 1979, J.B. Heppner, 2, 7. [Dpto. Madre de Dios], Avispas, [E Quincemil], 10–30 Oct 1962, L.E. Peña G., 2, 2. Dpto. Puno, Río Inambari, Loromayu, 5–6 Sep 1962, L.E. Peña G., 3, 29.

ECUADOR, Pcia. Pastaza, Puyo, 11–17 May 1977, Spangler and Givens, 3, 21; same, but 1–11 Feb 1976, P.J. Spangler, 2; same, but 29 May 1975, Cohen and Langley, 1; same, but 1.5 km S Puyo, 8–21 May 1977, Spangler and Givens, 1, 9; same, but 5 km E Puyo, 17 May 1977; 3; same, but 5 km S Puyo, 8 May 1977, 1; same, but 6 km W Puyo, 3 Feb 1976, 1. Pcia. Napo, Lago Agrio, 16–19 Sep 1975, A. Langley, 1, 21; same, but 5 km N Lago Agrio, 26 Sep 1975, 12; same, but 4 km NW Lago Agrio, 23 Aug 1975, Langley and Cohen, 1; same, but 4 km N Lago Agrio, 26 Aug 1975, 1, 8; same, but 18 km NW Lago Agrio, 30 Aug 1975, 8; same, but Río Aguarico, 18 km E Lago Agrio, 28 Aug 1975, Langley et al., 1, 1; same, but 3 km NE Lago Agrio, 17 May 1975, Spangler et al., 1. BOLIVIA, Dpto. La Paz, Quebradas del Río Zongo, 1400 m, 24–30 Oct 1984, L.E. Peña G., 3, 12; Río Coroico, 1200 m, 23–26 Nov 1984, L.E. Peña G., 9, 38.

Holotype in USNM; paratypes in CAS, CNC, INHS, and USNM.

DISTRIBUTION.—The species are only known from South America, especially the Amazon Basin and the rugged areas of the Guyanan Shield, but one is known from the western Andes.