Epimetopus angustus, Perkins, 2012

Perkins, Philip D., 2012, 3531, Zootaxa 3531, pp. 1-95 : 20

Epimetopus angustus , new species

Figs. 24 (habitus), 28 (aedeagus), 130 (map)

Type Material. Holotype (male): Ecuador: Napo, Tena , 0° 59' N, 77° 49' W, 27 v 1977, W. E. Steiner ( USNM) . Paratypes (1479): Ecuador: Napo, Limoncocha , 1° 33' S, 75° 35' W, 11 vi 1977, W. E. Steiner (1 USNM) ; Tena , 0° 59' N, 77° 49' W, 26 v 1977, W. E. Steiner (1 USNM) ; Panama: Panama, El Real, 8° 8' N, 77° 43' W, 6 viii 1952, F. S. Blanton (3 USNM) ; Peru: Madre de Dios, Pantiacolla Lodge, Monk Saki Trail, Alto Madre de Dios River , at black light, elev. 400 m, 12° 39' S, 71° 13' W, 25 x 2000, R. Brooks (PERU1B00 098A) (23 SEMC) ; Venezuela: Amazonas, Agua Blanca, Cerro d. l. Neblina , elev. 160 m, 0° 49' N, 66° 18' W, 20–21 v 1984, O. Flint & J. Louton (3 USNM) ; Cerro de la Neblina, Basecamp , At black light in rainforest clearing near Rio Baria , elev. 140 m, 0° 50' N, 66° 10' W, 10–11 ii 1985, P. J. Spangler, P. M. Spangler, R. A. Faitoute, W. E. Steiner (268 USNM) ; Cerro de la Neblina, Basecamp, At black light on bank of Rio Baria , elev. 140 m, 0° 50' N, 66° 10' W, 6 ii 1985, W. E. Steiner (887 USNM) ; same locality, elev. 140 m, 0° 50' N, 66° 10' W, 28 ii 1985, P. J. Spangler, P. M. Spangler, R. A. Faitoute, W. E. Steiner (293 USNM) .

Differential Diagnosis. The habitus of this species ( Fig. 24) is very similar to that of several other members of the Costatus group; reliable determinations will be based on examination of the aedeagus. The aedeagus ( Fig. 28) is somewhat similar in general shape to that of E. burruyacu ( Fig. 72); both have slender, slightly arching parameres. E. angustus differs from E. burruyacu in that the parameres are longer compared with the length of the basal piece; also, the median lobe is narrower and longer.

Description. Size: holotype (length/width, mm): body (length from anterior margin of pronotum to elytral apices) 1.31/0.73; head (width) 0.38; pronotum 0.52/0.53; elytra 0.85/0.73. Habitus and sculpture as illustrated ( Fig. 24). Head black, dorsum red, venter and coxae dark brown, maxillary palpi testaceous. Eye with ca. 3–4 facets between canthus and posterior margin. Protibiae slightly arcuate. Elytral granules linking punctures. Metaventral depression moderately deep, ca. six granules along base.

Etymology. Named in reference to the narrow median lobe and narrow parameres.

Distribution. Currently known from Panama, Venezuela, Ecuador, and Peru ( Fig. 130).