Ptenidium carinatum sp. n.

(Figs. 3, 13, 16, 23, 29)

Habitus Fig. 3. Length 0.92 mm. Colour black appearing polished and shining, without pubescence except on the front of the head, antennae and legs dusky yellow. Antennomeres 3–11 0.22 mm long. Width across eyes 0.29 mm. Pronotum very finely punctured and with a narrow raised border on lateral margins, 0.40 mm wide, 0.25 mm long. Setae at hind angles Fig. 13. Elytra very finely punctured, 0.51 mm long, 0.49 mm wide. Scutellum with a longitudinal carina Fig. 23. Proventral keel between procoxae with ventrally directed posterior tip Fig.16.

Male: not known.

Female: spermatheca Fig. 29.

Etymology. After the Latin carina meaning keel and referring to the keel on the scutellum.

Diagnosis. The carinate scutellum will quickly distinguish this species from all others.

Type data: Holotype: ♀, PERU: Cusco Dept.: Villa Carmen Field Station, cafeteria ~ 1.7 km west, research transect, 12.89231°S 71.41930°W, 555m, 24–26.V.2011, D.J. Bennett & E. Razuri, yellow pan trap, PER-11-PTY- 0 0 6 (MUSM). Paratype: PERU: Madre de Dios Dept.: CICRA Field Station, Exp. Plot, north transect, 123.55261°S 70.11008°W, flight intercept trap, 295m, 11–13.VII.2010, Chaboo team, PER-10-FIT-005, (SEMC).