Gonatocerus (Cosmocomoidea) cuscus Triapitsyn, sp. n. (Figs 277–285) Type material. Holotype female [UCDC] on slide: PERU. CUSCO (CUZCO), Picol, 3728 m, 28.ii.2005, L.S. Kimsey, Malaise trap. The holotype lacks the apex of one of the hind wings. Paratypes: PERU. CUSCO (CUZCO): 3728 m, 5.i.2005, L.S. Kimsey [3 ♀ on points, UCDC]; 3728 m, 28.ii.2005, L.S. Kimsey, Malaise trap [11 ♀ on points, CNCI (1), UCDC (7), UCRC (3), and 4 ♂ on points, CNCI (1), UCDC (2), UCRC (1)]; 13°29’S 71°52’W, 3700 m, 27.xii.2004, W. Vargas [4 ♀ on points, UCDC]; 13°29’S 71°52’W, 3700 m, 24.iii.2005, W. Vargas [1 ♀ on slide, UCRC, 6 ♀ on points, UCDC, 3 ♂ on individual slides, UCDC (1), UCRC (2), and 1 ♂ on point, UCDC]. Q’queccayoc, 3700 m, 18.iii.2005, W. Vargas [1 ♀ on slide, UCRC, and 4 ♀ on points, UCDC]. Description. FEMALE (holotype and paratypes). Body length 1160–1385 µm (dry specimens). Body and antennae mostly dark brown except petiole light brown to brown, legs brown to dark brown. Antenna (Fig. 277) long, with radicle about 0.4x total length of scape, rest of scape 3.3–3.7x as long as wide, slightly longitudinally striate; pedicel slightly longer than F1; F1 much shorter than F2, F2 the longest funicle segment and following segments each a little shorter than preceding one; F1–F4 without mps, mps on F5 (2), F6 (2), F7 (2), and F8 (2); clava with 10 mps, 2.5–2.8x as long as wide, shorter than combined length of F6–F8. Mesosoma (Fig. 279). Mesoscutum and scutellum with inconspicuous sculpture (easier to observe in drymounted specimens). Propodeum (Fig. 278) with narrow, subparallel submedian carinae narrowing toward and extending almost to anterior margin, and with inconspicuous sculpture (easier to observe in dry-mounted specimens). Forewing (Fig. 280) 3.2–3.3x as long as wide; longest marginal seta 0.22–0.28x maximum wing width; disc with a conspicuous brownish tinge throughout, but a little more pronounced behind marginal and stigmal veins and along posterior margin of wing just beyond venation, bare behind submarginal vein and densely setose elsewhere including behind marginal and stigmal veins. Hind wing (Fig. 281) 14–16x as long as wide; disc more or less uniformly setose and with a slight, uniform brownish tinge throughout; longest marginal seta 1.8–2.0x maximum wing width. Gaster longer than mesosoma (Fig. 279). Petiole 1.3–1.5x as long as wide. Ovipositor 0.75–0.8x length of gaster, exserted beyond its apex by a little less than 0.1x own length; ovipositor length: mesotibia length ratio about 1.4:1. Measurements (µm) of the holotype. Mesosoma 523; petiole 68; gaster 800; ovipositor 658. Antenna: radicle 103; rest of scape 152; pedicel 67; F1 64; F2 115; F3 104; F4 88; F5 82; F6 79; F7 73; F8 58; clava 182. Forewing 1660:498; longest marginal seta 127. Hind wing 1236:85; longest marginal seta 152. MALE (paratypes). Body length 1190–1255 µm (dry specimens). Similar to female except for normal sexually dimorphic features and the following. Gaster a little lighter than in female, brown to dark brown. Antenna (Fig. 282) long, with scape smooth, 2.9–3.5x as long as wide, flagellomeres at least slightly longer than scape. Propodeum as in Fig. 283. Forewing (Fig. 284) 3.0–3.2x as long as wide. Genitalia as in Fig. 285. Diagnosis. Gonatocerus (Cosmocomoidea) cuscus sp. n. is a member of the morrilli subgroup of the ater species group. It is characterized by the following unique combination: body and appendages almost uniformly dark brown; female antenna (Fig. 277) with 10 mps on the clava; propodeum (Figs 278, 283) with characteristic submedian carinae as described above and inconspicuous sculpture; and forewing disc densely setose behind marginal and stigmal veins (Figs 280, 284). Etymology. The species name (a noun in apposition) is treated as an arbitrary combination of letters. Hosts. Unknown.

Published as part of Triapitsyn, Serguei V., Huber, John T., Logarzo, Guillermo A., Berezovskiy, Vladimir V. & Aquino, Daniel A., 2010, Review of Gonatocerus (Hymenoptera: Mymaridae) in the Neotropical region, with description of eleven new species, pp. 1-243 in Zootaxa 2456 on pages 141-142, DOI: 10.5281/zenodo.894928