Cremnomymar nahuelbutae Triapitsyn, sp. n.

(Figs 15–22)

Type material. Holotype female [MNNC], on slide labeled as in Fig. 15: CHILE. Araucanía: Parque Nacional Nahuelbuta, 37°48’58’’S 73°00’36’’W, 1323 m, 9–10.ii.2005, UCR Expedition (J.M. Heraty et al.), yellow pan trap in mature Nothofagus forest. Paratype: CHILE. Araucanía: Parque Nacional Nahuelbuta, Centro de Informaciones, 37°49’S 73°00’W, 8.xii.1994, S.L. Heydon, E. Arias [1 ♀ on slide, UCDC].

Diagnosis. Females of this species are distinguished from those of all mainland South American species of Cremnomymar by the smooth scutellum (with reticulate mesh-like sculpture in other species).

Description. FEMALE (holotype [not photographed prior to slide-mounting]). Head and mesosoma dark brown, petiole light brown, gaster brown; scape and pedicel light brown, F1–F5 brown, F6 and clava dark brown; legs light brown except procoxa dark brown. Head (Fig. 17) a little wider than high; face with fine, inconspicuous mesh-like sculpture above toruli. Antenna (Fig. 16) with scape, excluding short radicle (fused with the rest of scape), 4.0× as long as wide; pedicel longer than any funicle segment (except F2) and 2.1× as long as wide; F1 the shortest and F2 the longest funicle segments, F6 the widest funicle segment, length to width ratios of funicle segments as follows: F1: 3.1, F2: 5.5; F3: 4.0; F4: 2.4; F5: 2.2; F6: 2.1; F6 with 1 mps; clava 2.9× as long as wide, as long as the 3 preceding segments, with all mps but one in apical half. Mesosoma (Fig. 19) about 1.6× as long as wide; pronotum without distinct sculpture; mesoscutum with reticulate mesh-like sculpture; prosternum as in Fig. 18; mesoscutum much wider than long, with notauli distinct and complete; scutellum about as long as mesoscutum; propodeum mostly smooth, with median carina complete. Fore wing (Fig. 21) 3.6× as long as wide; venation with apical process about as long as marginal + stigmal vein; disc with 2 transverse bands beyond venation, the proximal band narrow and the distal one wide, densely setose beyond venation, discal setae modified only on the dark bands; proximal (short) fringe setae on anterior margin thickened, subapical (long) slightly thickened while apical fringe setae normal; the longest marginal seta about equal to greatest width of wing. Hind wing (Fig. 22) about 25× as long as wide, with disc almost hyaline (slightly infumate subapically) and sparsely setose beyond venation; the longest marginal seta 7.1× greatest width of wing. Metacoxa smooth. Petiole (Fig. 20) cylindrical, 3.9× as long as wide, with inconspicuous wrinkles dorsally. Ovipositor about 0.8 length of gaster (Fig. 20), barely exserted beyond gastral apex, and about 1.1× length of metatibia.

Measurements of the holotype (µm). Mesosoma: 303; petiole: 124; gaster: 357; ovipositor: 300. Scape (excluding radicle): 97; pedicel: 63; F1: 33; F2: 67; F3: 48; F4: 37; F5: 37; F6: 52; clava: 133. Fore wing: 867:239; longest marginal seta: 242. Hind wing: 606:24; longest marginal seta: 170.

Variation (paratype). Scape, excluding radicle, 3.7× as long as wide, clava 3.1× as long as wide; fore wing 4.1× as long as wide, the longest marginal seta 1.3× greatest width of wing; hind wing about 28× as long as wide, the longest marginal seta 8.3× greatest width of wing.

MALE. Unknown.

Distribution. Chile.

Etymology. This species is named after Nahuelbuta National Park (Parque Nacional Nahuelbuta) where the two type specimens were collected.