Gonatocerus (Gonatocerus) perforator ( Ogloblin, 1953 )

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, Zootaxa 2456, pp. 1-243 : 34-35

Gonatocerus (Gonatocerus) perforator ( Ogloblin, 1953)

( Figs 47–50 )

Lymaenon perforator Ogloblin 1953: 4 –5 + plates (láminas) I and II (illustrations). Type locality: riverside of Arroyo Yabebirí [ Yabebiry River ], Departamento San Ignacio , Misiones, Argentina .

Gonatocerus (Gonatocerus) perforator (Ogloblin) : De Santis 1967: 105 (catalog).

Gonatocerus perforator (Ogloblin) : Yoshimoto 1990: 41 (list); Luft Albarracin et al. 2009: 10 (list; distribution in Argentina).

Lymaenon perforator Ogloblin : Loiácono et al. 2005: 17 (type information, incorrectly listed as lost).

Type material examined. Holotype female [ MLPA] on slide labeled: 1. “ Gonatocerus perforator A. Ogl. REA 1953 [ip, referring to the journal and year of publication] ♀ Yabebirí , Misiones ix.1949 V. K. B. de Ogloblin . Holotypus.”; 2. ‘3873”. The holotype is complete, with the head collapsed, perfectly spread out and mounted dorsoventrally; however, it is difficult to see because of the poor quality of the mounting medium.

Material examined. ARGENTINA. MISIONES, Loreto : 16–30.i.2001, P. Fidalgo [1 ♀, UCRC] ; Ruinas Jesuíticas , 27°20’S, 55°31’W, 26.i–20.ii.2001, S.O. Martínez, P. Fidalgo [1 ♀, UCRC] ; 15.ii.2001, P. Fidalgo [1 ♀, IMLA].

Redescription. FEMALE (holotype and non-type specimens). Body length 860–1230 µm. Head and mesosoma dark brown; gaster light brown to brown, with dark brown bands or spots on some terga; scape and pedicel light brown to brown, flagellum brown to dark brown; ovipositor sheaths brown; legs light brown to brown.

Head in dorsal view much wider than long. Antenna ( Fig. 47 ) with radicle 2.3x as long as wide, about 0.2x total length of scape, rest of scape about 4.0x as long as wide; pedicel longer than F1; F1–F6 more or less subequal (F1 sometimes slightly shorter, and F3 sometimes, F5, and F6 slightly longer than F1, F2, or F4) and without mps, narrower than F7 or F8; F7 and F8 a little longer than other funicle segments (F8 widening and incised apically), each with 2 mps; clava with 8 mps, 3.4x as long as wide, shorter than combined length of F5–F8.

Mesosoma ( Fig. 49 ). Pronotum with lateral lobes widely separated medially (thus appearing 3-lobed). Dorsellum rhomboidal ( Fig. 48 ). Forewing ( Fig. 50 ) 3.3–3.8x as long as wide; longest marginal seta 0.25– 0.3x maximum wing width. Forewing disc slightly infumate throughout, bare behind submarginal vein and almost bare between marginal vein and cubital row of setae and also just beyond stigmal vein. Hind wing 18– 24x as long as wide; disc bare except for rows of setae along margins, slightly infumate, more so apically; longest marginal seta 2.1–2.8x maximum wing width.

Gaster longer than mesosoma. Petiole very short (strap-like). Gastral terga and sterna with longitudinal striations. Ovipositor ( Fig. 49 ) almost entire length of gaster, markedly exserted beyond its apex by a little more than 0.5x own length; ovipositor length: mesotibia length ratio 3.9–4.1:1.

Measurements (µm) of the holotype. Body (underestimated because head length cannot be measured correctly) 984; mesosoma 338; gaster 547; ovipositor 1267. Antenna: radicle 45; rest of scape 121; pedicel 63; F1 36; F2 47; F3 46; F4 47; F5 52; F6 52; F7 63; F8 63; clava 191. Forewing 1052:278. Hind wing length 824.

MALE. Unknown.

Diagnosis. Gonatocerus (Gonatocerus) perforator is characterized by the lateral lobes of its pronotum being widely separated medially (thus appearing 3-lobed), as in G. ( Lymaenon ) species but unlike any other known species of G. ( Gonatocerus ), and also by its very long ovipositor, exserted beyond the apex of gaster by a little more than 0.5x own length ( Fig. 49 ).

Assignment of G. perforator to G. ( Gonatocerus ) is tentative because of its unusual pronotal structure.

Distribution. NEOTROPICAL: Argentina.

Hosts. Unknown.

Figures

FIGURES 47 – 50. Gonatocerus (Gonatocerus) perforator ♀ (Loreto, Misiones, Argentina): 47, antenna; 48, dorsellum and propodeum; 49, body; 50, forewing.