Gonatocerus (Gonatocerus) stenopterus ( Ogloblin, 1936 )

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 : 37-39

Gonatocerus (Gonatocerus) stenopterus ( Ogloblin, 1936)

( Figs 54–58 )

Lymaenon stenopterus Ogloblin 1936: 33 –36 + plates (láminas) I and II (illustrations). Type locality: Loreto, Misiones, Argentina.

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

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

Lymaenon stenopterus Ogloblin : Loiácono et al. 2005: 17 (information on non-type specimens).

Type material examined. Lectotype female [ MLPA], here designated to avoid confusion about the status of the type specimens of this species, on slide labeled: 1. “ Gonatocerus stenopterus A. O. ♀ Loreto, Misiones 5.x.1933. Fig. [ip, iR] A. A. O! Typus.”; 2. [iR] “[Coloration when alive dark red] (ruber). [Lipochromous red pigment]”. The lectotype, although uncleared, is in good condition, complete, perfectly spread out and mounted dorsoventrally . Paralectotype ♂ [ MLPA] on slide labeled: 1. “ Gonatocerus stenopterus A. O. ♂ Loreto, Misiones 20.xi.1933. A. A. O. Typ. fig. [ip, iR]”; 2. “3866”.

The collection date of the male paralectotype (20.xi.1933) does not match the published date (2.xi.1933), although without any doubt Ogloblin referred to this specimen. The second paralectotype female is missing from MLPA; according to the original description it had the same label data (collected 5.x.1933) as the lectotype. The two specimens of G. (Gonatocerus) stenopterus in MLPA (both from Loreto, Misiones, Argentina; female collected 15.v.1934 and male collected 7.iii.1935) ( Loiácono et al. 2005) have no type status although it is possible that the female was part of the type series of this species provided Ogloblin (1936) incorrectly indicated its collection date.

Material examined. ARGENTINA. BUENOS AIRES, Vieytes , 35°18’26.56’’S 57°34’02.99’’W, 16 m, 29.ii.2008, D . A. Aquino [1 ♀, MLPA]. CÓRDOBA, near Tanti , 31°20’47.1’’S 64°32’03.4’’W, 727 m, 17.xii.2007 – 10.i.2008, G.A. Logarzo [1 ♀, UCRC]. ENTRE RÍOS, Parque Nacional El Palmar, 31°53’35.8’’S 58°14’19.3’’W, 9 m, 14-15.ii.2009, S .V. Triapitsyn, D.A. Aquino, A.V. Ossipov [2 ♂, UCRC].

Redescription. FEMALE (lectotype). Body and appendages mostly brown; antenna (except yellowish or light brown radicle) brown to dark brown. [Live specimens were stated to be darkish red ( Ogloblin 1936), but the body of the non-type specimen from Vieytes is brown to dark brown; the body length of this dry specimen is 860 µm].

Antenna ( Fig. 54 ) with radicle 5.4x as long as wide, about 0.33x total length of scape, rest of scape about 5.0x as long as wide, longitudinally striate; pedicel longer than F1; F1 and F2 subequal, shorter than following funicle segments; F3–F8 more or less subequal, mps on F3 (0 or 1), F4 (1), F5 (2), F6 (2), F7 (2), F8 (2); clava with 8 mps, 3.4x as long as wide, a little shorter than combined length of F5–F8.

Mesosoma ( Fig. 55 ). Pronotum 2-lobed (mediolongitudinally divided), not entire as drawn by Ogloblin (1936). Dorsellum rhomboidal. Forewing ( Fig. 56 ) 5.2–5.3x as long as wide; longest marginal seta about 0.5x maximum wing width. Forewing disc infumate, more so (as darker band) behind marginal vein and base of stigmal vein, bare behind submarginal vein, setose behind marginal vein, and with a small, elongate bare area just beyond stigmal vein. Hind wing ( Fig. 56 ) 31x as long as wide; disc mostly bare except for rows of setae along margins and several scattered setae, slightly infumate; longest marginal seta 3.8x maximum wing width.

Metasoma longer than mesosoma. Petiole trapezoidal, a little wider than long. Ovipositor almost entire length of gaster, exserted beyond its apex by about 0.1x own length; ovipositor length: mesotibia length ratio 1.6:1.

Measurements (µm) of the lectotype. Body: total body length: 1033; head 170; mesosoma 364; petiole 37; gaster 462; ovipositor 485. Antenna: radicle 85; rest of scape 139; pedicel 58; F1 32; F2 31; F3 44; F4 46; F5 52; F6 49; F7 52; F8 47; clava 188. Forewing 873:166; longest marginal seta 82. Hind wing 750:24; longest marginal seta 91.

MALE (paralectotype). Body length 929 µm [760-780 µm in two dry-mounted non-type specimens from Parque Nacional El Palmar]. Similar to female except for normal sexually dimorphic features and the following. Antenna ( Fig. 57 ) with scape (without radicle) 2.9x as long as wide. Forewing ( Fig. 58 ) 4.9x as long as wide.

Diagnosis. Gonatocerus (Gonatocerus) stenopterus is characterized by the female antenna ( Fig. 54 ) with mps on F4–F8 (and also sometimes on F3) and a narrow forewing (4.9–5.7x as long as wide) with a brown band behind the marginal vein and a small, elongate bare area on the disc just beyond the stigmal vein ( Figs 56 , 58 ).

Distribution. NEOTROPICAL: Argentina.

Hosts. Unknown.

Figures

FIGURES 54 – 56. Gonatocerus (Gonatocerus) stenopterus ♀ (lectotype): 54, antenna; 55, body; 56, wings.

FIGURES 57, 58. Gonatocerus (Gonatocerus) stenopterus ♂ (paralectotype): 57, antenna; 58, wings.