Gonatocerus (Cosmocomoidea) grandis ( 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 : 157-160

Gonatocerus (Cosmocomoidea) grandis ( Ogloblin, 1936)

( Figs 324–330 )

Lymaenon grandis Ogloblin 1936: 38 –41 + plates (láminas) II and III (illustrations). Type locality: Loreto, Misiones, Argentina.

Gonatocerus (Gonatocerus) grandis (Ogloblin) : De Santis 1967: 104 (catalog).

Gonatocerus grandis (Ogloblin) : Yoshimoto 1990: 40 (list); Luft Albarracin et al. 2009: 9 (list; distribution in Argentina).

Lymaenon grandis Ogloblin : Loiácono et al. 2005: 17 (information on potential 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: “ Gonatocerus grandis A. O ♀ Loreto, Misiones 2.iii.1932 A. A. O. ”. The lectotype, although rather poorly cleared, is in relatively good condition except it lacks almost the entire flagellum of the left antenna except for F1, is well spread out and mounted dorsoventrally . Paralectotypes [all MLPA]: 1 ♂ on slide labeled: “ Lymaenon grandis [A. O] ♂ Loreto, Misiones. XI.1933 A. O. ” ; 1 ♂ on slide labeled: “ Lymaenon grandis [A. O.] ♂ Loreto, Misiones 15.VI.1934.” ; 1 ♂ on slide labeled: “ Gonatocerus grandis A. O. ♂ Loreto, Misiones 27.viii.1934 Selva. ”. These four specimens definitely belonged to the syntype series of Lymaenon grandis because they match the collecting dates given in the original description, even though it is evident that the females were listed under the males and vice versa. Ogloblin also apparently miscalculated the number of the specimens in the syntype series, which appears to consist of 1 female and 5 males (of which 2 males have matching published collecting dates), and not of 3 females and 2 males as mistakenly given in the original description. The label data of these two additional males [both MLPA] are as follows : 1 ♂ on slide labeled: 1. “ Gonatocerus grandis A. O. ♂ Loreto. Mis. 2.vi.1932 A. A. O . Typus! Fig. Ant. [ip, iR]”; 2. “3856”. This male is designated as a paralectotype as there is very little doubt that it was part of the syntype series because the drawing of the male antenna given by Ogloblin (1936, Plate III, fig. 24) was made from this specimen according to the inscription in pencil in Russian on the label. Also 1 ♂ (a very probable paralectotype) on slide labeled: “ Gonatocerus grandis A. O ♂ 25.iv.1932. A. O. Loreto, Misiones.”.

Material examined. ARGENTINA. MISIONES, San Ignacio, Chacra Yabebirí ( Yabebiry ), 17.iii.1952, A.A. Ogloblin [1 ♀, MLPA] . BRAZIL. SANTA CATARINA, Nova Teutonia , 27°11’S 52°23’W, 11.vii.1937, F. Plaumann [1 ♀, BMNH] .

Redescription. FEMALE (lectotype and non-type specimens). Body length 1890–2478 µm. Body and appendages mostly light brown except ocelli, eyes, trabeculae, 4 bands on gastral terga, and metatibia brown; flagellum dark brown.

Antenna ( Figs 324 , 326 ) with radicle 4.3–4.6x as long as wide, about 0.3x total length of scape, rest of scape 3.7–3.8x as long as wide, scape longitudinally striate; pedicel much shorter than F1; F1 the longest funicle segment, at least a little longer than F2, and with 1 mps; F2 slightly longer than following funicle segments but F2–F4 more or less subequal in length and a little longer than F5–F7 (F6 about as long as F7 and a little shorter than F5), F8 the shortest funicle segment and about as long as wide or just slightly wider than long, F2–F8 each with 2 mps; clava large, with 8 mps, 3.9–4.2x as long as wide, about as long as combined length of F4–F8.

Mesosoma. Pronotum very short medially, 2-lobed (mediolongitudinally divided), not entire as drawn (for the male) by Ogloblin (1936). Propodeum ( Fig. 327 ) with well-developed submedian carinae and several transverse rugosities in posterior half between submedian and lateral carinae; submedian carinae meeting anteriorly and extending to anterior margin of propodeum. Forewing ( Figs 325 , 328 ) 3.2–3.3x as long as wide; longest marginal seta 0.14–0.17x maximum wing width; disc at least slightly infumate, a little more so behind stigmal vein, bare behind venation except for a few setae behind stigmal vein and apex of marginal vein. Hind wing ( Figs 325 , 328 ) 15–17x as long as wide; disc mostly bare except for rows of setae along margins and a few scattered setae basally and apically, slightly infumate; longest marginal seta 1.2–1.4x maximum wing width.

Metasoma about as long as mesosoma. Petiole 1.3–1.4x as long as wide, notably narrower basally than distally. Ovipositor about 0.75–0.8x length of gaster, slightly exserted beyond gastral apex by about 0.08x own length; ovipositor length: mesotibia length ratio 1.1–1.2:1.

Measurements (µm) of the lectotype. Total body length: 2478; head 344; mesosoma 1015; petiole 123; gaster 1033; ovipositor 806. Antenna: radicle 197; rest of scape 430; pedicel 88; F1 136; F2 115; F3 112; F4 109; F5 103; F6 94; F7 91; F8 64; clava 497. Forewing 2210:689; longest marginal seta 106. Hind wing 1660:112; longest marginal seta 137.

MALE (paralectotypes and the probable paralectotype). Body length 1770–2370 µm. Similar to female except for normal sexually dimorphic features and the following. Body generally darker, often with most of median areas of mesoscutum, scutellum and dorsellum ( Fig. 329 ) brown, as described by Ogloblin (1936). Antenna with scape 2.7–2.8x as long as wide; all flagellomeres longer than scape. Forewing 2.8–3.2x as long as wide. Genitalia as in Fig. 330 .

Diagnosis. Gonatocerus (Cosmocomoidea) grandis is a member of the morrilli subgroup of the ater species group. It is a large species (body length about 1.9–2.5 mm) and females are characterized by their peculiar antenna ( Figs 324 , 326 ) with F1 the longest funicle segment and bearing 1 mps, F2–F8 each with 2 mps, and the large clava about as long as the combined length of F4–F8.

Distribution. NEOTROPICAL: Argentina, and Brazil *.

Hosts. Unknown.

Figures

FIGURES 324, 325. Gonatocerus (Cosmocomoidea) grandis ♀ (lectotype): 324, antenna; 325, wings.

FIGURES 326 – 328. Gonatocerus (Cosmocomoidea) grandis ♀ (Nova Teutonia, Santa Catarina, Brazil): 326, antenna; 327, dorsellum and propodeum; 328, wings.

FIGURES 329, 330. Gonatocerus (Cosmocomoidea) grandis ♂ (paralectotype): 329, dorsellum and propodeum; 330, genitalia.