Gonatocerus (Cosmocomoidea) mumu Triapitsyn

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 : 185-187

Gonatocerus (Cosmocomoidea) mumu Triapitsyn , sp. n.

( Figs 382–388 )

Type material. Holotype female [MLPA] on slide: ARGENTINA. MISIONES, Loreto, 23.viii.2000, P. Fidalgo, yellow pan traps in Ruinas Jesuíticas. The holotype lacks F8 and clava of one antenna as well as one foreleg and one middle leg. Paratypes: ARGENTINA. MISIONES, Loreto: 2.vi.1934, [A.A. Ogloblin] [1 ♂ on slide, MLPA] [the misidentified paralectotype of G. (Cosmocomoidea) gracilicornis (Ogloblin) ]; Ruinas Jesuíticas (Jesuit Ruins): 21–26.viii.2000, P. Fidalgo [1 ♂ on slide, UCRC, and 6 ♀ on points, CNCI (2), IMLA (2), UCRC (2)]; 23.viii.2000, P. Fidalgo, yellow pan traps [1 ♂ on slide and 5 ♀, 1 ♂, UCRC, and 11 ♀, 6 ♂ on points, CNCI]; 24.viii.2000, P. Fidalgo, yellow pan traps [5 ♀, 2 ♂ on points, CNCI (2 ♀), IMLA (2 ♀, 1 ♂), UCRC (1 ♀, 1 ♂)]; 25.viii.2000, P. Fidalgo, yellow pan traps [2 ♀ on individual slides, UCRC]; 28.viii.2000, P. Fidalgo, yellow pan traps [1 ♀ on slide, 2 ♂ on points, UCRC]; 9.v–7.vi.2001, S.O. Martínez, P. Fidalgo, Malaise trap [1 ♀ on slide, IMLA]; 27°19’57.1’’S 55°31’13.0’’W, 171 m, ix-x.2004, G.A. Logarzo (from sentinel eggs of Tapajosa rubromarginata (Signoret) on citrus plant) [1 ♀, UCRC].

Description. FEMALE (holotype and paratypes). Body length 1160–1520 µm. Head mostly yellow except trabeculae and interocellar area on vertex brown to dark brown; scape yellow to light brown, pedicel light brown to brown, flagellum dark brown; mesonotum orange-yellow; legs mostly yellow or very light brown except metatibia brown; basal gastral terga pale or yellowish, remainder of gastral terga light brown to brown.

Antenna ( Fig. 382 ) with radicle about 0.25x total length of scape, rest of scape 3.2–3.6x as long as wide, slightly longitudinally striate; pedicel longer than F1; F1 the shortest funicle segment and without mps, F2–F7 more or less subequal in length (F2 slightly shorter, F3 and F4 slightly longer), F8 shorter than F7; mps on F2 (0 or 1), F3 (1 or 2), F4 (2), F5 (2), F6 (2), F7 (2), and F8 (2); clava with 8 mps, 3.4–4.1x as long as wide, slightly longer than combined length of F6–F8.

Mesosoma ( Fig. 384 ). Mesoscutum and scutellum with inconspicuous sculpture (easier to observe in drymounted specimens). Propodeum ( Fig. 383 ) with well-developed submedian carinae, the carinae slightly widening anteriorly from about middle of propodeum and extending almost to its anterior margin, the area between them smooth and almost smooth between them and lateral carinae. Forewing ( Fig. 385 ) 3.4–3.7x as long as wide; longest marginal seta 0.24–0.25x maximum wing width; disc with a conspicuous brown band behind and just beyond stigmal vein and a narrow, transverse brown spot in the middle, the area between these two brown spots contrastingly hyaline, apex of disc distal to the median brown spot with uniform brownish tinge; disc bare behind submarginal and marginal veins except for a few setae just behind apex of marginal vein, and densely setose elsewhere. Hind wing 18–21x as long as wide; disc mostly bare except for rows of setae along margins and a few scattered setae basally and apically, apex of disc with a conspicuous brownish tinge; longest marginal seta 1.9–2.4x maximum wing width.

Petiole 1.2–1.5x as wide as long, a little narrower basally than apically. Gaster longer than mesosoma. Ovipositor 0.6–0.7x length of gaster, not or just barely exserted beyond its apex; ovipositor length: mesotibia length ratio 0.8–0.9:1.

Measurements (µm) of the holotype. Mesosoma 554; petiole 55; gaster 707; ovipositor 424. Antenna: radicle 61; rest of scape 185; pedicel 70; F1 56; F2 85; F3 94; F4 91; F5 88; F6 82; F7 82; F8 67; clava 273. Forewing 1507:437; longest marginal seta 103. Hind wing 1095:55; longest marginal seta 130.

MALE (paratypes). Body length 1242–1475 µm. Similar to female except for normal sexually dimorphic features and the following. Body a little darker, usually with most of vertex and with parts of mesonotum light brown or brown, propodeum light brown, and gaster mostly brown. Antenna as in Fig. 386 . Forewing ( Fig. 387 ) 3.5–3.8x as long as wide. Genitalia as in Fig. 388 .

Diagnosis. Gonatocerus (Cosmocomoidea) mumu sp. n. is a member of the ater subgroup of the ater species group. It is characterized by the forewing having a conspicuous brown band on the disc behind and just beyond stigmal vein and a narrow, transverse brown spot in the middle, but with the area between them contrastingly hyaline ( Fig. 385 ). It is very similar to G. (Cosmocomoidea) garchamp sp. n., which lacks a second, conspicuous, narrow brown spot in the middle of the forewing disc and does not have a hyaline area on the disc distal to the basal brown band ( Fig. 306 ). Also, the forewing of G. mumu is relatively a little narrower (3.4–3.7x as long as wide in females and 3.5–3.8x as long as wide in males) than that of G. garchamp (3.1– 3.4x as long as wide in females and 3.0–3.4x as long as wide in males). The male of G. mumu is relatively lighter colored than that of G. garchamp .

Etymology. The species name (a noun in apposition) is treated as an arbitrary combination of letters.

Host. Tapajosa rubromarginata (Signoret) (Cicadellidae) .

Figures

FIGURES 382 – 385. Gonatocerus (Cosmocomoidea) mumu ♀ (382 – 384 – holotype; 385 – paratype): 382, antenna; 383, dorsellum and propodeum; 384, mesosoma and metasoma; 385, forewing.

FIGURES 386 – 388. Gonatocerus (Cosmocomoidea) mumu ♂ (paratypes): 386, antenna; 387, forewing; 388, genitalia.

FIGURES 304 – 306. Gonatocerus (Cosmocomoidea) garchamp ♀ (paratype): 304, antenna; 305, dorsellum and propodeum; 306, forewing.