Gonatocerus (Cosmocomoidea) triangulifer (Ogloblin, 1959)

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 : 221-222

Gonatocerus (Cosmocomoidea) triangulifer (Ogloblin, 1959)

( Figs 468–471 )

Lymaenon triangulifer Ogloblin 1959b: 55 (illustrations), 56–58. Type locality: San Mateo, Esmeraldas, Ecuador. Gonatocerus (Gonatocerus) triangulifer (Ogloblin) : De Santis 1979: 367 (catalog).

Gonatocerus triangulafer [sic] (Ogloblin): Yoshimoto 1990: 40 (listed in ater species group).

Lymaenon triangulifer Ogloblin : Loiácono et al. 2005: 17 (type information; incorrectly listed as presumably missing).

Type material examined. Parts of holotype female [ MLPA] on slide labeled [ip]: “ Lymaenon triangulifer ♀ Det. A. Ogloblin , [illegible numbers], 26–VI–1956 J Först”. The mounting medium on the original slide ( Fig. 4 ) was so dark that parts of the poorly preserved, fragmented holotype were hardly visible, so in the course of this study they were remounted into Canada balsam under five coverslips, as follows: 1) head; 2) two forewings, one incomplete and both with many setae broken off; 3) scape, pedicel and F1–F3 of one antenna, and pedicel and F1–F5 of the other antenna; 4) body; 5) leg fragments.

Redescription. FEMALE (holotype). Body length 1080 µm ( Ogloblin 1959b). Body mostly dark brown except base of gaster lighter; scape, pedicel, and remaining funicle segments brown; legs light to dark brown.

Antenna ( Fig. 468 ) with radicle about 0.2x total length of scape, rest of scape 2.6x as long as wide, longitudinally striate; F1 much shorter than pedicel and following funicle segments and without mps; F2 a little shorter than following funicle segments and with 1 mps; F3–F8 more or less subequal (according to original description); F4 slightly shorter than F3 or F5 and with 1 mps, F3 and F5–F8 with 2 mps.

Mesosoma ( Fig. 470 ). Mesoscutum and scutellum almost smooth; propodeum ( Fig. 469 ) with well-developed submedian carinae extending almost to anterior margin but not connecting at dorsellum, and smooth between submedian and lateral carinae. Forewing ( Fig. 471 ) 3.2x as long as wide; forewing disc with an apical brown spot narrowing towards base of wing, bare behind venation.

Gaster a little longer than mesosoma ( Fig. 470 ); ovipositor short, about 0.5x length of gaster, not exserted beyond gastral apex.

Measurements (µm) of the holotype. Mesosoma 400; gaster 449; ovipositor 230. Antenna: radicle 33; rest of scape 133; pedicel 58; F1 20; F2 36; F3 46; F4 42; F5 46. Forewing 898:283.

MALE. Unknown.

Diagnosis. Gonatocerus (Cosmocomoidea) triangulifer is a member of the ater subgroup of the ater species group. It is characterized by the forewing ( Fig. 471 ) having an apical brown spot that narrows toward the base of the wing, and a disc that is bare behind the venation.

Distribution. NEOTROPICAL: Ecuador.

Hosts. Unknown.

Figures

FIGURE 4. The original type slides of the six out of seven species of Gonatocerus described by Ogloblin (1959 b) from Ecuador, before the specimens on them were remounted into Canada balsam from the dark, dried water-soluble mounting medium.

FIGURES 468 – 471. Gonatocerus (Cosmocomoidea) triangulifer ♀ (holotype): 468, scape, pedicel and F 1 – F 3 of one antenna, and pedicel and F 1 – F 5 of the other antenna (remaining parts are missing); 469, dorsellum and propodeum; 470, mesosoma and metasoma; 471, forewing.