Gonatocerus (Cosmocomoidea) quadrivittatus Dozier, 1932

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 : 207-209

Gonatocerus (Cosmocomoidea) quadrivittatus Dozier, 1932

( Figs 438–444 )

Gonatocerus quadrivittatus Dozier 1932: 81 –82. Type locality: Port-au-Prince, Haiti. Gonatocerus (Gonatocerus) quadrivittatus Dozier : De Santis 1979: 366 (catalog). Gonatocerus quadrivittatus Dozier : Yoshimoto 1990: 41 (list).

Type material examined. Holotype female [USNM] on slide labeled: 1. “ Ooctonus quadrivittatus Dozier ♂ + ♀ reared from Malphigia glabra infested with Ormenis sp. Port-au-Prince, Haiti. July 30–1931 H. L. Dozier”; 2. [red] “ Gonatocerus [ Ooctonus – co] quadrivittatus Dozier 65499 ♀ Holotype ♂ Allotype, 1 paratype ♂ Type No. U.S.N.M.”. The holotype, although not properly cleared, is in fair condition, complete, and mounted dorsoventrally. Paratypes: 2 males mounted on the same slide and under the same coverslip as the holotype; it is impossible to figure out which of these males is the allotype. The other paratypes mentioned in the original description (2 females and 3 males) have not been examined; their whereabouts are unknown although one female and one male were stated as deposited by the author in USNM under No. 43880.

Redescription. FEMALE (holotype). Head and mesosoma mostly dark brown to black, gaster light brown with 4 brown cross bands; radicle light brown, remainder of antennal segments brown to dark brown; legs light brown to brown.

Antenna ( Fig. 438 ) with radicle about 3.5x as long as wide, about 0.33x total length of scape, rest of scape 3.8x as long as wide; pedicel much longer than F1; F1 slightly shorter than F2, F1 and F2 shorter than following funicle segments and without mps; F3–F8 subequal in length (F5 the longest funicle segment) and each apparently with 2 mps although F3 and F4 possibly with just 1 mps on one of the antennae; clava with 8 mps, about 3.1x as long as wide, a little longer than combined length of F6–F8.

Propodeum ( Fig. 440 ) with submedian carinae incomplete, subparallel, not extending to half length of propodeum. Forewing ( Fig. 441 ) 3.0x as long as wide; longest marginal seta about 0.2x maximum wing width; disc almost hyaline, bare behind submarginal vein, with a few setae behind marginal and stigmal veins, leaving a small bare area anterior to the complete cubital row of setae and just beyond stigmal vein, remainder of disc setose. Hind wing ( Fig. 441 ) about 15x as long as wide; disc hyaline, bare except for rows of setae along margins; longest marginal seta about 1.5x maximum wing width.

Gaster longer than mesosoma ( Fig. 439 ). Ovipositor exserted beyond gastral apex by about 0.13x own length; ovipositor length: mesotibia length ratio 1.5:1.

Measurements (µm) of the holotype. Total body length: 1015; mesosoma 382; gaster 494; ovipositor 430. Antenna: radicle 77; rest of scape 140; pedicel 52; F1 27; F2 30; F3 46; F4 46; F5 52; F6 50; F7 46; F8 44; clava 158. Forewing 880:293; longest marginal seta 61. Hind wing 677:45; longest marginal seta 67.

MALE (paratypes). Body length 861–978 µm. Similar to female except for normal sexually dimorphic features and the following. Distal 0.66 or so of gaster mostly brown ( Fig. 443 ). Antenna as in Fig. 442 . Forewing ( Fig. 444 ) 2.7–2.9x as long as wide.

Diagnosis. Gonatocerus (Cosmocomoidea) quadrivittatus is a member of the ater species group, likely of its bucculentus subgroup based on its incomplete submedian carinae on the propodeum and apparent presence of an occipital sulcus. Unfortunately, the genae are not visible due to the poor mounting of the heads of the specimens. It is quite similar to G. (Cosmocomoidea) dolichocerus Ashmead , from which it differs mainly by the short F2 of the female antenna, which is about as long as F1 and without mps ( Fig. 438 ). Distribution. NEOTROPICAL: Haiti.

Hosts. Unknown, although the type series of G. quadrivittatus was reared “from foliage and stem material of the Barbados Cherry, Malphigia glabra ” … “infested with an undescribed aleyrodid and a fulgorid hopper, Ormenis sp.” ( Dozier 1932, p. 82). Thus, Ormenis sp. ( Hemiptera : Flatidae ) could be the likely host of this species.

Figures

FIGURES 438 – 441. Gonatocerus (Cosmocomoidea) quadrivittatus ♀ (holotype): 438, antennae; 439, body; 440, dorsellum, propodeum, and petiole; 441, wings.

FIGURES 442 – 444. Gonatocerus (Cosmocomoidea) quadrivittatus ♂ (paratype): 442, antenna; 443, body (lateral view); 444, forewing.