Gonatocerus (Gahanopsis) deficiens, comb. n.
Creators: name: Triapitsyn, Serguei V.
name: Huber, John T.
name: Logarzo, Guillermo A.
name: Berezovskiy, Vladimir V.
name: Aquino, Daniel A.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mymaridae
Gonatocerus
Gonatocerus deficiens

description: Gonatocerus (Gahanopsis) deficiens (Ogloblin, 1946), comb. n.
(Figs 162–167)
Lymaenon (Gahanopsis) deficiens Ogloblin 1946: 288 –290. Type locality: St. Augustine, Trinidad Island, Trinidad and Tobago.
Gahanopsis deficiens (Ogloblin): Annecke & Doutt 1961: 13; De Santis 1979: 364 (catalog); Huber 1988: 33 (mentioned); Yoshimoto 1990: 41 (listed in membraciphagus species group of Gonatocerus without formal synonymy of Gahanopsis under Gonatocerus).
Type material examined. Holotype female [USNM] on slide labeled: 1. “ Lymaenon (Gahanopsis) deficiens A. Ogl. Holotypus Allotypus”; 2. “ Mymaridae n.g. n.sp. Gahan [line] St. Augustine, Trinidad Aug. 10, 1943 E. M’C.Callan Coll. Ex. Eggs of Tylopelta monstrosa? Host identified by Beamer as Erechtia sp. Lot No 43– 12051”; 3. [red] “Holo-phllo- Type No. 56877 U.S.N.M.”. The holotype (the middle female among the three females on the right side of the coverslip, marked by a smaller dot in black ink on the coverslip) is in fair condition, apparently complete, with the head mounted dorsoventrally while the rest of the body is positioned partially laterally (Fig. 162). Paratypes: 6 females and 2 males (one of which, the uppermost male with its head attached to the body, is the allotype, which is marked by a larger dot in black ink on the coverslip) on the same slide and under the same coverslip as the holotype.
Material examined. COSTA RICA. GUANACASTE, La Pacífica, xii.1985, A. Forsyth (ex. Aconophora sp.) [1 ♀, 1 ♂, UCRC]. VENEZUELA. ZULIA, El Tucuco, 24.iv.1981, L. Masner [1 ♀, USNM].
Redescription. FEMALE (holotype, paratypes, and non-type specimen from Costa Rica). Body length 770–958 µm. Head and mesosoma brown to dark brown; flagellum brown; gaster light brown to brown; scape, pedicel, and legs light brown.
Antenna (Fig. 163) with radicle about 0.25x total length of scape, remainder of scape about 2.4x as long as wide; pedicel much longer than F1; funicle 7-segmented; F1 the shortest funicle segment and without mps; F2–F7 more or less subequal (F2, F3, and F7 a little shorter), mps on F2 (3), F3 (3), F4 (3), F5 (3), F6 (3), and F7 (4); clava about 3.0x as long as wide, apparently with 8 mps, longer than combined length of F6 and F7.
Mesoscutum weakly sculptured, more so anteriorly; propodeum smooth. Forewing (Fig. 162) 2.9–3.0x as long as wide; longest marginal seta about 0.2x maximum wing width; forewing disc with a slight brownish tinge, bare behind submarginal vein and densely setose elsewhere including behind marginal vein. Hind wing 13–14x as long as wide; longest marginal seta 1.4–1.7x maximum wing width; disc with a slight brownish tinge and setose (more sparsely behind venation). Metafemur 2.7–2.9x as long as wide.
Gaster much longer than mesosoma (Fig. 162); petiole very short, strap-like, inconspicuous, ovipositor very long, projecting strongly forward under mesosoma (extending at least to the middle of mesoscutum, often as far as the middle of head) and slightly exserted beyond apex of gaster; 3.5–3.8x as long as mesotibia.
Measurements (µm) of the holotype. Total body length: 923; head: 172; mesosoma 277; gaster 584; ovipositor 750. Antenna: radicle 25; rest of scape 69; pedicel 45; F1 19; F2 40; F3 42; F4 48; F5 46; F6 48; F7 43; clava 115. Forewing 775:264; longest marginal seta 56. Hind wing 646:47; longest marginal seta 79.
MALE (allotype, the other paratype, and non-type specimen from Costa Rica). Body length 818–1064 µm. Similar to female except for normal sexually dimorphic features and the following. Antenna (Fig. 164) with scape plus radicle 2.3–2.9x as long as wide, flagellum 11-segmented. Mesosoma as in Fig. 165. Forewing (Fig. 167) 2.9–3.2x as long as wide. Genitalia as in Fig. 166.
Diagnosis. Gonatocerus (Gahanopsis) deficiens is characterized by the following unique combination: female antenna (Fig. 163) with funicle 7-segmented; F2–F7 more or less subequal in length and each with mps.
Gonatocerus (Gahanopsis) arkadak Triapitsyn sp. n. is the only other known species of the subgenus with a 7-segmented female funicle, but F3 and F5 are short and lack mps (Fig. 158).
Distribution. NEOTROPICAL: Costa Rica *, Trinidad and Tobago, and Venezuela *. Hosts. Aconophora sp. [new record], and Tylopelta monstrosa (Fairmaire) (Ogloblin 1946) (Membracidae).
description: Published as part of 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, pp. 1-243 in Zootaxa 2456 on pages 88-90, DOI: 10.5281/zenodo.894928