Gonatocerus (Lymaenon) kusaka Triapitsyn

Triapitsyn, Serguei V., 2013, Review of Gonatocerus (Hymenoptera: Mymaridae) in the Palaearctic region, with notes on extralimital distributions, Zootaxa 3644 (1), pp. 1-178 : 81-82

Gonatocerus (Lymaenon) kusaka Triapitsyn , sp. n.

( Figs 132–135 )

Type material. Holotype female [ ZIN] on slide: RUSSIA. PRIMORSKIY KRAY, Ussuriyskiy rayon, Gornotayozhnoye , 27–29.v.1999, M.V. Michailovskaya, YPT. Paratypes: PRIMORSKIY KRAY: Terneyskiy rayon, Mel'nichnyi, 1–5.vi.2001 M.V. Michailovskaya [1 Ƥ on slide, UCRC]. Ussuriyskiy rayon, Gornotayozhnoye , M.V. Michailovskaya: 31.v–2.vi.1999 [1 Ƥ on point, UCRC]; 5–11.vi.1999 [1 Ƥ on slide and 1 Ƥ on point, UCRC]; 10–14.vi.1999 [1 Ƥ on slide and 1 Ƥ on point, UCRC]; 21.vi.2000 [1 Ƥ on point, UCRC]; 10– 20.v.2002 [1 Ƥ on slide, IBPV, and 4 Ƥ on points, CNCI (1), UCRC (2), ZIN (1)]; 20–31.v.2002 [1 Ƥ on point, UCRC]; 1–10.vi.2002 [2 Ƥ on points, UCRC].

Description. FEMALE. Body length 960–1220 µm (dry-mounted paratypes). Head and mesosoma dark brown to black, gaster brown to dark brown; antenna brown, legs mostly brown to dark brown.

Antenna ( Fig. 132 ) with radicle 0.34–0.36× total length of scape, rest of scape 2.8–3.3× as long as wide, almost smooth (slightly longitudinally striate); pedicel longer than F1; F1–F3 shorter than following funicle segments, F5 and F6 subequal in length and a little longer than F4, F7, or F8; mps on F4 (0 or 1), F5 (2), F6 (usually 2, rarely 3), F7 (2), and F8 (4 or 5); clava with 9 or 10 mps, 2.8–3.0× as long as wide, a little longer than combined length of F7 and F8.

Mesosoma ( Fig. 134 ). Propodeum ( Fig. 133 ) with submedian lines wide apart. Fore wing ( Fig. 135 ) 2.6– 2.9× as long as wide; longest marginal seta 0.23–0.25× maximum wing width; disc with a brownish tinge throughout, bare behind submarginal vein and setose elsewhere. Hind wing 16–17× as long as wide; disc rather densely setose and with a slight brownish tinge; longest marginal seta 1.9–2.3× maximum wing width.

Metasoma ( Fig. 134 ). Gaster notably longer than mesosoma. Petiole 2.7–3.2× as wide as long. Ovipositor long, occupying from 0.9× to usually entire length of gaster, markedly exserted beyond its apex (by 0.17–0.24× own length) posteriorly and occasionally slightly projecting anteriorly under petiole; ovipositor length: mesotibia length ratio 2.6–2.8:1.

Measurements (µm) of the holotype. Mesosoma 474; petiole 27; gaster 769; ovipositor 843. Antenna: radicle 72; rest of scape 133; pedicel 60; F1 32; F2 33; F3 39; F4 66; F5 76; F6 77; F7 68; F8 67; clava 179. Fore wing 1125:424; longest marginal seta 97. Hind wing 922:58; longest marginal seta 121.

MALE. Unknown.

Diagnosis. Gonatocerus kusaka is similar to G. acuminatus from which it differs by not having a bare area between the marginal vein and the cubital row of setae ( Fig. 135 ). The antenna of G. kusaka often bears a mps on F4 whereas that of G. acuminatus does not. Also see the diagnosis of G. kum .

Etymology. The species name (a noun in apposition) means “one that bites” in Russian.

Hosts. Unknown.

Figures

FIGURES 132 – 135. Gonatocerus (Lymaenon) kusaka Ƥ (holotype): 132, antenna; 133, dorsellum and propodeum; 134, mesosoma and metasoma; 135, fore wing.