Gonatocerus (Gonatocerus) cincticipitis Sahad, 1982

Triapitsyn, Serguei V., 2013, Review of Gonatocerus (Hymenoptera: Mymaridae) in the Palaearctic region, with notes on extralimital distributions, Zootaxa 3644 (1), pp. 1-178 : 15-17

Gonatocerus (Gonatocerus) cincticipitis Sahad, 1982

( Figs 12–15 )

Gonatocerus sp. y: Sahad 1982a: 246 –259 (biology, previous references in Japanese as Gonatocerus sp. or Lymaenon sp.); Sahad 1982b: 467 –476 (morphology, immature stages).

Gonatocerus cincticipitis Sahad 1982c: 192–195 .

Holotype female [ KUEC] (not examined, but its photograph is available at: http://konchudb.agr.agr.kyushu-u.ac.jp/elkutype/exec/refile.cgi?&lang=en&no=2385&tax= Gonatocerus %20cincticip itis%20Sahad). Type locality: Matsue, Shimane Prefecture (Honshū Island), Japan.

Gonatocerus cincticipitis Sahad: Sahad & Hirashima 1984: 3 (list), 37–43 (redescription, illustrations, distribution, host association, biology).

Material examined. JAPAN. KANAGAWA, Yokohama , 4.viii.1920, C.P. Clausen [1 Ƥ, UCRC]. KOCHI, Agawa-gun, Iuo-cho, Niyodo, 7–10.viii.1974 (ex. Nephotettix cincticeps Uhler ) [2 Ƥ, 1 3, EMEC]. NIIGATA, Nagaoka, Teradomari , 25.x.1981, K.A. Sahad (ex. N. cincticeps on Oryza sativa) [5 Ƥ, 3 3, UCRC]. SHIGA, Kohoku-Cho, Imanishi , 17–25.x.1974 (ex. N. cincticeps ) [1 Ƥ, 2 3, EMEC]. SHIMANE, Matsue, Honjo Farm , 20.ix.1979, K.A. Sahad (ex. N. cincticeps on O. sativa ) [4 Ƥ, 6 3, UCRC]. REPUBLIC OF KOREA. GANGWON-DO, Pyengchang, Jinbu , Cheokchun , 23.ix.1998, J.- Y. Choi [1 Ƥ, UCRC]. GYEONGGI-DO, Suwon-si, Seodun-dong, Seoul National University : 10.x.1997, J.- Y. Choi [4 Ƥ, UCRC]; 17.ix.2002, J.- W. Kim [5 Ƥ, UCRC].

Distribution. PALAEARCTIC: Japan, and Republic of Korea ( Sahad & Hirashima 1984).

Redescription. FEMALE (non-type specimens). Body length 700–950 µm (dry-mounted specimens). Head dark brown; often scape, pedicel, and F1 light brown, remainder of flagellum brown but sometimes only radicle light brown and the rest of antenna brown; mesosoma light brown to brown with dark brown areas; metasoma light brown basally and brown or dark brown apically; legs yellow to light brown.

Antenna ( Fig. 12 ) with radicle 0.35–0.36× total length of scape, rest of scape 3.0–3.2× as long as wide; pedicel longer than F1; F1 a little shorter than F2 and about as long as F4 and F6, F2 about as long as F3, F5, F7, and F8 except when F5 sligtly shorter when lacking mps; mps on F5 (1 on one antenna and 0 or 1 on the other antenna), F7 (2) and F8 (2); clava with 8 mps, 3.1–3.2× as long as wide, about as long as combined length of F5–F8 or slightly shorter when F5 lacks mps.

Mesosoma ( Fig. 14 ) shorter than gaster. Propodeum ( Fig. 13 ) with fine submedian lines. Fore wing ( Fig. 15 ) 4.0–4.3× as long as wide; longest marginal seta 0.43–0.47× maximum wing width. Fore wing disc slightly infumate throughout, mostly bare behind submarginal vein and setose behind apex of submarginal vein and beyond. Hind wing 27–29× as long as wide; disc bare except for rows of setae along margins and a few additional setae, slightly infumate throughout; longest marginal seta 3.9–4.4× maximum wing width.

Metasoma ( Fig. 14 ) with petiole wider than long. Ovipositor 0.7–0.8× length of gaster, at most barely exserted beyond its apex; ovipositor length: mesotibia length ratio 1.4–1.5:1.

MALE (non-type specimens from Japan). Body length 630–920 µm (dry-mounted specimens). Similar to female except for normal sexually dimorphic features and the following. Scape and pedicel light brown, flagellum brown. Antenna with scape minus radicle 2.3–2.6× as long as wide. Fore wing 4.0–4.2× as long as wide.

Diagnosis. Gonatocerus cincticipitis is similar to G. aegyptiacus and G. fuscicornis from which it differs by the presence of mps on F5 on at least one antenna. It also differs from G. aegyptiacus , which also has a narrow fore wing ( Figs 4 , 6 ), by the discal setae on the fore wing ( Fig. 15 ) originating behind apex of the submarginal vein (behind base of the marginal vein in G. aegyptiacus ).

Host. Nephotettix cincticeps Uhler (Cidadellidae) ( Sahad 1982a [as G. sp. y], 1982b [as G. sp. y], 1982c; Sahad & Hirashima 1984). Biological traits of G. (Gonatocerus) cincticipitis were reported by Sahad (1982a) [as G. sp. y], Miura (1990a, 1990b), and Sahad & Hirashima (1984).

Figures

FIGURES 12 – 15. Gonatocerus (Gonatocerus) cincticipitis Ƥ (Teradomari, Nagaoka, Niigata, Japan): 12, antenna; 13, dorsellum and propodeum; 14, mesosoma and metasoma; 15, fore wing.

FIGURES 1 – 4. Gonatocerus (Gonatocerus) aegyptiacus Ƥ (1 — Sainte Colombe, Gironde, France; 2, 3 — Richmond Park, England; 4 — Matsue, Shimane, Japan): 1, antenna; 2, propodeum; 3, body; 4, fore wing.

FIGURES 5 – 7. Gonatocerus (Gonatocerus) aegyptiacus 3 (Richmond Park, England): 5, antenna; 6, fore wing; 7, genitalia.