Ooctonus orientalis Doutt, 1961

Triapitsyn, Serguei V., 2010, Revision of the Palaearctic species and review of the Oriental species of Ooctonus (Hymenoptera: Mymaridae), with notes on extralimital taxa 2381, Zootaxa 2381 (1), pp. 1-74 : 36-40

Ooctonus orientalis Doutt, 1961

( Figs 57–64 )

Ooctonus orientalis Doutt 1961: 306–308 ; holotype female [KUEC], not examined; type locality: Kitanoshoike , Ishikawa Prefecture, Honshu Island, Japan.

Type material examined. Paratypes: 2 females [ EMEC] on slide labeled: 1. “ex eggs of Tettigella viridis (Linne) Kitanoshoike , Japan (Ishikawa Prefecture) March 25, 1954 Coll. E. Kawase H. Ishizaki ”, 2. “ Ooctonus orientalis Doutt Paratypes ♀ ” ; 1 female, 1 male [ EMEC] on slide labeled: 1. “ Reared from eggs of Tettigella viridis (Linné) Hisae , Japan (Ishikawa Prefecture) March 25, 1954 coll. E. Kawase H. Ishizaki ”, 2. “ Ooctonus orientalis Doutt Paratypes ♂ ” ; 3 males [ EMEC] on slide labeled: 1. “ Reared from eggs of Tettigella viridis (Linne) Hisae , Japan (Ishikawa Prefecture) March 25, 1954 coll. E. Kawase H. Ishizaki ”, 2. “ Ooctonus orientalis Doutt Paratypes ♂♂♂ ”. Other paratypes [9 females and 12 males (including the allotype)] were deposited by the author of this species in KUEC ( Doutt 1961); these were not examined .

Material examined. JAPAN. Hokkaido Island , HOKKAIDŌ, Sapporo: Jozankei, 350 m, 30.vi.1989, M.J. Sharkey [1 ♀, CNCI]. Koganeyu, 15.vi.1992, E. Ikeda [1 ♀, CNCI]. Honshu Island : IBARAKI, Tsuchiura , 2–13.viii.1989, M.J. Sharkey [2 ♀, CNCI]. Tsukuba, NIAES, 15–25.vii.1989, M.J. Sharkey [1 ♂, CNCI] .

IWATE, Mt. Hayachine, 400 m, 19–25.vii.1989, H. Makihara, M.J. Sharkey [1 ♀, CNCI]. KYOTO, Kibune , 6.viii.1980, C.M. Yoshimoto [1 ♂, CNCI]. NAGANO, Nakakaruizawa , 1000 m , 20.vii.1980, A. & Z. Smetana [2 ♀, 1 ♂, CNCI]. TOCHIGI, Nishinasuno , 500 m , 10.viii.1989, M.J. Sharkey [1 ♀, 1 ♂, CNCI]. Kyushu Island, FUKUOKA: Mt. Hiko, 700 m, K. Takeno , M.J. Sharkey : 29.vi–10.vii.1989 [1 ♀, CNCI] ; 21– 29.vii.1989 [1 ♂, CNCI] ; 29.vii–11.viii.1989 [1 ♀, 1 ♂, CNCI] ; 1–15.xi.1989 [1 ♀, 1 ♂, CNCI]. Mt. Tachibana , 7–13.vii.1979, K. Yamagishi [1 ♀, CNCI]. RUSSIA. PRIMORSKIY KRAY, Gornotayozhnoye (18 km SE of Ussuriysk), 43.66°N 132.25°E, 200 m, M.V. Michailovskaya : 6.vi.1999 [3 ♀, 1 ♂, UCRC] ; 8.vi.1999 [2 ♂, UCRC] ; 11–12.vi.1999 [8 ♀, UCRC] ; 13–14.vi.1999 [2 ♀, UCRC] ; 15–16.vi.1999 [6 ♀, 3 ♂, UCRC] ; 17– 27.vi.1999 [8 ♀, 1 ♂, UCRC] ; 21–22.vi.1999 [10 ♀, 1 ♂, UCDC, UCRC] ; 23–24.vi.1999 [17 ♀, UCRC] ; 26– 28.vi.1999 [9 ♀, 1 ♂, UCDC, UCRC] ; 1–2.vii.1999 [5 ♀, UCRC] ; 3–4.vii.1999 [2 ♀, UCRC] ; 5–6.vii.1999 [1 ♀, UCRC] ; 9–10.vii.1999 [2 ♀, UCRC] ; 11–14.vii.1999 [1 ♀, 1 ♂, UCRC] ; 19–20.vii.1999 [7 ♀, UCRC] ; 21– 22.vii.1999 [32 ♀, IBPV (3), UCRC (26), ZIN (3)] ; 25–26.vii.1999 [1 ♀, 1 ♂, UCRC] ; 27.vii–1.viii.1999 [5 ♀, UCRC] ; 1–4.viii.1999 [1 ♀, 1 ♂, ZIN] ; 5–11.viii.1999 [2 ♀, UCRC] ; 15–17.viii.1999 [1 ♀, 1 ♂, IBPV] ; 17–18.viii.1999 [1 ♂, UCRC] ; 11–12.vi.2000 [1 ♀, UCRC] ; 12.vii.2000 [1 ♀, UCRC] ; 22–28.viii.1999 [3 ♀, UCRC] ; viii–ix.1999 [4 ♀, 3 ♂, UCRC] ; 10–15.ix.1999 [1 ♀, UCRC] ; 21–31.vii.2000 [1 ♀, UCRC] ; 1– 10.viii.2000 [1 ♀, UCRC] ; viii.2000 [6 ♀, 1 ♂, UCRC] ; 1–10.vi.2002 [1 ♀, UCRC]. SAKHALINSKAYA OBLAST’, Sakhalin Island, 6 km E of Sokol, near Belaya River , 47°14.56’N 142°46.56’E , 16.viii.2001, D.J. Bennett, T. Anderson [1 ♂, CAS] .

Redescription. FEMALE (paratypes and non-type specimens). Body length 860–1400 µm. Head and mesosoma dark brown or black except eyes and ocelli pale or dirty pink; petiole yellowish brown; gaster brown; scape and pedicel mostly yellowish or light brown (pedicel often with some darker areas), flagellum brown to dark brown (F1 sometimes light brown); legs yellowish or light brown except distal tarsomeres darker.

Head ( Fig. 58 ) a little wider than mesosoma; vertex with conspicuous reticulate sculpture, lower face with faint, inconspicuous reticulate sculpture.

Antenna ( Fig. 57 ) with radicle 0.16–0.18x length of scape, remainder of scape 4.3–4.8x as long as wide, a little wider medially than basally or apically, faintly longitudinally striate; pedicel normally a little longer than F1; all funicle segments longer than wide, F1–F4 more or less subequal in length (F1 slightly shorter, and F4 occasionally slightly longer when bearing a mps), usually without mps but F3 very rarely with 1 mps on one of the antennae and F4 sometimes with 1 mps on one or both antennae, F5–F8 more or less subequal in length, usually slightly longer than F1–F4 and each with 2 mps, but rarely F6 with just 1 mps or without sensilla; clava 3.3–4.2x as long as wide, about as long as scape plus radicle, a little longer than combined length of F6– F8 and about as long or a little shorter than combined length of F1–F4, with 7 mps.

Mesosoma ( Fig. 61 ) with pronotum weakly sculptured; mesoscutum and scutellum with reticulate sculpture (the cells smaller and less conspicuous on anterior scutellum), midlobe of mesoscutum sometimes almost without a median groove or, usually, with a narrow median groove of variable length, from a very short groove, just at posterior margin of mesoscutum, to a long groove anteriorly narrowing and extending almost to 0.7x length of mesoscutum; metanotum smooth, almost strap-like or with posterior margin very broadly rounded; propodeum ( Fig. 59 ) mostly smooth, with median carina usually shorter than median areole (but about the same length as median areole in the dorsoventrally mounted paratype), lateral carinae not parallel to median carina, each lateral carina split anteriorly, forming broadly Y-shaped carina not extending to anterior margin of propodeum.

Forewing ( Fig. 60 ) 2.8–3.2x as long as wide; disc with slight brownish tinge throughout, densely setose but bare behind base of submarginal vein, at least slightly truncate apically; longest marginal seta 0.18–0.22x greatest width of wing. Hind wing 16–17x as long as wide; disc with a very slight brownish tinge (almost hyaline) and setose almost throughout except bare or with sparse setae behind and just beyond apex of venation; longest marginal seta 1.6–1.8x greatest width of wing.

Pro- and mesocoxae almost smooth, metacoxa with weak to more pronounced sculpture.

Gaster about as long or a little longer than mesosoma; petiole 4.0–4.4x as long as wide, smooth, 1.3–1.5x as long as metacoxa; ovipositor relatively short, occupying 0.5–0.7x length of gaster, slightly exserted beyond apex of gaster (usually by about 0.1x, but occasionally up to 0.2x own length), 0.7–1.0x length of metatibia.

MALE (paratypes and non-type specimens). Body length 980–1330 µm. Similar to female except for the normal sexually dimorphic features and the following. Antenna ( Fig. 62 ) with scape plus radicle 4.0–4.7x as long as wide, flagellum brown to dark brown; forewing ( Fig. 63 ) 2.5–3.1x as long as wide, truncate apically; genitalia as in Fig. 64 .

Diagnosis. Ooctonus orientalis is characterized by the lateral carinae split anteriorly, each forming a broadly Y-shaped carina not extending to the anterior margin of the propodeum.

Distribution. PALAEARCTIC: Japan, and Russia * (Sakhalin Island and Primorskiy kray).

Hosts. Cicadella viridis (Linnaeus) ( Doutt 1961) [as Tettigella viridis (Linnaeus) ] and Nephotettix cincticeps (Uhler) ( Sahad 1982) (Cicadellidae) .

Comments. Most of the numerous specimens from Gornotayozhnoye in the Russian Far East were collected by yellow pan traps, thus indicating to the likely habitat (grasses, low vegetation) of this species. One of its known hosts, C. viridis , is a common leafhopper in the Malaise and yellow pan trap samples from the same site.

Figures

FIGURE 61. Ooctonus orientalis ♀ (Gornotayozhnoye, Primorskiy kray, Russia): mesosoma (scanning electron micrograph).

FIGURES 57–60. Ooctonus orientalis ♀ (Gornotayozhnoye, Primorskiy kray, Russia): 57, antenna; 58, head (frontal view); 59, propodeum; 60, forewing.

FIGURES 62–64. Ooctonus orientalis ♂ (Gornotayozhnoye, Primorskiy kray, Russia): 62, antenna; 63, forewing; 64, genitalia.