Plutothrix zerovae Tselikh, Varkonyi & Dale-Skey, 2022

Tselikh, Ekaterina V., Varkonyi, Gergely & Dale-Skey, Natalie, 2022, Review of the genus Plutothrix Foerster, 1856 (Hymenoptera, Pteromalidae) with a key to Palaearctic species, Journal of Hymenoptera Research 93, pp. 1-32 : 1

Plutothrix zerovae Tselikh, Varkonyi & Dale-Skey sp. nov.

Figs 87-94

Comparison.

Plutothrix zerovae is similar to P. kuboi Kamijo, 2004; the differences between these species are given in the key.

Description.

Female. Body length 5.60-6.50 mm. Fore wing length 4.10-4.50 mm.

Head, mesosoma and Mt2-Mt6 metallic bluish-green with diffuse coppery lustre, Mt8 brown; ovipositor sheath black. Antenna with scape yellow, pedicel yellowish-brown, flagellum brown. All coxae metallic green with diffuse coppery lustre; all femora, tibiae and tarsi yellow except last segment yellowish-brown. Fore wing hyaline with one fuscous cloud touching stigma, venation yellowish-brown.

Head in dorsal view 2.10-2.26 × as broad as long and 1.16-1.19 × as broad as mesoscutum; in frontal view 1.24-1.26 × as broad as high. POL 0.90-1.00 × OOL. Eye height 1.43-1.46 × eye length and 2.10-2.22 × as long as malar space. Distance between antennal toruli and lower margin of clypeus 0.58-0.65 × distance between antennal toruli and median ocellus. Antenna with scape 0.85-0.89 × as long as eye height and 1.20-1.30 × as long as eye length; pedicel 2.00-2.07 × as long as broad and 0.72-0.80 × as long as F1; combined length of pedicel and flagellum 1.12-1.18 × breadth of head; F1 2.20-2.35 × as long as broad, F3-F6 longer than broad; clava 2.45-2.60 × as long as broad.

Mesosoma 1.55-1.60 × as long as broad. Scutellum finely reticulate, 1.18-1.20 × as long as broad. Propodeum without nucha, 0.86-0.90 × as long as scutellum; median carina present; sculpture weakly reticulate. Metapleuron reticulate, upper mesepimeron alutaceous. Fore wing 2.50-2.70 × as long as maximum width; basal cell, cubital vein, basal vein setose; speculum closed; PST 0.75-0.86 × as long as M, M 0.74-0.76 × as long as PM and 1.80-1.93 × as long as S.

Metasoma 4.30-4.40 × as long as broad, 1.80-1.95 × as long as mesosoma and 1.45-1.56 × as long as mesosoma and head; Mt2 emarginate medially, Mt8 2.20-2.50 × as long as broad. Ovipositor sheath projecting beyond apex of metasoma.

Male unknown.

Etymology.

The species is named in honour of the prominent entomologist, Dr M.D. Zerova (1934-2021), an expert on Eurytomidae , Torymidae and Ormyridae ( Hymenoptera ).

Material examined.

Holotype female (ZMUH): Finland: "Suomi, ES, Mikkelin mlk., 6830:501, 05.07.1987, leg. M. Koponen ", " Plutothrix coelius (Walker) det. M. Koponen ", " Holotype Plutothrix zerovae sp.n. Tselikh" . Paratypes. Finland (all in ZMUH): N, 1 female, "Suomi, Kauniainen , 09.07.1946, leg. A. Saarinen "; Ta, 1 female, " Suomi, EH, Luopioinen, 07.08.1976, leg. E. Kangas "; 1 female, "Suomi, EH, Luopioinen, 21.07.1956, leg. E. Kangas ", " Plutothrix coelius (Walker) det. M. Koponen "; 1 female, " Finland, Loppi, 03.07.1937, leg. C. Ahnger "; Sa, 1 female, " Finland, Ristiina, 6826:502, 28.06.1992, leg. M. Koponen ", " Plutothrix coelius (Walker) det. M. Koponen "; 1 female, "Suomi, ES, Ristiina, 6826:502, 08.07.1978, leg. M. Koponen ", " Plutothrix coelius (Walker) det. M. Koponen "; 1 female, " Suomi, ES, Mikkelin mlk, 6830:501, 03.09.1974, leg. M. Koponen ", " Plutothrix coelius (Walker) det. M. Koponen "; 1 female, " Finland, Ristiina, 6826:502, 03.07.1995, leg. M. Koponen "; Tb, 1 female, “Jyväskylä, Hellén, 208"; Kb, 1 female, "Suomi, PK, Tohmajärvi, 6908:660, 18.07.1982, leg. M. Koponen " . Russia: (ZMUH) Leningrad Prov., 1 female, "Viipuri, Linnaniemi, 610, MUS., ZOOL. UNIV. TURKU"; (ZISP) Smolensk Prov., 1 female, near Smolensk City , 54°49'01"N, 32°04'50"E, 22.VIII.2020, coll. S Belokobylskij.

Distribution.

Finland, Russia (European part of Russia).

Biology.

Unknown.

Figures

Figures 87 - 94. Plutothrix zerovae sp. nov., holotype female (87 - 94) 87 body, lateral view 88 head and mesosoma, dorsal view 89 head, frontal view 90 head, dorsal view 91 mesosoma, lateral view 92 antenna 93 body, dorsal view 94 wings. Scale bar: 2.1 mm (87).