Hymenoptera: Chalcidoidea: Pteromalidae)
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ZOOSYSTEMATICA ROSSICA, 18(1): 73-82 3 July 2009 Review of Kazakhstan species of the genus Pachyneuron Walker, 1833 (Hymenoptera: Chalcidoidea: Pteromalidae) K.A. DZHANOKMEN K.A. Dzhanokmen, Institute of Zoology, Akademgorodok, 93 Al-Farabi Ave., Almaty 050060, Kazakhstan. Ten species of Pachyneuron are reported from Kazakhstan. Data on distribution and biology are reported for the first time for most of these species. A key to the species is provided. Key words: Hymenoptera, Pachyneuron, Kazakhstan INTRODUCTION Pachyneuron aphidis (Bouché, 1834) (Figs 1-4) Pachyneuron Walker, 1833 is a cosmo- politan genus. Members of the genus are Material examined. Kazakhstan: North Ka- mainly hyperparasites of Homoptera (Aphi- zakhstan Prov., 2 females, near town of Shchu- doidea, Coccoidea and Psylloidea) through chinsk, on Salix sp., 27 July 1976, D.K.; Akmolinsk Hymenoptera (Ichneumonoidea: Braconi- Prov., 4 females, in the vicinity of Zhuravlevka vil- lage, from aphids (unknown species), July 1974, dae, Aphidiinae; Chalcidoidea: Encyrtidae, S.N.; South Kazakhstan Prov., 60 females, 47 males, Aphelinidae), or primary and secondary town of Dzhetysay, from Pterochloroides persicae parasites of the predators of aphidopha- Chol. (Aphididae, Lachninae) on Persica vulgaris gous Diptera (Syrphidae, Chamaemyidae), Mill., 28 Oct. 1977, F.M.; 1 female, same locality, Coleoptera (Coccinellidae), Neuroptera from Aphis fabae Scopoli (Aphididae, Aphidinae) (Chrysopidae), and also of eggs of Lepi- on Rumex confertus Willd., 24 Sept. 1978, F.M.; 3 doptera (Graham, 1969; Bouček, 1965, females, 2 males, same locality, from Hyalopterus 1970, 1977, 1988; Dzhanokmen, 1978, 1984; pruni (Geoffroy) (Aphididae, Aphidinae) on Ar- meniaca vulgaris Lam., 29 May 1976, F.M.; 2 fe- Gafarov, 1979; Noyes, 1998; Gibson, 2001). males, 1 male, same locality, swept from Tamarix The taxonomy of the Kazakhstan species sp., 9 Aug., 1 Sept. 1980, D.K.; Kzylorda Prov., 2 of Pachyneuron is not yet completely cleared females, 1 male, near Chiili railway station, from up. Ten species as occurring in Kazakhstan aphids (unknown species) on Alhagi pseudalhagi are recorded here. The key to European (M. B.) Desv., 20 June 1984, D.K.; Zhambyl. Prov., species given by Graham (1969) is modified 2 females, 10 males, near Karatau town, mot- here because P. erzurumicum Doğanlar, 1986 ley grass meadow, 27 May – 3 June 2000, D.K.; has been found in Kazakhstan, and also be- Almaty Prov., 2 males, Petropavlovka village, northern spurs of Dzungarian Alatau Mountain cause since then some changes in nomen- Range, Lepsy R. flood lands, secondary parasite clature have been made. In the meantime, of Cacopsylla hippophaes (Förster) (Psyllidae) some difficulties remain because morpho- larvae through Encyrtidae, on Hippophae rham- logical characters separating some species noides L., 25 June 1985, Kh.L.; 6 females, 4 males, are rather small. It concerns mainly some near Karaagash village, lower Ili R. flood lands, in rather variable species such as P. formosum gallery forest, on Berberis iliensis M. Pop., 21-29 Walker, P. groenlandicum (Holmgren), and May, 15 Aug. 2003, D.K.; 1 female, Masak, Chi- P. leucopiscida Mani. lik R. flood lands, on Tamarix ramosissima Ledeb. The following abbreviations are used for in gallery forest, 14 June 2006, D.K.; 1 female, Kaskelen Distr., from aphid on spring wheat, July collectors of the material: D.K. – K.A. Dzha- 1979, S.A.; 1 female, 26 km SW of Almaty, motley nokmen; F.M. – M.Ya. Fol’kina; K.V. – V.L. grass meadow, 9 July 1996; 1 female, 72 km NE of Kazenas, Kh.L. – L.G. Khlebutina; L.V. – Almaty, motley grass, 3 July 2007, D.K.; 1 female, V.G. Linskiy; S.A. – A.E. Slivkin; S.E. – E.S. Talgar town, on herbage, 18 July 2006, D.K.; 3 fe- Sugonyaev; S.N. – N.E. Smailova; T.N. – males, 4 males, near Turgen village, 19 July 2006; N.G. Telepa. East Kazakhstan Prov., 1 female, 30 km NW of © 2009 Zoological Institute, Russian Academy of Scienсes 74 K.A. DZHANOKMEN. PACHYNEURON FROM KAZAKHSTAN Figs 1-4. Pachyneuron aphidis. 1, antenna, female; 2, anterior margin of clypeus and mandibles, fe- male; 3, fore wing venation, female; 4, antenna, male. Kaynar village, Kazakh Melkosopochnik, swept Pachyneuron formosum Walker, 1833 from herbage, 22 June 1978, D.K.; 7 females, 3 (Figs 8-10) males, near Kaznakovka village, sand-dunes, swept from herbage, 25 June 1979, D.K. Material examined. Kazakhstan: 1 female, Hosts. This species develops as a prima- 9 males, South Kazakhstan Prov., near Karatau town, 27 May – 5 June 2000, D.K.; 6 females, ry parasite or a hyperparasite. A list of the 2 males, Almaty Prov., Koktuma village, south- hosts of this species includes Homoptera ern shore of Alakol’ L., on Elaeagnus oxycarpa (Aphidoidea: Aphididae, Pemphigidae; Coc- Schlecht., 10 July 2007, D.K. coidea: Coccidae, Kermesidae, Pseudococ- Hosts. Parasite of aphidophagous Syr- cidae; Psylloidea: Psyllidae), Diptera (Syr- phidae: Syrphus ribesii L., Epistrophe bal- phidae, Cecidomyiidae) and Hymenoptera teata (DeGeer), Xanthandrus comptus Harr. (Braconidae: Aphidiinae; Chalcidoidea: En- (Graham, 1969; Bouček, 1977). cyrtidae, Aphelinidae). Distribution. United Kingdom, France, Distribution. Cosmopolitan species. Ger many, Italy, Middle East, Kazakhstan, Kyrghyzstan, Tajikistan. Pachyneuron erzurumicum Doğanlar, 1986 (Figs 5-7) Pachyneuron grande Thomson, 1878 Material examined. Kazakhstan: Mangistau Material examined. Kazakhstan: North Ka- Prov., 1 female, Aktau town (former Shevchenko zakhstan Prov., 2 females, near Barmashino, town), botanical garden, on Tamarix sp., 12 June glades in birch forest, 12 Aug. 1976, D.K. 1989, D.K.; Almaty Prov., 2 females, southern Host. In Europe, the species has been part of Balkhash L. basin, lower Ili R. valley, near reared from puparia of aphidophagous syr- Karaagash village, on T. ramosissima Ledeb., 31 phids Syrphus arcuatus Fll. and Epistrophe May 2003, 7 June 2004, D.K. balteata (DeGeer) (Graham, 1969). Host. Unknown. Distribution. Europe, Kazakhstan, Kyr- Distribution. Turkey, Kazakhstan. ghyz stan. © 2009 Zoological Institute, Russian Academy of Scienсes, Zoosystematica Rossica 18(1): 73-82 K.A. DZHANOKMEN. PACHYNEURON FROM KAZAKHSTAN 75 Figs 5-7. Pachyneuron erzurumicum, female. 5, antenna; 6, anterior margin of clypeus and mandibles; 7, fore wing venation. Figs 8-10. Pachyneuron formosum, female. 8, antenna; 9, anterior margin of clypeus and mandibles; 10, fore wing venation. © 2009 Zoological Institute, Russian Academy of Scienсes, Zoosystematica Rossica 18(1): 73-82 76 K.A. DZHANOKMEN. PACHYNEURON FROM KAZAKHSTAN Pachyneuron groenlandicum July 1982, S.A.; 2 females, 70 km N of Almaty, (Holmgren, 1872) on Elaeagnus oxycarpa Schlecht., 7 June 2006, (Figs 11-13) D.K.; 3 females, 1 male, 8 km SW of Zharkent town, 5 and 16 Sept. 1970, K.V.; 1 female, East Pachyneuron umbratum Delucchi, 1955. (Syn- Kazakhstan Prov., near Semipalatinsk town, 5 onymy by Hedqvist, 1977). Aug. 1981, D.K. Material examined. Kazakhstan: North Ka- Host. Reared from puparia of Sphaero- zakhstan Prov., 1 female, 2 males, Leonidovka phoria scripta L. (Syrphidae) and from pu- village, from syrphid puparia, 13 Aug. 1981, T.N.; paria of undetermined species aphidopha- Atyrau Prov., 6 females, Caspian depression, 45 gous syrphids. There is also one record from km W of Ganyushkino railway station, Kigach Oscinella frit (L.) (Chloropidae) (Graham, R. flood lands, on Tamarix sp., 15 Aug. 1985, 1969). D.K.; 1 female, 7-10 km N of Atyrau, Ural R. Distribution. Holarctic Region. valley, 15 May 2003, K.V.; 17 females, Southern part of Balkhash L. basin, lower Ili R. valley, near Remarks. The status of P. groenlandicum Karaagash village, on T. ramosissima, 13-31 May, is rather doubtful, and this taxon probably 12-15 Aug. 2003, D.K.; 5 females, 3 males, near falls within range of variation of P. formo- Almaty, from puparia of Sphaerophoria scripta L. sum. These two species are very similar, but (Syrphidae) on wheat, 25 June 1981, S.A.; 3 fe- typical P. groenlandicum has marginal vein males, 3 males, near Almaty, on cabbage, from as long as, or slightly longer than the stig- puparia of Syrphidae, 21.Aug., 19 Sept. 1974, mal vein; basal vein with 2-12 setae; whilst L.V.; 2 females, Kaynazarka village, on herba- typical P. formosum has marginal vein a ceous plants, 1 June 2000, 8 Aug. 1998, D.K.; little shorter than the stigmal vein; basal near Turgen’ village, foothills of Trans-Ili Alatau Mts., pasture, 19 July 2006, D.K.; 2 females, 25 vein usually bare or rarely with 1-2 setae. km S of Turgen village, Trans-Ili Alatau Mts., 19 These differences are small and not reliable and 23 July 1971, D.K.; 2 females, 1 male, Zhala- for separating P. groenlandicum from P. for- nash village, from syrphid puparia on barley, 23 mosum. On the other hand, in some series Figs 11-13. Pachyneuron groenlandicum, female. 11, head (front view); 12, antenna; 13, fore wing venation. © 2009 Zoological Institute, Russian Academy of Scienсes, Zoosystematica Rossica 18(1): 73-82 K.A. DZHANOKMEN. PACHYNEURON FROM KAZAKHSTAN 77 all intermediate forms occur. For instance, found amongst aphids Brachycaudus persicaeco- in a material of P. formosum reared from la Boisd. (Aphididae) on Prunus domestica L., puparia of Ischiodon scutellaris F. (Syrphi- 21 Aug. 1969, F.M.; 1 female, same locality, from dae) on cotton (Tajikistan, 1 June 1977, puparia of L. ninae found amongst Hyalopterus leg. Gafarov) some females have marginal pruni (Geoffr.) (Aphididae) on Phragmites aus- tralis (Cav.) Trin., 15 Aug. 1968, F.M. vein and pilosity of the basal vein of the fore Hosts. Cremifania nigrocellulata Cz. (Cha- wing as in typical P. formosum, others are mae myiidae) (Graham, 1969), Leucopis ar- intermediate in these characters between gentata Heeger, L. glyphinivora Ta na sijtshuk, P. formosum and P. groenlandicum or virtu- L. argenticollis Ztt., L. ninae Tanasijtshuk ally identical with typical P. groenlandicum. Bouček (1965) suggested that P. umbratum (Chamaemyiidae) (Dzhanokmen, 1984). might be conspecific with as P.