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Parasitic Hymenoptera associated with Thecodiplosis brachyntera (Diptera: Cecidomyiidae) on the genus Pinus (Pinaceae) in the Czech Republic

Author

Listed:
  • V. Skuhravý

    (Prague, Czech Republic)

  • C. Thuróczy

    (Koszeg, Hungary)

Abstract

Aprostocetus micantulus (Thomson, 1878) (Chalcidoidea: Eulophidae), Torymus heyeri Wachtl, 1833 (Chalcidoidea: Torymidae), Pseudencyrtus idmon (Walker, 1848) (Chalcidoidea: Encyrtidae) and Platy-gaster compressicornis (Thomson, 1859) (Platygasteroidea: Platygasteridae) are four main parasitoids reared from galls of Thecodiplosis brachyntera (Schwägrichen, 1835) (Diptera: Cecidomyiidae) developing on Pinus mugo L., P. rotundata Link, P. sylvestris L. and P. × pseudopumilio (Willk.) G. Beck (Pinaceae) in the Czech Republic during outbreak 1967-1972. Of total 4,279 parasitoid specimens, Platygaster compressicornis (1,778 specimens, 41%) was the most abundant, Aprostocetus micantulus (1,047 specimens, 25%) and Pseudencyrtus idmon (1,020 specimens, 24%) less abundant and Torymus heyeri (434 specimens, 10%) was on the fourth place of abundance. In laboratory conditions, adults of Platygaster compressicornis emerged simultaneously with adults of T. brachyntera, adults of Pseudencyrtus idmon and Torymus heyeri 14-24 days after emergence of T. brachyntera and adults of Aprostocetus micantulus after 24-60 days. Behaviour of adult parasitoid during the process of building the opening hole to escape from gall is described. Larvae identified and figured by FANKHÄNEL and ZELETZKI (1964) as larval stage of Misocyclops pini are misidentification; in reality they are the salivary glands of larvae of Thecodiplosis brachyntera.

Suggested Citation

  • V. Skuhravý & C. Thuróczy, 2007. "Parasitic Hymenoptera associated with Thecodiplosis brachyntera (Diptera: Cecidomyiidae) on the genus Pinus (Pinaceae) in the Czech Republic," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 53(8), pages 381-389.
    • Handle: RePEc:caa:jnljfs:v:53:y:2007:i:8:id:2180-jfs
    DOI: 10.17221/2180-JFS
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