Entomophaga

, Volume 14, Issue 2, pp 229–241 | Cite as

Cynipoidea undIchneumonidae [Hym.] Als Parasiten vonBoriomyia subnebulosa (Steph.) [Neur., Hemerobiidae]

  • Erhard Lipkow
Mémoires Originaux

Zusammenfassung

Boriomyia subnebulosa hat in NW-Deutschland 2 Generationen.B. subnebulosa (Steph.) erscheint so spät im Frühjahr, dass sie die frühschlüpfenden BlattläuseRhopalosiphum insertum (Wlk) in den Obstanlagen nicht wirksam dezimieren kann.

27 bzw. 52% der Larven vonB. subnebulosa waren 1966 und 1967 in Obstanlagen bei Kiel parasitiert. Als Parasiten traten auf: die CynipidenAegilips striolataCam undAe. petiolataKief (zusammen: 12,3/34,0%),Ae. bicolorataCam (1,8/2,1%),Anacharis ensiferaWlk (4,1/8,3%),A. immunisWlk (2,0/4,2%),A. typicaWlk (0,5/0,4%) und die IchneumonideHemiteles brunneusMorl (5,9/1,5%).

Summary

In NW-GermanyBoriomyia subnebulosa has 2 generations. The photoperiod (short day) induces a facultative larval diapause. The larva hibernates as pre-pupa.B. subnebulosa appears as late in spring that it cannot efficiently reduce the early emerging aphidRhopalosiphum insertum in the orchards.

In orchards near Kiel in 1966 and 1967 27% resp. 52% of the larvae ofB. subnebulosa were parasitized. As parasites appeared: the CynipidsAegilips striolata andAe. petiolata (together 12.3/34.0%),Ae. bicolorata (1.8/2.1%),Anacharis ensifera (4.1/8.3%),A. immunis (2.0/4.2%),A. typica (0.5/0.4%) and the IchneumonidHemiteles brunneus (5.9/1.5%).

Aegilips andAnacharis are solitary endoparasites. Their last-instar larvae leave the host and then completely eat it up from the outside.Aegilips andAnacharis are polyvoltin and have a facultative larval diapause. They hibernate as larva in their host.Anacharis and the solitary ectoparasiteHemiteles brunneus can also hibernate as pre-pupa in the cocoon ofBoriomyia. Aegilips striolata andAnacharis ensifera develop at 45–100% air humidity at a temperature from 8–28°C. The morphology of eggs and larvae ofAegilips andAnacharis is described.

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Copyright information

© Le François 1969

Authors and Affiliations

  • Erhard Lipkow
    • 1
  1. 1.Institut für Phytopathologie der Universität KielDeutschland

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