Further records of two spider-parasitoids of the genus Polysphincta (Hymenoptera, Ichneumonidae, Ephialtini) from Central Europe, with notes on
Further records of two spider-parasitoids of the genus Polysphincta (Hymenoptera, Ichneumonidae, Ephialtini) from Central Europe, with notes on
Neue Nachweise von zwei Spinnen-Parasitoiden der Gattung Polysphincta (Hymenoptera, Ichneumonidae, Ephialtini) aus Mitteleuropa, mit Beobachtungen ihrer Wirts-Interaktionen
behavioural alteration, diversity, spider host
Abstract
A polysphinctine wasp Polysphincta longa, associated with the orb web building spider Araneus angulatus, was recorded for the first time in Slovakia. Further, the congener Polysphincta tuberosa was recorded in association with a new spider host Araneus sturmi. New distribution records of Polysphincta species from the Czech and Slovak Republics are presented. The final stage larva of both, P. longa and P. tuberosa, induced a specific alteration in web architecture: the spider constructed a unique 3D tangle of silk – so called “cocoon web” – to protect the parasitoid during the pupal stage. The host range of wasps belonging to the genus Polysphincta in Europe is discussed.
Die Schlupfwespe Polysphincta longa, die mit der Radnetzspinne Araneus angulatus assoziiert ist, wurde erstmals in der Slowakei gefunden. Polysphincta tuberosa wurde erstmals an der Wirtsart Araneus sturmi nachgewiesen. Neue Vorkommen von Polysphincta-Arten in der Tschechischen Republik und der Slowakei werden präsentiert. Die Larven des letzten Stadiums von P. longa und P. tuberosa induzieren eine spezielle Veränderung der Netzarchitektur: die Spinnen bilden ein dreidimensionales ‚Kokonnetz‘ um die Puppe des Parasitoiden zu schützen. Die Wirtsspektren der Polysphincta-Arten in Europa werden diskutiert.
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