Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Chalcid-flies (Hym., Chalcidoidea) reared from Ips typographus L. and Pityogenes chalcographus L. at some Norwegian localities.

Abstract

Twelve species of chalcidoids were found as parasites or hyperparasites of Ips typographus (L.) and I. chalcographus (L.) (Pityogenes chalcographus) in logs of fallen and standing trees of Picea abies in Norway. Eurytoma blastophagi Hedqvist, Roptrocerus xylophagorum (Ratz.), R. brevicornis Thoms., Dinotiscus eupterus (Wlk.) and Tomicobia seitneri (Ruschka) predominatated. Except for R. xylophagorum they represent new records for Norway, as do E. arctica Thoms. and Heydenia pretiosa Forst. (which were rarely found), Rhopalicus brevicornis Thoms. and Mesopolobus typographi (Ruschka) E. morio Dalm. and R. tutela (Wlk.) were already known from Norway but are more frequently associated there with bark-beetles infecting pine than those infesting spruce.