A new species of genus <i>Eriborus</i> Förster (Hymenoptera: Ichneumonidae) parasitizing <i>Holcocerus insularis</i> Staudinger (Lepidoptera: Cossidae)

Sheng, M. & Sun, S. 2006: Anew species of genusEriborusForster (Hymenoptera: Ichneumonidae) parasitizing Holcocerus insularis Staudinger (Lepidoptera: Cossidae). — Entomol. Fennica 17: 170–173. A new important parasitoid of Holcocerus insularis Staudinger, viz. Eriborus applicitus sp. n., collected from Shenyang, China, is described. The adults of E. applicitus emerge during the daytime, mostly at 8–11 AM, and start calling and mating one hour after the emergence. The ratio of males : females is approx. 2:3. Within 3–4 hours after their emergence, the newly-emerged virgin females strongly attract males; they are still attracting males at day 2, although their callingbehaviorseemsmuchlessintensivethanatday1.Nocallingormatingbehavior occurs during night time. Females can mate at least twice before laying eggs, whilemalescanonly mateonce. Matedfemalessearchtheir hostsby walkingon the bark surface of H. insularis-infested Malus baccata (L.) Borkh. trees for oviposition.