PARASITOID COMPLEX SCOLYTUS INTRICATUS RATZ. (COLEOPTERA SCOLYTIDAE) IN THE REGION OF SERBIA

摘要

Oak bark beetle, as the vector of the spores of the vascular fungus Ophistoma piceae (Munch.) H. et P. Sydow, is a significant link in the chain of agents of oak forest decline in Serbia. As the number of the present adult beetles of S. intricatus innature directly affects the intensity and the rate of fungus widespreading, during 1992 and 1993, its parasitoid complex was researched in detail. The research included 43 samples from 22 localities in Serbia. By the determination of the obtained parasitoids, the following species have been identified: Platygerrhus maculatus Erdos, P. ductilis Walker, Rhaphitelus maculatus Walker, Rh. ladenbergi (Ratz.) Boucek, Acrocormus semifasciatus Thoms., Cheiropachus quadrum (F.) Westwood, Rhopalicus tutela Walker (Chalcidoidea, Pteromalidae), Eupelmus urozonus Dalm. (Chalcidoidea, Eupelmidae), Eurytoma morio Boheman, (Chalcidoidea, Eurytomidae), Entedon ergias Walk., E. euphorion Walk., Entedon sp. (Chalcidoidea, Eulophidae), Dendrosoter protuberans Ness., Spathius brevicaudis Ratz., Coeloides sordidator Ratz. and Ecphylus silesiacus Ratz. (ichneumonoidea, Braconidae). P. maculatus Erdos., P. ductilis Walker, Rh. tutela Walker (Pteromalidae, Chalcidoidea) and C. sordidatar Ratz. (Braconidae) have been identified for the first time as the parasitoids of S. intricatus. The species P. maculatus, R. ladenbergi, R. tutela, E. euphorion, S. brevicaudis and C. sordidator are the new species in the fauna of Yugoslavia.