Associations Among Serropalpus substriatus (Coleoptera: Melandryidae) and Sirex (Hymenoptera: Siricidae) Communities
Year: 2025
Type: article
Abstract: Serropalpus substriatus Haldeman (Coleoptera: Melandryidae) develops within the same trees as Sirex noctilio F. and Sirex cyaneus F. (Hymenoptera: Siricidae). This species is now reported emerging from red pine (Pinus resinosa Sol. ex Aiton) and balsam fir (Abies balsamea (L.) Mill.) (Pinaceae) in eastern North America. Numbers of Se. substriatus emerging from pines were always much lower than numbers of Sirex in trees, and 18% of Se. substriatus required 2 years before emergence. During first years of emergence, Se. substriatus was found in only 12 of 41 sampled red pines infested by Si. noctilio. Trees from which Se. substriatus emerged hosted higher densities of Sirex than trees without Se. substriatus. Comparing dually infested trees, Deladenus siricidicola Bedding, the parasitic/mycophagous nematode associated with Si. noctilio, was found parasitizing one of 141 (0.7%) Se. substriatus. This is the first report of a non-target impact of D. siricidicola in North America, but parasitism was very low in this uncommonly encountered woodboring beetle. In Europe, a related species, Serropalpus barbatus Schaller, has also been reported to be parasitized by D. siricidicola.
Source: The Great Lakes Entomologist
Authors: Tonya D Bittner, Ann E Hajek, James K Liebherr
Institution: Cornell University
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
SDG: Life on land
Open Access status: bronze
OpenAlex ID: W4410288128