horntail wood wasp

5917     I live in Kilworthy Ont. Canada…we believe they are coming out of our wood for heating our home…hope you can help me…thank you
Karen

This is a pigeon tremex, Tremex columba, a horntail wood wasp (Hymenoptera: Siricidae). Their larvae develop in the trunks of dead and dying trees, including ash, beech, cottonwood, elm, maple, and oak; they are not pests that need any control. See http://tinyurl.com/jzf2u4v for more detailed information on their life history.  Ed Saugstad, retired entomologist; Sinks Grove, WV.