Lilac Borer from Canada

Subject:  Some Type of wasp or hornet
Geographic location of the bug:  Ontario, Canada
Date: 06/26/2018
Time: 11:34 AM EDT
Your letter to the bugman:  I came across this type of hornet that I had not seen before and looked up in a big identification website but nothing there was similar to this particular one.
How you want your letter signed:  Hornet identification for Chuck

Lilac Borer

Dear Chuck,
Though it looks very convincingly like a hornet or wasp, this Lilac Borer,
Podosesia syringae, is actually a moth in the family Sesiidae, whose members are very convincing wasp mimics, including this Sycamore Borer.  Here is an image from BugGuide that supports our identification.  According to BugGuide:  “Larvae bore in the limbs and trunk of various Oleaceae, including ash (Fraxinus), lilac (Syringae), olive (Olea), privet (Ligustrum) and fringetree (Chionanthus). It can be a serious pest in commercial plant operations.”  This is a new species for our site.

Thanks Daniel,
Very interesting.. Sure looked like a hornet or wasp, but I can see that this makes sense now..

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