Shoot borer, walnut Red Oak Prairie, Allamakee County, Iowa, USA July 25, 2016
I saw this sign a few times on shoots of black walnut in 2016. In this case I tore into it, revealing a larva inside. Definite head capsule so not Diptera, but with these pictures, unfortunately, I can't quite tell if it's a lep or a beetle (can't rule out sawfly either I suppose ;)
I've heard that walnut is a tough plant, chemically speaking, and it always amazes me to find insects eating such plants.
Rearing in progress.
Images of this individual: tag all Contributed by John van der Linden on 18 January, 2017 - 8:13pm Last updated 13 October, 2018 - 7:18am |