Insects and Spiders - native

Unknown insect or spider on Aug 3, 2019

Originally reported as A metallic wood-boring beetle (Agrilus cyanescens)

Submitter does not have a specimen
EDRR Status: Ongoing monitoring

Description of specimen

I’ve only seen one beetle so far. It was unusual, iridescent blue, elongated and I’ve never seen it before, so I was concerned. Unfortunately I didn’t collect it or take a photo before it disappeared, but I’m certain it was the Agrilus cyanescens after looking at photos from a link sent to me by the Backyard Habitat.


Hi Tahn, As I mentioned to you in an email, you very well could have seen a beetle belonging to the Agrilus genus (the most diverse insect genus on the planet). Without a specimen, it is impossible to say what species. It could have also been another species in the same family, Buprestidae, or a completely different insect.

For those interested, please take a picture or collect a specimen of the insect in question, or take a sample of an injured plant part for proper identification.

To answer your question about the host range of Agrilus cyanescens, in the published literature, the host range of this insect is primarily Lonicera sp, which includes honeysuckle and twinberry. It has also been noted developing in Symphoricarpos and Rhamnus.


Wyatt Williams
Aug. 8, 2019, 10:17 a.m.