End-banded Netwing - Calopteron reticulatum

lack of middle band is strange

This seems to be the first C. reticulatum that lacks a middle band. There's a similar situation on iNaturalist where I've weighed in with similar opinion. Here's link if of interest:

https://www.inaturalist.org/observations/15701275

... with a third possible sighting, referenced within comments in link above, from Missouri. But the Missouri pic is ID'd as C. terminale and the resolution is low.

… Colin Purrington, 16 January, 2019 - 8:28am

Moved

Moved from End Band Net-wing.

… Steven Mlodinow, 16 January, 2019 - 8:20am

Calopteron reticulatum

I think this might be C. reticulatum. Ridge heights seem to be alternating. No transverse dip of elytra.

… Colin Purrington, 16 January, 2019 - 6:45am

Thanks

Thanks Colin. Beyond ID of this individual, it is good to know of other ID marks
The location certainly is one that has a more eastern "feel" with a more easterly set of plants and insects than in most of CO. How certain are you of C reticulatum as the ID?
Steve

… Steven Mlodinow, 16 January, 2019 - 7:34am

antennae

Can you post a crop of the bases of the antennae? That's just to confirm that there's a rusty patch at base. Calopteron discrepans is fully black in that region. It's not a great feature because the angle doesn't always permit the view, but it's worth a look if you have additional views or zoom.

… Colin Purrington, 16 January, 2019 - 7:40am

Hi Steve. I'm fairly sure it's C. reticulatum. On addition reason to reject C. terminale is that this photograph doesn't show a distinct blue tinge. It's not always part of keys but I think the feature was in original descriptions. If you browse through the images for C. terminale you can see that under certain conditions the blue really pops out.

… Colin Purrington, 16 January, 2019 - 7:38am

Added

Close up of antennae and elytra
Not sure pic of elytra adds anything. Since shot with a flash, I'd expect the blue tinge to pop ore. I did look thru photos for the blue-tinge marks. Seems if present, useful. If absent, maybe not - as you said, it depends on lighting conditions (iridescence vs pigment, so more light dependent). The antennae hint at rust, but I am not certain if truly visible. Not used to looking carefully at that mark, so I leave this for your eyes. Thanks Again!

… Steven Mlodinow, 16 January, 2019 - 7:52am

rust

I see the rust, so it's not C. discrepans.

… Colin Purrington, 16 January, 2019 - 7:54am