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End-banded Net-Winged Beetle (Calopteron terminale)
Photo#1000015
Copyright © 2014
Seth Ausubel
Calopteron terminale or reticulatum? -
Calopteron terminale
New Hope/Bowman's Hill Wildflower Preserve, Bucks County, Pennsylvania, USA
September 18, 2014
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Contributed by
Seth Ausubel
on 22 September, 2014 - 7:59pm
Last updated 26 January, 2023 - 6:06pm
Moved
Moved from
Calopteron
.
…
Seth Ausubel
, 26 January, 2023 - 6:06pm
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Does blue tinge signify Calopteron terminale?
I'm not an expert but am struggling with a similar ID so would like to be a part of this discussion.
Evans' book
claims that Calopteron terminale have a blue tinge to them (other sources say purplish).
…
Colin Purrington
, 30 August, 2016 - 6:20am
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I think this is
reticulatum, based on the rusty color of the second antennal segment.
…
Seth Ausubel
, 6 September, 2016 - 6:57pm
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Rusty antennal segment
Thanks, Seth. Is that rust color something you can see from the images posted online, or just on original pics? The one I have doesn't seem to have any rust, so probably reticulatum like yours. Thanks, again.
…
Colin Purrington
, 8 September, 2016 - 1:22pm
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It's unclear.
BG info page mentions it but I can't see it in most of the photos. I just posted a new photo in reticulatum. See explanation there. Just a small trace of rusty visible.
…
Seth Ausubel
, 8 September, 2016 - 2:29pm
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C. terminale, because
The elytral ridges are of equal height (costae 2 and 4 would be raised in reticulatum); the interstitial cells are coarse-textured; the black areas are glossy, with a blue-black sheen (particularly visible in the second photo), and the overall shape of the elytra is more flaring, with more dramatic expansion beyond the midpoint.
The characters described in Green 1952 are very helpful for distinguishing between the 3 US species of Calopteron. In my experience, the color of antennal segments can rarely be seen in photos and is not a very helpful character.
…
Jessee J Smith
, 26 January, 2023 - 10:53am
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Thanks.
Hopefully an editor will add this to the info page.
…
Seth Ausubel
, 26 January, 2023 - 6:05pm
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