Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Discussion of 2018 gathering

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

TaxonomyBrowseInfoImagesLinksBooksData
Photo#83411
Chrysomelid - Brachypnoea clypealis

Chrysomelid - Brachypnoea clypealis
1 mi W of Greenfield, Hancock County, Indiana, USA
July 21, 2002
Size: ~ 3 mm
I believe this is Nodon*ta trist*is (Olivier).

EDIT: This is actually B. clypealis.

Images of this individual: tag all
Chrysomelid - Brachypnoea clypealis Chrysomelid - Brachypnoea clypealis

Moved
Moved from Brachypnoea.

Finally added some better shots.

Moved
Back to guide.

Moved

Will frass
Frassing due to misidentification. Will repost with better shots of identifying characters.

 
The problem with frassing this is that you
(and all of us) will lose all these comments which have been posted here. If you agree that this string of comments is important to save, instead of frassing this, you can EDIT it and click on BROWSE to upload a new image when you have it. That way you get to keep all the comments and have your new image too!!

 
don´t frass
I agree. Don´t frass...It´s important to learn from the mistakes your making. I know I make mistake, we all do. But I´d like read back the comments and see why. I look forward to your aditional pictures too. I still think this is tristis for now.

 
Ok, thanks.
Thanks for your positive suggestions. I'll leave at genus level for now and will replace the images sometime (soon hopefully).

Moved
Moved from Beetles.

Brachyphnoea tristis
This can be moved to Brachyphnoea tristsis in Eumolpinae
see earlier comments

 
Brachypnoea tristis
further confimation on B. tristis from a key to the species of Alabama:
lateral margin of pronotum strongly rounded to base, pronotum widest at basal third..... B. tristis
also there is are pictures of Brachypnoea tristis and pucticollis from Cedar Creek on the net also indicating the species is tristis

Determination...
Ok, here is how I got to N. tristis (using Downie & Arnett).

Genus:
1. Front margin of thorax straight in front (not lobed beneath eyes).
2. Distinct margins on side of pronotum.
3. No grooves on head above eyes.
4. Side margins of pronotum regular/entire, not irregular/undulating. (If this was the case it would key to Colaspis or Rhabdopterus, and its definitely not either of those, being too small for one thing.)

This gets to either Nodonta or Spintherophyta. Nodonta has a marginal line along the base of the pronotum, has antennomere 3 longer than 2, and antennomere 6 shorter than 5 or 7, all of which agree with this specimen. My only concern is that Nodonta doesn't have the last 5 antennomeres "abruptly widened" while Spintherophyta does. This specimen's has the outer ones wider but I'm not so sure they are "abruptly" wider. The illustration of Nodonta in Downie and Arnett has similar antennae to the specimen. I think they mean that it is abruptly wider in the apical half of the antennomere. So I'm pretty sure its Nodonta, although I could be wrong (not having a Spintherophyta handy to look at).

4 species of Nodonta are listed for northeastern US.
1) N. clypealis has a "markedly constricted clypeus between antennae." I don't see this character.
2) N. puncticollis has "punctures of pronotum substrigose" and oblong body shape. Pronotal punctures seem normal and the size range (3.5 to 4.2 mm) is kinda big (its only 3 mm).
3) N. convexa has "metasternum coarsely punctate on sides." Definitely not this. Sides are impunctate.
4) N. tristis. Size 3 to 4 mm, black legs, elytral punctures tending to be in rows, outer antennomeres blackish, and being listed as a common species swept from "various herbs and shrubs." Seems to be a match.

Sorry this is long-winded! Actually I found an online key here while writing this and the pronotal shape matches N. tristis, so now I am pretty sure I got the ID right.

 
Thanks ...
Thank you for the insight. On the other picture the second antennal segment ¨seems´ rather thick/big. This is typical for Spintherophyta. This was my main doubt. But the picture is rather blurred. If the third is larger than the second there is no problem. These guys are difficult to identify anyways.
Nodonta is called Brachyphnoea now by the way:
so Brachyphnoea tristis

Eumolpinae
If it is Nodonta tristis this would be the first picture of a species of Nodonta on the internet. It seems a bit messy with Nodonta, Nodonota and Brachyphnoea all being possible names for the genus. I think the genusname should be Brachyphnoea. What made you come to this id. Can you exclude some other Eumolpinae genera like Spintherophyta??

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.