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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Longhorn and Leaf Beetles (Chrysomeloidea) » Longhorn Beetles (Cerambycidae) » Cerambycinae » Trachyderini » Trachyderina » Tragidion » Tragidion coquus
Photo#1299571
beetle with long horns - Tragidion coquus - female
Copyright © 2016 Steven Mlodinow

beetle with long horns - Tragidion coquus - Female
Brett Gray Ranch, TNC, Lincoln County, Colorado, USA
September 21, 2016
In riparian strip surrounded by shortgrass prairie. This doesn't look like a flower longhorn to me, but I could easily be wrong. It was rather large, somewhere in the 15-30 mm range (I know, sorry, not very precise - but most flower longhorns I've seen in CO have been distinctly smaller than this beast)
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Contributed by Steven Mlodinow on 1 October, 2016 - 8:28pm
Last updated 2 October, 2016 - 3:25pm

Moved
Moved from Tragidion.
… Steven Mlodinow, 2 October, 2016 - 3:25pm login or register to post comments

Moved, Tragidion sp. (coquus?)
Moved from ID Request.
… Blaine Mathison, 1 October, 2016 - 9:28pm login or register to post comments

 
Tragidion
T coquus would seem the only choice. It is the only one that would occur in e. CO (see https://beetlesinthebush.wordpress.com/2008/10/23/new-species-and-a-review-of-the-genus-tragidion/) and one of two species in CO. The other is T auripenne, which seems limited to the 4-Corners area. T armatum comes close to the s. CO near Trinidad and Walsenberg along the eastern edge of the Rockies (Swift and Ray 2008; accessible at https://www.researchgate.net/publication/277142426_A_review_of_the_genus_Tragidion_Audinet-Serville_1834_Coleoptera_Cerambycidae_Cerambycinae_Trachyderini)

T auripenne has antennae annulated with orange. Therefore, this species is not auripenne (same is true for T densiventre as well). Male armatum have orange rings on the antennae as well, but they are all dark in females (and this individual is a female.) Finally, using the key in Swift and Ray landed me at T. coquus.
… Steven Mlodinow, 2 October, 2016 - 3:24pm login or register to post comments

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