Tumbling flower beetle - Mordellochroa scapularis - BugGuide.Net

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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Tenebrionoidea » Tumbling Flower Beetles (Mordellidae) » Mordellistenini » Mordellochroa » Mordellochroa scapularis

Photo#733678

Copyright © 2012 Richard Migneault

Tumbling flower beetle - Mordellochroa scapularis

Edmundston, Madawaska County, New Brunswick, Canada
May 30, 2012
Size: 4mm

Mordellochroa scapularis?

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Tumbling flower beetle - Mordellochroa scapularis

Tumbling flower beetle - Mordellochroa scapularis

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Contributed by Richard Migneault on 28 December, 2012 - 8:13am
Last updated 28 December, 2012 - 9:53pm

Mordellochroa scapularis (Say)

Correct, this is Mordellochroa scapularis (Say).

… Christopher Majka, 21 January, 2013 - 12:18pm

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Moved

Moved from Mordellistenini.

… Tim Moyer, 28 December, 2012 - 9:53pm

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lighten

This could be M. frosti Leljeblad, but we really need to see the hind leg ridges. If possible, please re-shoot this view a stop or 2 lighter (slightly washed out is less pleasing to view, but better for determination). A view of the left side would also be helpful (the tumblers sometimes have different ridge counts on opposite legs).

But I'm not sure we can rule out M. scapularis either. It covers this location too, and we have several that appear similar to this coloration (unless they are frosti too!)

… Tim Moyer, 28 December, 2012 - 3:42pm

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I have posted a closeup photo

I have posted a closeup photo of both hind legs ridges, do you find the information you need to id..

… Richard Migneault, 28 December, 2012 - 6:18pm

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M. scapularis

from your excellent image of both legs, I read the ridges as 2,2,1 (or 2?), although they certainly are short, almost "rudimentary". Liljeblad doesn't mention anything about rudimentary ridges for M. frosti (1,1,0), and while the pronotum basal coloration seems to agree with M. frosti, the humeral spot would be more atypical. So unless anyone believes otherwise, I'd say this one is certainly M. scapularis.

Thanks again for the extra image detail!

… Tim Moyer, 28 December, 2012 - 9:52pm

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Thanks so much for this id...

Thanks so much for this id...

… Richard Migneault, 29 December, 2012 - 6:31am

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the colour scheme rules M. scapularis out, i believe

intriguing anyway...
Moved from Tumbling Flower Beetles.

… v belov, 28 December, 2012 - 10:52am

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