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Small Black and Orange Beetle - Idolus bigeminatus

Small Black and Orange Beetle - Idolus bigeminatus
Creighton, Northern, Saskatchewan, Canada
May 27, 2011
Size: 5mm
This beetle was on a poplar sapling. It can fly quite good. Ideas??

Images of this individual: tag all
Small Black and Orange Beetle - Idolus bigeminatus Small Black and Orange Beetle - Idolus bigeminatus

Working on my SE project has given me a better understanding of this genus in the East and am now more confident with this ID.

Moved from Idolus.

cool. must be bigeminatus though

Agriotella sp. --det. P.J. Johnson
his comment: "There are no evident lobes on the visible tarsi, tarsomeres 3 and 4 are proportionately long, hind angle carinae are low in profile, the specimen is from northern SK, the pronotal lateral margins are subparallel, and the antennomeres are narrowly serrate."
[nice find: i see no SK records in the 1991 Canada checklist; the closest are A. bigeminata in MB and A. occidentalis in AB. =v=]
Moved from Elaterinae.

Paul's follow-up:
"I do not have any published records from SK for either species. Another problem: the Palearctic Agriotella are now in Idolus. Most likely our species should also be transferred. In fact, A. bigeminata may be the Nearctic sister species to Idolus picipennis."

messy... pix of this sp. are found in the guide in 2 tribes
ID'd as Anchastus binus and Agriotella bigeminata...

Moved from ID Request.

A vs A
I am not familiar with Agriotella bigeminata. The two genera should be easy to separate, but it requires looking at the tarsi for the presence (Anchastus) or absence (Agriotella) of pads. I am leaning towards Anchastus myself.

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