Elaphropus - Tachyura dolosa

Elaphropus dolosus confirmed

based on my physical examination and good comparison with a sexual set of this species gifted to me from Robert Davidson (determiner). Besides the expected uniform brownish-yellow dorsum, the elytra are proportionately elongate when compared to those of E. anceps. Thanks Owen for this exercise!

… Peter W. Messer, 11 July, 2021 - 11:53am

I'm expecting a "teneral anceps" determination,

since this doesn't look narrow and flat enough for dolosus, in my opinion. Interested to see what the verdict is.

… Curt Harden, 25 April, 2020 - 4:32pm

I did not receive this specimen from Owen.

His batch yielded one Elaphropus anceps (mature dark form) and one typical Elaphropus incurvus.

… Peter W. Messer, 5 May, 2020 - 9:32pm

Caught after sending

This is because I captured this specimen after sending the first batch. It will be in the next shipment. :)

… Owen Strickland, 5 May, 2020 - 9:43pm

Great -

because Curt really wants to know the name! :)

… Peter W. Messer, 5 May, 2020 - 9:52pm

Yes, it's difficult for me to distinguish by image alone.

My synoptic set finally has good examples of E. dolosus thanks to gifts from Bob Davidson before his recent retirement. It will be interesting to compare specimens under scope.

… Peter W. Messer, 25 April, 2020 - 5:44pm

Moved

Moved from subgenus Barytachys.

… Peter W. Messer, 13 April, 2020 - 1:42pm

Elaphropus dolosus is best fit for now.

At this photographic distance the best signs are uniformly yellowish-brown color & elongated elytra. Owen, are you able to send me an example of this species which has so far eluded my reference collection? Plus I would be able to confirm the identity of this post. Nice addition to BugGuide.

p.s. there is a chance that this could turn out to be E. anceps - light teneral phase of which I have many such examples. However, the elytra in the latter species appear relatively shorter than those in the image.

… Peter W. Messer, 13 April, 2020 - 1:40pm

Awesome,

It is already in alcohol for you. Will send in the next shipment! Would love to add a species to your reference collection.

… Owen Strickland, 13 April, 2020 - 2:05pm