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Photo#712357
Cyclotrachelus constrictus (Say) - Cyclotrachelus constrictus - female

Cyclotrachelus constrictus (Say) - Cyclotrachelus constrictus - Female
Dick Nichols District Park, sw. Austin, Travis County, Texas, USA
October 4, 2012
Det. P. W. Messer, 2014 (based on microscopic re-examination of this specimen
Spmn in the PWMC

coll. at UV light

Images of this individual: tag all
Cyclotrachelus constrictus (Say) - Cyclotrachelus constrictus - female Cyclotrachelus constrictus (Say) - Cyclotrachelus constrictus

Back to Cyclotrachelus substriatus
based finally on convincing C. constrictus that I examined from AZ that is clearly different from the specimen posted here. Sorry for yet another switch.

moved to Cyclotrachelus constrictus (Say) = 3000 apologies
Mike, I changed this page from the previous assigned name "Cyclotrachelus substriatus" to this one based on new comparative insights gained from additional material.

Moved

Cyclotrachelus (Evarthrus) constrictus (Say)
This reply updated 4/30/2014
Cyclotrachelus (Evarthrus) constrictus (Say)
based on my microscopic examination of this female specimen which is now a photo-voucher in the P.W.Messer collection. Thanks Mike.

You posted two identical set of images under BG # 712357 & 712358. You mailed me two such specimens from same location but with two different dates: Oct 2 (ABL ~ 11 mm) and Oct 4 (ABL ~ 13 mm).


Note: This species separates from the few juxtapositional species in Freitag (1969) by the following combination:

1) Prontum strongly constricted at base.
2) So-called "umbilicate" punctures along anterolateral border of shoulder are not surrounded by prominent elevated ridges.
3) Elytral apex moderately sinuate.
4) Without prominent knob along border of last abdominal sternite.
5) Body length not more than 12.8 mm.

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