id? - Xenochodaeus ulkei

HomeGuideID RequestRecentFrassForumsDonateHelp

Clickable Guide

Calendar

Upcoming Events

Registration is open for the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2023

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Previous events

TaxonomyBrowseInfoImagesLinksBooksData

Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Scarabaeoidea » Sand-loving Scarab Beetles (Ochodaeidae) » Xenochodaeus » Xenochodaeus ulkei

Photo#1495960

Copyright © 2018 Glen Forister

id? - Xenochodaeus ulkei

Lund, White Pine County, Nevada, USA
October 3, 2017
Size: 6 mm

Ochodaeidae isn't listed in NV in BG yet.

Danielle C. Miles collector.
light trap set 37 mi SE Lund, White Pine Co., NV on White Pine Co. Rd. 45, possibly in Lincoln Co..
GPS = N 38 35.727' W 114 46.918’. or 38.595450, -114.781967.
This trap had been set in sage brush habitat neighboring a post-treatment ecotone site. Our post site for that region is in South Patterson Pass by the Mount Grafton Wilderness area.

-----Important characters.
Family characters: Pectinate mesotibia spur (not sig flattened and dilated).
9 or 10 segmented antennae.
Showing elytra striae (lines) which may be present or not.

Generic characters:
Metatibial spurs simple (not crenulate or pectinate).
10 segmented antennae.
Dorsal view of propygidum with distal margin modified into transverse midline (not turbicles) ridge that interlocks with distal elytral margin.
Sutural angle of elytra not dentiform (small tooth pointing apically).
Study: GBBL PJ, sample 76_F.

Images of this individual: tag all

tag · login or register to post comments

Contributed by Glen Forister on 28 February, 2018 - 12:40pm
Last updated 22 November, 2023 - 11:57am

Moved

Moved from Xenochodaeus.

… Glen Forister, 4 December, 2019 - 12:04pm

Moved

Moved from Neochodaeus.

… MJ Paulsen, 6 November, 2019 - 4:49pm

Thanks. I now see your pap

Thanks.
I now see your paper that I missed 2 years ago which had great pictures of the details and the new genera.

… Glen Forister, 7 November, 2019 - 11:27am

check the mentum

White Pine county is within the distribution of X. ulkei. If it is that species the mentum will project strongly downward, easily visible in a side view. The range of X. simplex almost reaches White Pine county. In this species the mentum is not produced but instead is flat and in the same plane as the underside of the head. A third species, X. luscinus almost reaches this far south, but has very small eyes and the images preclude it being that species.

… MJ Paulsen, 8 November, 2019 - 1:30pm

Added views - mentum & hind femur

Consistent with X. ulkei.

I have added another view of the mentum (couldn't get a good cross view due to lack of depth of field). This shows the mentum reflecting the light back showing the submentum pointing towards ventral and at almost right angle with the mentum.

Referencing your paper, the ventral distal end of the femur is subdentate (small lobe) which is also consistent with X. ulkei.

If you agree you can move, or I'll be happy to do so.
Thanks

… Glen Forister, 8 November, 2019 - 4:42pm

Moved

Moved from Sand-loving Scarab Beetles.

… Glen Forister, 13 March, 2018 - 4:32pm

Moved for expert review to Ochodaeidae

You have everything imaged except the pygidium, which may be needed to go further (although specialists in the group can prob ID as is).

Moved from ID Request.

… Blaine Mathison, 28 February, 2018 - 1:11pm

pygidium needed supplied

I've supplied the pygidium and propygidium (showing the longitudinal lines) which takes me to Neochodaeus I believe. Correct?

… Glen Forister, 1 March, 2018 - 3:34pm

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2024 Iowa State University, unless otherwise noted.

Bugguide is hosted by:

Printer Friendly Version