Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Interested in a 2022 BugGuide gathering in New Mexico?

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

National Moth Week 2020 photos of insects and people.

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

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

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Previous events

Tragidion - Tragidion densiventre - male

Tragidion - Tragidion densiventre - Male
Lower Madera Canyon grassland, Pima County, Arizona, USA
September 20, 2007
Light colored female with banded antennae


This should be...
...Tragidion densiventre.

Tragidion annulatum
This is a male specimen, not a female. The male is the paler of the two and has the annulate antennal segments. I've seen this species many times in lower Madera Canyon.

it seems to me a nice T. peninsulare Schaeffer 1908.
Type (male) at:

If I read the source correctl
If I read the source correctly annulatum was the original name and is still used for the Southwest population, whereas peninsulare is a later split-off for the California and Baja populations. In the Specimen photo of the source the label stil shows 'annulatum var. peninsularis'. Wouldn't that put our AZ specimen into the annulatus group?

I've been following M&H [pg 153] for the latest nomenclature.

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.