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

Calendar
Upcoming Events

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 BugGuide 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.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama


TaxonomyBrowseInfoImagesLinksBooksData
Photo#1961848
Morychus oblongus

Morychus oblongus
Sevenmile Creek, 8 kilometers northwest of Helena, Lewis and Clark County, Montana, USA
April 21, 2021
Size: 5.5 mm
Slowly crawling, metallic green beetle, crawling on the ground under a water-rounded quartzite boulder of ca 50 cm diameter on mostly level, old stream terrace burned in last September's fire, with regrowing clump of grass leaves ca 10 cm long in the vicinity. When I picked it up, it tucked in its legs and 'played dead.'
Elevation ca 4000 feet. Disturbed, shrubby riparian corridor on stream restoration site within a patchwork of native and non-native grassland.

Keyed to Morychus in Arnett et al. 2002 and to species based on Johnson's key to the family (Project Byrrhus).

Images of this individual: tag all
Morychus oblongus Morychus oblongus Morychus oblongus Morychus oblongus Morychus oblongus Morychus oblongus Morychus oblongus

Moved
Moved from Pill Beetles.

Moved
Moved from Cytilus mimicus.

 
Originally misidentified as Cytilus mimicus
-which seemed improbable based on the paucity of reports for this species. Reviewed my identification and arrived at Morychus oblongus, which matches very well with existing Bugguide images. I had gone astray in the key by disregarding the depressions in the first sternite into which the femora fit.

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