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

BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.

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

Previous events


TaxonomyBrowseInfoImagesLinksBooksData
Photo#41125
Puffball, not pill scarab - Caenocara

Puffball, not pill scarab - Caenocara
Hudson, Hillsborough County, New Hampshire, USA
Size: 2 mm
Phillip thought (maybe hoped) this was a pill scarab, though it was hard to see detail in the group shot from my lightbulb collection. Anyway I shot closeups to find out, and it's clearly a puffball beetle.

Images of this individual: tag all
Puffball, not pill scarab - Caenocara Puffball, not pill scarab - Caenocara Puffball, not pill scarab - Caenocara

Un-frassed
I've got some shots here that are useful for pointing out features, so I'm re-directing them to genus page.

I had hoped
It was definitely a long shot, nice shots though.

Pill Scarabs (Ceratocanthidae) were only recently found as far north as Canada - so maybe NH? I occasionally see these at light, but more often under bark of pretty rotten deciduous trees. They roll up so compactly that they appear to be only part of a beetle. Larva reportedly in Passalid frass.

Howden, H.F. 1992. First Canadian record of the subfamily Ceratocanthinae
(Coleoptera: Scarabaeidae). The Coleopterists Bulletin 46(3): 273.

 
I guess pill scarab larvae eat other stuff too,
otherwise they wouldn't get too far north of a passalid population.

 
of course
They appear to require quite decomposed wood - Passalid frass would be a good source. Most that I've found were in fairly rotten logs or branches that practically fall apart in your hands.

 
Are they in the 2mm range?
I'll keep a sharp eye out for black pills in beetle frass and pulpy wood.

btw, Margaret Thayer informs me Brachy*pteridae is the better name for Kater*idae. I want to see what Andy Cline says since he studies them. The Russians seem sold on Kater*idae.

 
yes, when curled up
They'd appear that small in the field.

On Kater*dae - It appears that the ICZN has ruled on this, (haven't read that opinion) which usually settles the matter - see synonyms section for specifics.

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