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

TaxonomyBrowseInfoImagesLinksBooksData
Photo#401745
Firewood Beetle - Utobium marmoratum

Firewood Beetle - Utobium marmoratum
In Westwood - elevation 5100ft, Lassen County, California, USA
April 11, 2010
Size: 6 mm
Found in house. At first thought it might be a carpet beetle. But after viewing images on laptop I think it is not a carpet beetle. I found another on May 25 on some lodgepole firewood that I brought indoors. In browsing a bit on the Guide I think it might be a leaf beetle - Tribe Adoxini. But I really am not sure. My thanks to our beetle experts for ID help!

Images of this individual: tag all
Firewood Beetle - Utobium marmoratum Firewood Beetle - Utobium marmoratum

Moved
Moved from Utobium. Have keyed it.

 
Thank you!
Many thanks Boris for your time spent ID'ing this Utobium beetle.

 
wunderbar
thanks again!

No mutant
. . . but a typical representative of its genus. I think this is the western species U.marmoratum, but I have to check.

Enlargement of some funicular antennal segments occurs in several genera of Anobiidae (in different subfamilies!). One may think there already is a tendency to this development hidden in the genes of ancient stock. In the genus Ernobius, one finds the same segments often to be a trifle longer than the others.

 
very enlightening
it is stunning though that neither the weird antenna, nor the habitus are illustrated in Am.Beetles(1) -- among 15 antennal & 36 habitus Abb.!!! so i looked for a while, then decided that if such a thing existed, it would certainly be there -- and called Boris to the rescue...
The California beetle database lists U. griseum & U. marmoratum only

Moved
Moved from Ernobiinae.

 
ha! thanks, Jim and Boris -- another genus off the wish list

very funny -- i mean it: those antennae are toatlly made up...
Moved from ID Request.

 
Those funny antennae!
Yeah, I am not real good with these little beetles, but those antennae were my first clue that it was not a carpet beetle!

 
they look 100% anobiid, but in a mutant kinda way
later, Jim

Hm-m-m.
Clearly in the Anobiidae family, but after that I have no idea.

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