Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Interactive image map to choose major taxa 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

National Moth Week was July 19-27, and the Summer 2025 gathering in Louisiana, July 19-27

Photos of insects and people from the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2024

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


Genus Mezium

Representative Images

Brown/black bug - Mezium americanum Northern Spider Beetle - Mezium affine beetle? that looks like a tiny eggplant - Mezium affine Shiny Spider Beetle - Mezium affine Shiny Spider Beetle - Mezium affine Mezium affine Mezium affine Mezium species? - Mezium

Classification

Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
Superfamily Bostrichoidea
Family Ptinidae (Death-watch and Spider Beetles)
Subfamily Ptininae (Spider Beetles)
Tribe Meziini
Genus Mezium

Explanation of Names

Mezium Curtis 1828

Numbers

2 species in NA; only M. affine in Canada(1), a dozen total

Size

3-4 mm

Identification

Elytra fused, globular, very glabrous; unlike in Gibbium, pronotum with furry pubescence and ridges

Range

Almost cosmopolitan nowadays, but probably African in origin. In Canada, NS to SK; BC(1)

Works Cited

1.Beetles associated with stored products in Canada: An identification guide
Bousquet Y. 1990. Research Branch Agriculture Canada, Publication 1837.