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

See Moth submissions from National Moth Week 2023

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

Photos of 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

Previous events


Species Calamosternus granarius

Aphodius granarius (Linnaeus) - Calamosternus granarius Aphodiine Dung Beetle? - Calamosternus granarius Scarab: Aphodius granarius? - Calamosternus granarius beetle - Calamosternus granarius Possible Horned Passalus Beetle (Odontotaenius disjunctus) - Calamosternus granarius Aphodius... - Calamosternus granarius Aphodius... - Calamosternus granarius Ataenius sp? - Calamosternus granarius
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
Superfamily Scarabaeoidea
Family Scarabaeidae (Scarab Beetles)
Subfamily Aphodiinae (Aphodiine Dung Beetles)
Tribe Aphodiini
Genus Calamosternus
Species granarius (Calamosternus granarius)
Explanation of Names
Orig. Comb: Scarabaeus granarius Linnaeus, 1767
3-5 mm (1)
4–6 mm - Smith & Skelley, 2007

A highly variable species as indicated by the large synonymy.
Males have broad pronotum and smoother clypeus;
females have narrower pronotum and rugose clypeus. - Smith & Skelley, 2007

Most common misidentification is Calamosternus granarius and Oscarinus rusicola. Both are very common, but can be distinguished easily by the shape of the scutellum, among other characters. Pentagon vs. triangle, respectively.
Cosmopolitan, one of the most widely dist. sp., now found in every part of the globe - Map (1)(2), mostly N. Amer. and Europe
common wherever cows and other European farm animals are found - Smith & Skelley, 2007
One of the most common sp. in cow dung in the ne. US. (1)
Highly polyphagous, feeding on all kinds of dung, debris, decaying vegetables, compost, carrion, etc. (1)
Type Locality: "Europa"
Internet References
University of Nebraska - Andrew Smith and Paul Skelley, 2007
Works Cited
1.The Scarab Beetles of Florida
Robert Woodruff. 1973. Florida Department of Agriculture and Consumer Services.
2.Global Biodiversity Information Facility (GBIF)