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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

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Species Calamosternus granarius

Aphodius? - Calamosternus granarius tiny black scarab beetle - Calamosternus granarius Scarabaeidae - ? - Calamosternus granarius Dung Beetle? - Calamosternus granarius Aphodiine scarab 4 - Calamosternus granarius Dung Beetle - Calamosternus granarius Scarabaeidae: Ataenius platensis? - Calamosternus granarius Ata*enius sp? - Calamosternus granarius
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
Superfamily Scarabaeoidea (Scarab, Stag and Bess Beetles)
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. (1)
One of the most common sp. in cow dung in the ne. US. (1)
common wherever cows and other European farm animals are found - Smith & Skelley, 2007
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.