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Acrossus Mulsant 1842
Acrossus Mulsant 1842: 164.

Acrossus rubripennis (Horn)
Photo by P. Skelley.
Family........... Subfamily......


Aphodiinae Overview

Aphodiinae Key

Aphodiini Key

Type species. Scarabaeus luridus Fabricius 1775: 19, by subsequent designation.


Diagnosis. Body length 6.2-13.0 mm, flattened, dark brown to black with variably colored elytra. Head broad, nearly semicircular, flat, smooth. Clypeal margin entire, lacking teeth. Lateral pronotal margin thickened, not explanate.


Distribution. Palearctic, eastern North America, introduced in Argentina (?).


Composition. Worldwide, Acrossus contains approximately 43 species, only two are present in the New World.

Acrossus rubripennis (Horn 1870: 132) [Aphodius], E-USA.
Acrossus rufipes (Linnaeus 1758: 353) [Scarabaeus], Paleartic, E-USA and Argentina (introduced).
                  = Aphodius boum Gistel 1857: 596.
                  = Aphodius capicola Harold 1862: 381.
                  = Scarabaeus capitatus Degeer 1774: 263.
                  = Aphodius juvenilis Mulsant 1842: 272.
                  = ? Aphodius matsuzawai Yawata 1943: 7.
                  = Aphodius muticus Stephens 1830: 200.
                  = Scarabaeus oblongus Scopoli 1763: 8.
                  = Aphodius rufotestaceus Dalla Torre 1879: 109.


Life History. They may be surface generalists in forested situations. The nesting behavior for A. rufipes is discussed by Klemperer (1980).


Larvae. The larvae for A. rufipes has been described by Emden (1941).


Emden, F. I. Van. 1941. Larvae of British beetles. 2. A key to the British lamellicorn larvae. Entomologists Monthly Magazine 77: 117-127, 181-192.
Gordon, R. D., and P. E. Skelley. 2007. A monograph of the Aphodiini inhabiting the United States and Canada (Coleoptera: Scarabaeidae: Aphodiinae). Memoirs of the American Entomological Institute 79: 580 pp.
Klemperer, H. G. 1980. Kleptoparasitic behaviour of Aphodius rufipes (L.) larvae in nests of Geotrupes spiniger Marsh (Coleoptera, Scarabaeidae). Ecological Entomology 5: 143‑151.

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Author: Paul Skelley

Generated on: 28/APR/08.....Last modified: 28/APR/08
University of Nebraska State Museum - Division of Entomology