Minute Bog BeetlesDavid R. Maddison
- Sphaerius acaroides
- Sphaerius africanus
- Sphaerius alticola
- Sphaerius coenensis
- Sphaerius coomani
- Sphaerius cribratus
- Sphaerius favosus
- Sphaerius gustavlohsei
- Sphaerius hispanicus
- Sphaerius humicola
- Sphaerius laeviventris
- Sphaerius madecassus
- Sphaerius politus
- Sphaerius obsoletus
- Sphaerius ovensensis
- Sphaerius papulosus
- Sphaerius perlaevis
- Sphaerius scutellaris
- Sphaerius silvicola
- Sphaerius spississimus
- Sphaerius tesselatus
- Sphaerius texanus
- Sphaerius tropicus
Sphaerius. © 2007 David R. Maddison
Adults of one species occur on the banks of the Santa Cruz River in Tumacocori, in Southern Arizona. They are found crawling on damp sandy soil, in shady areas or under a thin layer of litter, from 0.2-1.0 meters from the river shore. They are most abundant where there is a thin layer of dark green "slime" (presumably a small alga) on the surface.
A sample of this soil with slime was taken back to the lab, and watered lightly every few weeks. After about 6 months, larval Sphaerius appeared on the surface. They were most common on those pieces of sand that were covered with the greenish slime; the larvae crawled in the thin layer of water that covered that slime, as shown in the picture, below:
Beutel, R. G. and G. B. Raffaini. 2003. First record of Sphaeriusidae for Argentina. Koleopterologische Rundschau 73:1-6.
Britton, E. B. 1966. On the Larva of Sphaerius and systematic position of the Sphaeriidae (Coleoptera). Australian Journal of Zoology, 14, 1193-1198.
Endrödy-Younga, S. 1997. Microsporidae (Coleoptera: Myxophaga), a new family for the African continent. Annals of the Transvaal Museum 36:309-311.
International Committee of Zoological Nomenclature. 2000. Opinion 1957, Sphaerius Waltl, 1838 (Insecta, Coleoptera): conserved; and Sphaeriidae Erichson, 1845 (Coleoptera): spelling emended to Sphaeriusidae, so removing the homonymy with Sphaeriidae Deshayes, 1854 (1820) (Mollusca, Bivalvia). Bulletin of Zoological Nomenclature 57(3):182-184.
Jäch, M. A. 1999. Case 3052. Sphaerius Waltl, 1838 and Sphaeriusidae Erichson, 1845 (Insecta, Coleoptera): proposed conservation by the partial revocation of Opinion 1331. Bulletin of Zoological Nomenclature 56(2):117-120.
Lawrence, J. F. and H. Reichardt. 1991. Microsporidae (Myxophaga). Pages 302-303 in: Immature Insects. Vol. 2. F.W. Stehr (ed.) Kendall/Hunt Publishing Co., Dubuque, Iowa.
Löbl, I. 1995. New species of terrestrial Microsporus from the Himalaya (Coleoptera: Microsporidae). Entomologische Blätter 91:129-138.
Reichardt, H. 1973. A critical study of the suborder Myxophaga, with a taxonomic revision of the Brazilian Torridincolidae and Hydroscaphidae (Coleoptera). Arquivos de Zoologia, S. Paulo 24(2):73-162.
David R. Maddison
Oregon State University
Page copyright © 1995 David R. Maddison
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Maddison, David R. 1995. Sphaeriusidae. Minute Bog Beetles. Version 01 January 1995 (under construction). http://tolweb.org/Sphaeriusidae/9053/1995.01.01 in The Tree of Life Web Project, http://tolweb.org/