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Family Hydrophilidae - Water Scavenger Beetles

Water Scavenger Beetle - Cymbiodyta Tropisternus lateralis marginatus - Tropisternus lateralis Unknown large water beetle. - Hydrophilus triangularis Water Scavenger Beetle - Tropisternus collaris Hydrophilidae - Hydrobius fuscipes Small Oval Hydrophilid ? Tectosternum naviculare Tropisternus lateralis? - Tropisternus lateralis
Classification
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 Hydrophiloidea (Water Scavenger and Clown Beetles)
Family Hydrophilidae (Water Scavenger Beetles)
Synonyms and other taxonomic changes
incl. Georyssidae, Helophoridae, Hydrochidae, Spercheidae, Sphaeridiidae
Explanation of Names
Hydrophilidae Latreille 1802
Numbers
~260 spp. in 35 genera in our area(1), ~3400 spp. in ~200 genera worldwide(2)
Overview of our faunaadapted from(3); taxa not yet in the guide are marked (*)
Family Hydrophilidae
Subfamily Hydrophilinae
Tribe Chaetarthriini Chaetarthria
Tribe Laccobiini Laccobius
Subfamily Sphaeridiinae
Tribe *Omicrini *Omicrus
Tribe Sphaeridiini Sphaeridium
Size
1-40 mm(1) (exotic spp. up to 50 mm)
Identification
Aquatic forms may superficially resemble Dysticidae but can be easily distinguished by antennae. Many have keeled sterna. The adults come up for air head first, and move hind legs alternately (Dysticidae come up for air tail first and move hind legs together, like oars)
keys in(4)(5)(6)(7)(8)
Range
Worldwide
Habitat
Mostly aquatic; Sphaeridiinae are terrestrial (in dung, compost, carrion, and other decaying organic matter). Habitats discussed in detail in(10)
Food
Some adults are scavengers and feed on dead plant and animal material, others are predatory. Larvae often predatory. Some terrestrial species feed on various decaying matter and associated maggots.
See Also
Internet References
(11)
Works Cited
1.American Beetles, Volume I: Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia
Arnett, R.H., Jr., and M. C. Thomas. (eds.). 2000. CRC Press LLC, Boca Raton, FL.
2.Order Coleoptera Linnaeus, 1758. In: Zhang Z.-Q. (ed.) Animal biodiversity: An outline of higher-level classification...
Slipinski S.A., Leschen R.A.B., Lawrence J.F. 2011. Zootaxa 3148: 203–208.
3.World Catalogue of Insects, Vol. 2: Hydrophiloidea (Coleoptera).
Hansen, M. 1999. Apollo Books, Stenstrup, Denmark. 416 pp.
4.Review of the Family Hydrophilidae of Canada and Alaska
Ales Smetana. 1988. Entomological Society of Canada.
5.Clifford H.F. (1991) Aquatic invertebrates of Alberta
6.Water Beetles of South Carolina
Janet Ciegler. 2003. Clemson University.
7.Aquatic Insects of North America
R. W. Merritt, K. W. Cummins, M.B. Berg. 2008. Kendall/Hunt.
8.The Water Beetles of Florida
Epler J.H. 2010. Florida Department of Environmental Protection. Tallahassee. 414 pp.
9.Florida Association of Benthologists website
10.Short A.E.Z. (2007) Hydrophiloidea.org
11.MacGown J.A. (2010) Aquatic Hydrophilidae of Mississippi