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Species Berosus peregrinus

Berosus peregrinus (Herbst) - Berosus peregrinus - female Hydrophilid #4 - Berosus peregrinus Hydrophilid #4 - Berosus peregrinus another Berosus - Berosus peregrinus another Berosus - Berosus peregrinus Berosus peregrinus - male beetle - Berosus peregrinus - male Hydrophilid - Berosus peregrinus - male
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)
No Taxon (Series Staphyliniformia)
Superfamily Hydrophiloidea (Water Scavenger and Clown Beetles)
Family Hydrophilidae (Water Scavenger Beetles)
Subfamily Hydrophilinae
Tribe Berosini
Genus Berosus
Species peregrinus (Berosus peregrinus)
Explanation of Names
Berosus peregrinus (Herbst 1797)
3.5-4.9 mm(1)
diagnostic characters include combination of:
relative small size (4 mm measured here),
dark head,
5th (last) visible abdominal sternum with apical emargination with a single tooth/point and
aedeagus with the median lobe narrow and pointed at the apex.
Per Tim Loh, 20.viii.2012

Each elytron with at most 6-7 spots that may be weakly defined or partially coalesced; eyes smaller [than B. pantherinus], width about 1/3 interocular distance; scutellum brown [vs. metallic black](1)
e. NA to AZ (QC-FL to ON-WI-AZ); Cuba(2)
See Also
The relatively faint 6-7 marks on each elytron and the smaller eyes will separate it from B. pantherinus with its 10-spotted elytron and larger eyes(1)
Internet References
Works Cited
1.The Water Beetles of Florida
Epler J.H. 2010. Florida Department of Environmental Protection. Tallahassee. 414 pp.
2.World Catalogue of Insects, Vol. 2: Hydrophiloidea (Coleoptera).
Hansen, M. 1999. Apollo Books, Stenstrup, Denmark. 416 pp.
3.Ziser S.W. (2008-2012) The aquatic invertebrates of Texas