Spercheus

Life-forms

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Endopterygota
Superordo: Coleopterida
Ordo: Coleoptera
Subordo: Polyphaga
Infraordo: Staphyliniformia
Superfamilia: Hydrophiloidea

Familia: Spercheidae
Genus: Spercheus
Species: S. babylonicus – S. belli – S. cerisyi – S. emarginatus – S. halophilus – S. interruptus – S. platycephalus – S. senegalensis – S. wattsi
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Name

Spercheus Kugelann, 1798
References

Archangelsky, M. 2001: A new Neotropical species of Spercheus Kugelann, and its larval stages (Coleoptera, Hydrophiloidea: Spercheidae). Studies on Neotropical fauna and environment, 36: 199–204. DOI: 10.1076/snfe.36.3.199.2128 PDF
Hebauer, F. 1990: Drei neue Arten der Gattung Spercheus Kugelann aus der Orientalischen Region (Coleoptera, Spercheidae). Acta coleopterologica, 6(1): 1–8. [not seen]
Hebauer, F. 1997: Revision der Arten der Familie Spercheidae Erichson, 1837 (Coleoptera, Hydrophiloidea). Entomologische Blätter, 93(1): 9–42. PDF
Hebauer, F. 1999: Spercheus wattsi, sp.n.- a second Australian species of the genus (Coleoptera, Hydrophiloidea). Acta coleopterologica, 15(2): 5–6. PDF
Jäch, M.A. 2010: Spercheidae (Coleoptera). Pp. 247-250 in: Jäch, M.A. & Balke, M. (eds.): Water beetles of New Caledonia (part 1). Monographs on Coleoptera, 3. ISSN: 1027-8869

Links

ION
Nomenclator Zoologicus
Atlas of Spercheidae of Russia

Vernacular names
čeština: Vodomilek

Spercheus is a genus of aquatic beetles which are placed in a family of their own, Spercheidae. About 20 species are known from around the world, with the majority being from the Oriental and Afrotropical Realms.
Larva of Spercheus emarginatus

These beetles are usually less than half a centimeter long and their larvae are found in shallow still water with rich vegetation. They do not swim but hang below the water surface and filter-feed on algae. The larvae are triangular in shape, the outline resembling that of antlion larvae. Larvae of many species are also filter feeders on plant matter but some Australian species feed on worms, snails , and other small invertebrates. Females build a silken-egg case which they attach to their mid-tibiae and held by the hind legs, carried below the abdomen.[1] These beetles were formerly placed in the family Hydrophilidae but are distinctive.[2] The front of the head is notched and the 7–9 segmented antenna has the terminal 3–4 segments club like and an enlarged fourth segment. The elytra are very convex and one or two abdominal segments extend beyond the apex. They have 5 tarsal segments on all legs.[3][4]

Spercheus belli Champion, 1919
Spercheus belli babylonicus Hebauer, 1997
Spercheus burgeoni Orchymont, 1929
Spercheus cerisyi Guérin Méneville, 1842
Spercheus crenulatus Fairmaire, 1893
Spercheus emarginatus (Schaller, 1783)
Spercheus fimbriicollis Bruch, 1915
Spercheus gerardi Orchymont, 1929
Spercheus halophilus Archangelsky, 2001
Spercheus hanseni Hebauer, 1990
Spercheus hovanus Fairmaire, 1903
Spercheus humeralis Régimbart, 1906
Spercheus platycephalus MacLeay, 1825
Spercheus platycephalus interruptus Fairmaire, 1892
Spercheus senegalensis Castelnau, 1832
Spercheus siamensis Hebauer, 1990
Spercheus spangleri Hebauer, 1990
Spercheus stangli Schwarz & Barber, 1918
Spercheus stasimus Orchymont, 1937
Spercheus wattsi Hebauer, 1999

References

Archangelsky, Miguel (2001). "A new Neotropical species of Spercheus Kugelann, and its larval stages (Coleoptera, Hydrophiloidea: Spercheidae)". Studies on Neotropical Fauna and Environment. 36 (3): 199–204. doi:10.1076/snfe.36.3.199.2128. S2CID 84693791.
Archangelsky, Miguel (1998). "Phylogeny of Hydrophiloidea (Coleoptera: Staphyliniformia) using characters from adult and preimaginal stages". Systematic Entomology. 23: 9–24. doi:10.1046/j.1365-3113.1998.00039.x. S2CID 83521707.
Short, A. E. Z.; Fikáček (2013). "Molecular phylogeny, evolution and classification of the Hydrophilidae (Coleoptera)". Systematic Entomology. 38 (4): 723–752. doi:10.1111/syen.12024. S2CID 83050858.
Slipinski, Adam; Lawrence, John, eds. (2019). Australian Beetles Volume 2: Archostemata, Myxophaga, Adephaga, Polyphaga (part). CSIRO.