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Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Ordo: Coleoptera
Subordo: Polyphaga
Infraordo: Staphyliniformia
Superfamilia: Staphylinoidea

Familia: Staphylinidae
Subfamilia: Megalopsidiinae
Genera (1): Megalopinus

Megalopsidiinae Leng, 1920: 98

Type genus: Megalopsidia Leng, 1918 [synonym of Megalopinus Eichelbaum, 1915]


Megalopsidiini Leng, 1920: 98 [original name]
Megalopini Erichson, 1839: 30 [preoccupied genus name, not Megalops Lacepède, 1803 [Pisces], not Megalops Rafinesque, 1815 [Pisces]; syn. of Megalopinus Eichelbaum, 1915]
Type genus: Megalops Erichson, 1839.
Aulacotrachelinae L. Benick, 1920: 1 [syn. of Megalopinus Eichelbaum, 1915; replacement name for Megalopinae Erichson, 1839 because of the homonymy of the type genus]
Type genus: Aulacotrachelus Benick, 1920.
Stylopodinae Blackwelder, 1943: 202
Type genus: Stylopodus Benick, 1917 [syn. of Megalopinus Eichelbaum, 1915; name proposed to replace Megalopinae Erichson, 1839 and Megalopsidiinae Leng, 1920 because of the synonymy of the type genus].
Megalopininae Puthz, 1967: 192 [unavailable family-group name, proposed after 1930 without description or bibliographic reference to such a description (Art. 13.1)]
Type genus: Megalopinus Eichelbaum, 1915.
Megalopininae Naomi, 1986: 344 [name proposed to replace Megalopinae Erichson, 1839 and Megalopsidiinae Leng, 1920 because of the synonymy of the type genus]
Type genus: Megalopinus Eichelbaum, 1915.

Primary references

Leng, C.W. 1920. Catalogue of the Coleoptera of America, North of Mexico. John D. Sherman, Jr., Mount Vernon, New York, x + 470 pp. Reference page. [original description: p. 98]

Additional references

Herman, L.H. 2001: Catalog of the Staphylinidae (Insecta, Coleoptera): 1758 to the end of the second millennium. IV. Staphylinine group (part 1) Euaesthetinae, Leptotyphlinae, Megalopsidiinae, Oxyporinae, Pseudopsinae, Solieriinae, Steninae. Bulletin of the American Museum of Natural History, (265): 1807–1220.
Leschen, R.A.B.; Newton, A.F. 2003: Larval description, adult feeding behavior, and phylogenetic placement of Megalopinus (Coleoptera: Staphylinidae). Coleopterists bulletin, 57: 469–493. DOI: 10.1649/586 JSTOR

The Megalopsidiinae are a subfamily of the Staphylinidae, rove beetles.[1] They have large eyes, antennae with distinct di- or trisegmented clubs. The tarsal formula is 5-5-5. They have unique elongated processes at theanterior margin of the labrum. They are found in decaying trees and fungus-infested logs. In North America, one genus and two species: Megalopinus caelatus (Gravenhorst) and M. rufipes (LeConte) are known.

An extinct species known as Megalopinus extinctus is known from Burmese amber[2]


Newton, A. F., Jr., M. K. Thayer, J. S. Ashe, and D. S. Chandler. 2001. 22. Staphylinidae Latreille, 1802. p. 272–418. In: R. H. Arnett, Jr., and M. C. Thomas (eds.). American beetles, Volume 1. CRC Press; Boca Raton, FL. ix + 443 p.
"Fossilworks: Megalopinus extinctus". Retrieved 7 January 2019.

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