Megalopinus

{{Short description|Genus of beetles}} {{Automatic taxobox | image = Megalopinus caelatus 0157226 dorsal.tif | image_caption = ''Megalopinus caelatus'' | taxon = Megalopinus | parent_authority = Leng, 1920 | authority = Eichelbaum, 1915 | display_parents = 2 | synonyms = '''<small>Genus synonymy</small>''' {{Genus list | Aulacotrachelus | Benick, L., 1920 | Megalopsidia | Leng, 1918 | Megalops | Erichson, 1839 | Megalops | Dejean, 1833 }} '''<small>Subfamily synonymy</small>''' {{Taxon list | Megalopininae | Naomi, 1986 | Megalopininae | Puthz, 1967 | Stylopodinae | Blackwelder, 1943 | Aulacotrachelinae | Benick, L., 1921 | Megalopsinae | Cameron, 1921 | Megalopini | Erichson, 1839 }} | synonyms_ref = <ref name=catlife>{{Catalogue of Life|id=9KVCQ|title=''Megalopinus''|access-date=15 January 2025}}</ref><ref>{{Catalogue of Life|id=9KTJM|title=Megalopsidiinae|access-date=15 January 2025}}</ref> }}

'''''Megalopinus''''' is the only genus in the subfamily '''Megalopsidiinae''' of the Staphylinidae.<ref>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.</ref> Species in this genus have large eyes, antennae with distinct di- or trisegmented clubs. The tarsal formula is 5-5-5. They have unique elongated processes at the anterior margin of the labrum. They are found in decaying trees and fungus-infested logs.<ref>{{Cite journal |last=Leschen & Newton |title=Larval description, adult feeding behavior, and phylogenetic placement of Megalopinus (Coleoptera: Staphylinidae). |journal=The Coleopterists Bulletin |date=2003 |volume=57 |issue=4 |pages=469–493|doi=10.1649/586 |s2cid=85394537 }}</ref> Four species are found in North America: ''Megalopinus caelatus'' (Gravenhorst, 1802), ''Megalopinus punctatus'' (Erichson, 1840), ''Megalopinus rufipes'' (LeConte, 1863) and ''[https://www.researchgate.net/publication/369691711%20Megalopinus%20lingafelteri%20spec%20nov%20from%20Arizona%20USA%20Coleoptera%20Staphylinidae%20Megalopsidiinae Megalopinus lingafelteri]'' [https://species.wikimedia.org/wiki/Tobias%20Mainda Mainda], 2023.

So far, more than 430 species are known from the entire New World.<ref name=catlife/><ref>{{Cite journal |last=Puthz |first=Volker |title=Über die neuweltlichen Megalopinus-Arten (Coleoptera, Staphylinidae) |url=https://www.zobodat.at/pdf/LBB_0044_1_0613-0834.pdf |journal=Linzer Biologische Beiträge |volume=44 |issue=1 |pages=613–834}}</ref> From the Orientalis 74 (+ one fossil, ''Megalopinus extinctus'' Yamamoto & Solodovnikov, 2016, described from Burmese amber<ref>{{cite web |title=Fossilworks: Megalopinus extinctus |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=332710 |website=fossilworks.org |access-date=7 January 2019}}</ref>) species are known.<ref>{{Cite journal |last=Mainda |first=Tobias |title=Contribution to the knowledge of the genus Megalopinus Eichelbaum, 1915 in the Oriental region (Coleoptera: Staphylinidae) |url=https://www.jtcoleop.com/submission_articles/Contribution%20to%20the%20knowledge%20of%20the%20genus%20Megalopinus%20Eichelbaum,%201915%20in%20the%20Oriental%20region%20(Coleoptera:%20Staphylinidae).pdf |journal=Tropical Journal of Coleopterology |date=2022 |volume=3 |issue=1 |pages=45–54|doi=10.53716/jtc.3.1.7.2022 }}</ref><gallery> Image: Megalopinus caelatus 0157226 dorsal.tif|''Megalopinus caelatus'' Image: Megalopinus caelatus 0157226 head.tif| ''M. caelatus'' </gallery>

==References== {{Reflist}}

==External links== {{Wikispecies|Megalopinus}}

*[http://bugguide.net/node/view/382841 Megalopsidiinae at Bugguide.net.]

Category:Staphylinidae Category:Beetle genera Category:Taxa described in 1915