Megalopsidiinae Explained

The Megalopsidiinae are a monogeneric subfamily of the Staphylinidae, which includes only the genus Megalopinus.^[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 the anterior margin of the labrum. They are found in decaying trees and fungus-infested logs.^[2] Four species are found in North America: Megalopinus caelatus (Gravenhorst, 1802), Megalopinus punctatus (Erichson, 1840), Megalopinus rufipes (LeConte, 1863) and Megalopinus lingafelteri Mainda, 2023.

So far, 333 species are known from the entire New World.^[3] From the Orientalis 74 (+ one fossil, Megalopinus extinctus Yamamoto & Solodovnikov, 2016, described from Burmese amber^[4]) species are known.^[5]

External links

• Megalopsidiinae at Bugguide.net. http://bugguide.net/node/view/382841

Notes and References

1. 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.
2. Leschen & Newton . Larval description, adult feeding behavior, and phylogenetic placement of Megalopinus (Coleoptera: Staphylinidae). . The Coleopterists Bulletin . 2003 . 57 . 4 . 469–493. 10.1649/586 . 85394537 .
3. Puthz . Volker . Über die neuweltlichen Megalopinus-Arten (Coleoptera, Staphylinidae) . Linzer Biologische Beiträge . 44 . 1 . 613–834.
4. Web site: Fossilworks: Megalopinus extinctus . fossilworks.org . 7 January 2019.
5. Mainda . Tobias . Contribution to the knowledge of the genus Megalopinus Eichelbaum, 1915 in the Oriental region (Coleoptera: Staphylinidae) . Tropical Journal of Coleopterology . 2022 . 3 . 1 . 45–54. 10.53716/jtc.3.1.7.2022 .