Megalopinus

Megalopinus
Megalopinus caelatus
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Suborder: Polyphaga
Infraorder: Staphyliniformia
Family: Staphylinidae
Subfamily: Megalopsidiinae
Leng, 1920
Genus: Megalopinus
Eichelbaum, 1915
Synonyms

Genus synonymy

  • Aulacotrachelus Benick, L., 1920
  • Megalopsidia Leng, 1918
  • Megalops Erichson, 1839
  • Megalops Dejean, 1833

Subfamily synonymy

  • Megalopininae Naomi, 1986
  • Megalopininae Puthz, 1967
  • Stylopodinae Blackwelder, 1943
  • Aulacotrachelinae Benick, L., 1921
  • Megalopsinae Cameron, 1921
  • Megalopini Erichson, 1839

Megalopinus is the only genus in the subfamily Megalopsidiinae of the Staphylinidae. 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. 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, more than 430 species are known from the entire New World. From the Orientalis 74 (+ one fossil, Megalopinus extinctus Yamamoto & Solodovnikov, 2016, described from Burmese amber) species are known.

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