Myrmicium

This genus has been transferred to the family †Pseudosiricidae.

Nomenclature
Taxonomic history
 * † MYRMICIUM [Symphyta]
 * †Myrmicium Westwood, 1854: 396. Type-species: †Myrmicium heerii, by monotypy.
 * †Myrmicium in Formicidae, Myrmicinae: Dalla Torre, 1893: 108; Bolton, 1995b: 37 (anachronism).
 * †Myrmicium excluded from Formicidae: transferred to †Myrmiciidae (Symphyta) by Maa, 1949: 17; Rasnitsyn, 1969: 17; Jarzembowski, 1993: 179.
 * †Myrmicium excluded from Formicidae: transferred to †Pseudosiricidae (Symphyta) by Handlirsch, 1906: 577; Abe & Smith, D.R. 1991: 53; Bolton, 2003: 264.
 * †Myrmicium as junior synonym of †Pseudosirex: Handlirsch, 1906: 577.
 * †Myrmicium as junior synonym of Myrmica: Dalla Torre, 1893: 108; Forel, 1915d: 9.
 * †Myrmicium as genus: Westwood, 1854: 396; Maa, 1949: 17; Rasnitsyn, 1969: 17; Jarzembowski, 1993: 179; Bolton, 1995b: 37; Bolton, 2003: 264.
 * [†Myrmecium: incorrect subsequent spelling by Dalla Torre, 1893: 108; Forel, 1915d: 9.]