Extant: 1 valid subspecies
Monomorium intrudens Smith, 1874b PDF: 406 (w.) JAPAN. Palearctic. AntCat AntWiki HOLTaxonomic history
Junior synonym of Monomorium floricola: Wheeler, 1906h PDF: 310 (in text); Yano, 1910a PDF: 419; Emery, 1922c PDF: 172; Onoyama, 1980a PDF: 198.Status as species: Dalla Torre, 1893 PDF: 67; Bolton, 1987 PDF: 390 (in text); Ogata & Bolton, 1989 PDF: 460; Ogata, 1991b PDF: 107; Morisita et al., 1992: 40; Bolton, 1995b: 263; Zhou, 2001a PDF: 116; Imai et al., 2003 PDF: 133; Lin & Wu, 2003: 66; Terayama, 2009 PDF: 153; Guénard & Dunn, 2012 PDF: 45.Senior synonym of Monomorium nipponense gracilum: Ogata & Bolton, 1989 PDF: 460; Bolton, 1995b: 263; Zhou, 2001a PDF: 116; Imai et al., 2003 PDF: 133.Senior synonym of Monomorium nipponense: Bolton, 1987 PDF: 390 (in text); Ogata & Bolton, 1989 PDF: 460; Bolton, 1995b: 263; Zhou, 2001a PDF: 116; Imai et al., 2003 PDF: 133; Terayama, 2009 PDF: 153.Senior synonym of Monomorium nipponense robustum: Ogata & Bolton, 1989 PDF: 460; Bolton, 1995b: 263; Imai et al., 2003 PDF: 133.Senior synonym of Monomorium nipponense satoi: Ogata & Bolton, 1989 PDF: 460; Bolton, 1995b: 263; Imai et al., 2003 PDF: 133.
