Tapinoma madeirense

This species was known as T. ambiguum Emery, 1925 for many years and was recently synonymised with T. madeirense by Wetterer et al. (2007). At present it seems widespread in central and southern Europe (Rigato & Toni, 2011).

Distribution
This taxon was described from Portugal (Madeira Island). It is also found in United Kingdom of Great Britain and Northern Ireland.

Nomenclature

 *  madeirense. Tapinoma erraticum var. madeirense Forel, 1895d: 231 (w.) PORTUGAL (Madeira I.). Emery, 1925d: 56 (q.). Raised to species and senior synonym of ambiguum: Wetterer, Espadaler, et al. 2007: 24. See also: Seifert, 2012a: 142.
 * ambiguum. Tapinoma erraticum subsp. ambiguum Emery, 1925d: 57, fig. 9 (w.q.m.) FRANCE. Junior synonym of erraticum: Baroni Urbani, 1964b: 55. Revived from synonymy and raised to species: Kutter, 1977c: 181; Arnol'di & Dlussky, 1978: 547; Seifert, 1984a: 151. Junior synonym of madeirense: Wetterer, Espadaler, et al. 2007: 24.