Catalogue of the hymenopterous insects in the collection of the British Museum. Part VI. Formicidae. Author Smith, F. text 1858 British Museum London http://antbase.org/ants/publications/8127/8127.pdf book 8127 C86CFDBF-61D9-48EE-9C2E-325FC0462B10 4. Tapinoma gracilescens . B.M. Formica gracilescens , Nyl. Form. Fr. et d'Alger. 73. Hab. Botanical Gardens at Kew and Paris; Madeira. (Coll. T. V. Wollaston, Esq.)