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 1. Pheidole pusilla . Pl. IX. figs. 18-20. B.M. ( Oecophthora pusilla, Heer , Ueber die Hausameise Madeira's, 1852; Ann. & Mag. Nat. Hist. ser. 2. xvii. 225 (1856). Hab. Madeira.