Catalogue of the hymenopterous insects collected at Sarawak, Borneo; Mount Ophir, Malacca; and at Singapore, by A. R. Wallace. Author Smith, F. text Journal of the Proceedings of the Linnean Society of London, Zoology 1857 2 42 88 http://antbase.org/ants/publications/2588/2588.pdf journal article 2588 D09C3FFA-7EB5-4A2D-A55E-A3229619A2A2 5. Trigona laeviceps . T. nigra; capite-laevi et nitido, antice pube cinerea tecto; thorace nitido, alis subhyalinis, abdomine castaneorufo. Worker. Length 1 1/2 line. Head and thorax black: the face, above the insertion of the antennae, smooth and shining; the antennae rufotestaceous; the clypeus with a hoary pubescence; its anterior margin, and also the mandibles, ferruginous. Thorax smooth and shining, the metathorax highly polished; the wings subhyaline and iridescent, the stigma and nervures ferruginous. Abdomen ferruginous, smooth and shining. Hab. Singapore.