Strumigenys cenagra

Identification
Bolton (2000) - A member of the Strumigenys scotti-group. S. cenagra stands apart from other Afrotropical members of the group because of the dense sculpture on the metapleuron, side of propodeum and postpetiole disc. Coupled with this the first gastral tergite has relatively very long basigastral costulae and a loose pelt of appressed long pubescence on the sclerite.

Distribution based on Regional Taxon Lists
Afrotropical Region: São Tomé & Principe.

Nomenclature

 *  cenagra. Strumigenys cenagra Bolton, 2000: 607 (w.) SÃO TOMÉ & PRÍNCIPE (São Tomé I.).

Worker
Holotype. TL 2.3, HL 0.63, HW 0.43, CI 68, ML 0.33, MI 52, SL 0.38, SI 88, PW 0.29, AL 0.62. Proximal preapical tooth on left mandible about equal to width of mandible, shorter than distance separating it from base of apicodorsal tooth and somewhat shorter than same tooth on right mandible. Outer margin of mandible evenly shallowly convex. Left distal preapical tooth just over half the length of the proximal. Scape subcylindrical, narrower than maximum diameter of eye. Preocular notch absent. Curved hairs that fringe upper scrobe margin small and slender, same as the cephalic ground-pilosity and slightly longer than the hairs on the leading edge of the scape. Katepisternum mostly smooth and shining; anepisternum, metapleuron and side of propodeum densely reticulate-punctate. Spongiform appendages well developed in profile: petiole with a conspicuous ventral curtain and lateral lobe; postpetiole with a broad lateral lobe and a broad deep ventral lobe. Postpetiole disc densely reticulate-punctate. Basigastral costulae dense and extend about half the length of the sclerite; spaces between the costulae shagreenate. First gastral tergite with stiff erect simple hairs, the surface of the sclerite with dense appressed pubescence; the pubescent hairs are quite long and very conspicuous, forming a loose pelt between the insertions of the erect main pilosity.

Type Material
Holotype worker, Sao Tome & Principe: Sao Tome I., Born Successo, Aerial, 6-7.vi.1999 (A. Polaszek).