Baracidris sitra, Bolton, B., 1981

Bolton, B., 1981, A revision of six minor genera of Myrmicinae (Hymenoptera: Formicidae) in the Ethiopian zoogeographical region., Bulletin of the British Museum (Natural History) Entomology 43, pp. 245-307 : 256

Baracidris sitra sp. n.

(Fig. 14)

Holotype worker. TL 20, HL 0.51, HW 044, CI 86, SL 0.31, SI 70, PW 0.31, AL 0.56.

Answering to the description of meketra above as regards general shape, sculpture etc., but differing as follows.

Anterior clypeal margin produced into a short truncated simple lobe. Occipital margin of head in full-face view transverse or exceedingly feebly convex, not indented or concave medially. Larger, more stockily built species with relatively broader head and shorter antennal scapes compare standard measurements. Apart from these the lengths of apical and preapical funicular segments in sitra are 0.26, 007 respectively, and the dorsal lengths of promesonotum and propodeum are 0.35, 012 respectively. Petiole node in dorsal view slightly broader than long (013 by 010). Propodeal dorsum more strongly convex and the lamella linking the teeth to the metapleural lobes broader, minimum width of the lamella 0.06 (as opposed to 0.03 in meketra holotype).

Holotype worker, Gabon: Plateau d'Ipassa, VM 9, IPA 7 (J. A. Barra) (MCZ, Cambridge).

The two minute species of this genus are closely related, but the first and second characters noted above, plus the differences in dimensions, serve to separate them. Like most of the meketra material the holotype and only known specimens of sitra seems to come from a leaf-litter sample.