Strumigenys lasia

A forest species that has been collected from litter samples.

Identification
Bolton (2000) - The only member of the Strumigenys lasia-group. Cephalic dorsum finely loosely reticulate-rugulose. Pronotum flat, dorsum smooth with scattered small punctures. Remainder of dorsal alitrunk reticulate-punctate. Side of alitrunk mostly smooth, with fine puctulation on the propodeal side, at least in front of the spiracle. Dorsum of petiole and disc of postpetiole densely punctulate-rugulose.

Distribution based on Regional Taxon Lists
Afrotropical Region: Gabon, Uganda.

Nomenclature

 *  lasia. Cladarogenys lasia Brown, 1976b: 34, figs. 1-5, A-D (w.) GABON. Combination in Pyramica: Bolton, 1999: 1672; in Strumigenys: Baroni Urbani & De Andrade, 2007: 122. See also: Bolton, 2000: 308.

Worker
TL 2.8-3.2, HL 0.68-0.70, HW 0.50-0.52, CI 74, ML 0.30-0.32, MI 43-46, SL 0.46-0.52, SI 92-98, PW 0.40-0.42, al 0.80-0.82 (3 measured).

Bolton (1983) - TL 3.2, HL 0.70, HW 0.52, CI 74, ML 0.32, MI 46, SL 0.55, SI 106, AL 0.54.

Mandibles as noted under the generic diagnosis. Anterior clypeal margin prominent medially but not overlapping the bases of the mandibles. Posterodorsal margins of head forming a raised rim which extends to the posterolateral margin, expanded into a small flat truncated tubercle on each side and with a similar but smaller tubercle in front of this, just dorsal to the eye on each side. Dorsum of head densely clothed with simple fine hairs and with a long flagellate hair arising from the tubercle above the eye on each side. Dorsum of head irregularly rugulose, the spaces between the rugulae reticulate-punctate; clypeal dorsum reticulate-punctate. Posterodorsal corners of vertex with a sulcus which parallels the rim and is composed of 3-4 partially confluent foveae with concave shining bottoms. Pronotal humeri bluntly tuberculate and equipped with a pair of long flagellate hairs. Metanotal groove impressed. Pronotal dorsum shining, with quite dense shallow foveolae, the remainder of the dorsal alitrunk reticulate-punctate with superimposed rugulae, some of them enclosing irregular pits. Sides of pronotum finely punctate, mesopleuron finely punctulate and remainder of pleuron smooth; sides of propodeum reticulate-punctate. Petiole and postpetiole punctulate-rugulose. Gaster smooth with conspicuous basal costulae. Entire dorsum of body densely clothed with fine simple pilosity, and with paired long flagellate hairs on mesonotum and petiole. Postpetiole with several and gaster with more than 30 flagellate hairs.

Type Material
Bolton (1983) - Holotype worker, GABON: or Makokou, Laboratoire de Primatologie et d'Ecologie Equatoriale, ix.-xii.1972, berIesate of rain forest litter and humus (I. Lieberburg).