Strumigenys dictynna

The type material was sampled from sifted litter.

Identification
Bolton (2000) – A member of the Strumigenys baudueri-group. The Afrotropical members of the group can be divided into two complexes on antennomere count. The central and west African species Strumigenys tacta and Strumigenys vodensa have 4, whilst the South African Strumigenys agnosta and dictynna have 6 antennomeres. The two South African species form a close pair, differentiated by the comparative table given under agnosta.

Distribution based on Regional Taxon Lists
Afrotropical Region: South Africa.

Nomenclature

 *  dictynna. Pyramica dictynna Bolton, 2000: 294 (w.) SOUTH AFRICA. Combination in Strumigenys: Baroni Urbani & De Andrade, 2007: 118

Worker
Holotype. TL 2.1, HL 0.53, HW 0.36, CI 68, ML 0.08, MI 16, SL 0.27, SI 75, PW 0.25, AL 0.56. Dorsum of clypeus with appressed small spatulate hairs that are directed anteromedially in the zone immediately behind the anterior margin, and directed medially behind this zone. Lateral margins of clypeus in full-face view without freely projecting haris but with a few appressed small spatulate hairs present. Ground pilosity of cephalic dorsum narrowly spatulate, decumbent to appressed. Standing hairs on cephalic dorsum restricted to a pair of long fine hairs close to the occipital margin medially and a more lateral pair that are directed dorsolaterally from close to the occipital corners. Dorsolateral margins of head in full-face view with a pair of flagellate hairs situated posteriorly on the occipital lobes. The dorsal pair of hairs at the occipital corners may also be visible in full-face view, projecting laterally behind the flagellate pair. Clypeus finely reticulate-punctate, the cephalic dorsum finely punctate-rugulose. A distinct longitudinal impression present dorsally, running from the posterior margin of the clypeus almost to the highest point of the vertex. Eye of moderate size, with 4 ommatidia across the greatest diameter. Pronotal dorsum with sparse vestigial traces of longitudinal costulae and faint scattered vestiges of punctulae; mostly shining. Mesonotum and anterior half of propodeal dorsum reticulate-punctate, the postpetiole glassy smooth. Propodeum armed with short triangular teeth subtended by a narrow lamella. Erect simple hairs present on dorsal alitrunk and waist segments; many appear feebly flagellate but some are truncated apically. Similar hairs present on first gastral tergite, most are truncated apically.

Paratypes. TL 2.0-2.1, HL 0.52-0.54, HW 0.36-0.38, CI 68-70, ML 0.08, MI 16-20, SL 0.26-0.29, SI 72-76, PW 0.23-0.25, AL 0.55-0.58 (8 measured).

Type Material
Holotype worker, South Africa: South Cape Prov., Tsitsikama, Lottering For. Res., 12.xii.1979, E-Y 1419, sifting (S. Endrody-Younga).

Paratypes. 11 workers with same data as holotype (TVM,, , ).