Camponotus rufonigrus

This species is known from a limited number of localities in southern South Australia. Two collections consists of single minor workers, while one (from Cambrai) contains nine minor workers collected at six different times during January and February, 1972. Thus this species has been rarely collected and then generally in small numbers. The limited biological information suggests that this species occurs on sand.

Identification
Anterior clypeal margin broadly convex across its entire width. Tibiae and scapes lacking erect hairs; propodeum with more than 10 erect hairs which are scattered along the entire dorsal surface. Petiolar node angular or broadly rounded above, the anterior face at most only slightly shorter than the posterior face. Black head contrasting with red mesonotum.

Distribution based on Regional Taxon Lists
Australasian Region: Australia.

Nomenclature

 *  rufonigrus. Camponotus rufonigrus Shattuck & McArthur, 2002: 80, figs. 38-40 (w.) AUSTRALIA.

Minor worker
Anterior clypeal margin evenly convex, carina strong. Pronotum and mesonotum forming an even convexity, metanotum indistinct, propodeal dorsum concave anteriorly and flat posteriorly, angle rounded, declivity straight, ratio of dorsum to declivity about 1.5. Anterior face of petiolar node flat, short, summit widely rounded, posterior face convex. Dorsal and under surfaces of head, mesosoma, petiole, gaster and coxa with sparse long erect setae. Entire body clothed in fine short indistinct flat lying pubescence. Head, anterior of mesosoma, most of node and gaster dark brown to black, otherwise red-brown.

Measurements
Minor worker (n=3). CI 0.85 — 0.86; HL 1.37mm — 1.60mm; HW 1.16mm — 1.38mm; ML 2.19mm — 2.59mm; MTL 1.53mm — 1.96mm; PnW 0.98mm — 1.20mm; ST 1.44 — 1.55; SL I .75mm — 2.14mm.

Etymology
Named after its red and black body colour.