Camponotus fumidus haytianus

Wheeler and Mann (1914) found this ant nesting in the soil.

Identification
Wheeler and Mann (1914) noted this ant is "easily distinguished from our other North American forms of  maculatus by the large, triangular head of the worker major" but this species is now considered to be a subspecies of Camponotus fumidus,

Distribution based on Regional Taxon Lists
Neotropical Region: Haiti.

Nomenclature

 *  haytianus. Camponotus maculatus subsp. haytianus Wheeler, W.M. & Mann, 1914: 48, fig. 20 (s.w.) HAITI. Combination in C. (Tanaemyrmex): Emery, 1925b: 81. Currently subspecies of fumidus: Santschi, 1922c: 101.

Worker
Major

Length: 11-12 mm.

Head large, subtriangular, a little longer than broad (4.3 mm. long, 4 mm. broad), much narrower in front than behind, with broadly and rather deeply excised posterior border, prominent posterior corners, and rather straight sides. Mandibles long, convex at their tips, 8-toothed. Clypeal lobe rather long, its median border transverse, straight or very feebly sinuate it, corners blunt and rounded. Antennae slender, their scapes curved and extending less than one third their length beyond the posterior corners of the head. Thorax rather slender, and low, through the pronotum about one half as broad as the head. Epinotum long, base in profile straight or very feebly convex, about twice as long as the declivity into which it passes through a rounded, obtuse angle. Petiolar node in profile cuneate, thick at the base, rather pointed at the summit, with very feebly convex anterior and posterior surfaces; seen from behind its margin is rounded and bluntly pointed in the middle. Posterior tibiae not compressed and not bearing a row of graduated bristles on their flexor surfaces.

Shining and very finely shagreened; mandibles opaque and finely granular at the base, with only a few scattered, coarse punctures along the dental border. Cheeks, clypeus and front without coarse punctures and the piligerous punctures covering these and other portions of the body very small and sparse. Meso- and epinotum subopaque.

Hairs yellow, erect, sparse; long on the body, shorter but very conspicuous on the scapes and tibiae; those on the mandibles very short; cheeks altogether without hairs.

Head dark blackish brown; mandibles, antennae, clypeus and front dark red; thorax and gaster yellow, the mesonotum and in .some specimens also the pronotum and epinotum, but to a less extent, infuscated. Each gastric segment with a broad, not very sharply defined, brown band across its posterior half; tibi:.e and tarsi slightly reddish.

Minor

Length 7-9 mm.

Head a little more than 1 1/2 times as long as broad, very slightly broader in front than behind, with straight sides and the postocular portion rather short anq semicircular behind, with short, concave occipital border. Antennae very slender, their scapes reaching about one half their length beyond the posterior corners of the head. Thorax and petiole similar to those of the worker major.

In sculpture, pilosity and color similar to the worker major, but the mandibles, clypeus, cheeks and front more yellowish.

Type Locality Information
Diquini and Port au Prince, Haiti.