Cyphomyrmex hamulatus

Little is known about the biology of this species.

Identification
Kempf (1964) - The sharp carinae and spines and the striking hook-like pilosity arising from minute but sharp tubercles on gaster characterize the present species.

Distribution
Snelling and Longino (1992) - The range of Cyphomyrmex hamulatus extends from Trinidad to Venezuela and north to Costa Rica

This taxon was described from Bolivia.

Castes
This species is only known from the workers.

Nomenclature

 *  hamulatus. Cyphomyrmex rimosus subsp. hamulatus Weber, 1938b: 190 (w.) BOLIVIA. Wheeler, G.C. & Wheeler, J. 1983: 608 (l.). Raised to species: Kempf, 1966: 197. Senior synonym of trinitatis: Snelling & Longino, 1992: 490.
 * trinitatis. Cyphomyrmex rimosus subsp. trinitatis Weber, 1938b: 189 (w.q.) TRINIDAD. Junior synonym of hamulatus: Snelling & Longino, 1992: 490.

Worker
Kempf (1964) - Total length 2.7 mm; head length 0.66 mm; head width 0.63-0.66 mm; thorax length 0.88-0.93 mm; hind femur length 0.72-0.75 mm. Ferruginous, with head and gaster somewhat infuscated. Very close to Cyphomyrmex rimosus but presenting the following particularities:

Frontal carinae quite sinuous (fig 9). Antennal scape surpassing the occipital corner - which bears a minute acute denticle - by a distance equalling its maximum width. Funicular segments II and III combined as long as segment I. Eyes with 7-8 facets across the greatest diameter. All carinae very sharp and somewhat foliaceous. Promesonotal tubercles acutely pointed (fig 22). Basal face and upper half of declivous face of epinotum laterally carinate. Hind femora (fig 47) angulate at basal third, postero-ventral border with a narrow foliaceous crest. Petiolar node rather transverse, strongly constricted behind. Postpetiole with a shallow and broad postero-median impression, flanked by a pair of low and inconspicuous lateral ridges, terminating behind in a low rounded tubercle, not very prominent in profile; postero-lateral impressions rather deep. Tergum I of gaster with a very short and vestigial antero-median impression; sides of same tergum rather sharply marginate. Hairs short, simple and hooked, those of gaster are produced on distinct tubercles.

Type Material
Kempf (1964) - A few workers taken in March 1922 by W. M. Mann at Cachuela Esperanza on the lower Beni River in Bolivia. Four specimens (syntypes: NAW, MCZ, WWK) examined.