Cephalotes cordatus

Distribution
This taxon was described from Brazil.

Nomenclature

 *  cordatus. Cryptocerus cordatus Smith, F. 1853: 220, pl. 21, fig. 3 (w.) BRAZIL. Emery, 1894c: 202 (s.). Combination in Paracryptocerus: Kempf, 1951: 213; in Zacryptocerus: Brandão, 1991: 385; in Cephalotes: Baroni Urbani, 1998: 326; De Andrade & Baroni Urbani, 1999: 317. Senior synonym of boliviensis: Kempf, 1951: 213.
 * boliviensis. Cryptocerus cordatus var. boliviensis Santschi, 1921h: 126, fig. 2 (w.q.) BOLIVIA. Junior synonym of cordatus: Kempf, 1951: 213.

Worker
Kempf (1951) - Length 6.9 mm. Median head length 1.68 mm; Weber's length of thorax 2,04 mm. Black; the following fuscous ferruginous: apex of mandibles, three apical tarsal segments. Tips of last funicular segment yellowish-brown.

Head subopaque, subquadrate. Mandibles finely reticulate-punctate, finely longitudinally rugulose. Sides of head very little sinuate, somewhat converging anteriorly, frontal carinae curved mesad, forming a blunt, small tooth in front of the eye, prolonged behind as a distinct carina, reaching the occipital corner, very scarcely upturned above the eye. Occipital corner forming a distinct angle. Occipital border emarginate mesally, sharply crested laterad. Upper surface of head very little convex, finely reticulate-punctate, more sparsely covered with shallow, oval grooves, each containing a conspicuous, usually canaliculate, silvery, appressed scale. Cheeks strongly carinate below, densely covered with large, canaliculate, silvery scales. Lower surface of head more fulgid, with sparser scales.

Thorax subopaque. Sides of lateral pronotal plates somewhat converging behind, anterior corner angulate, posterior corner rounded. Promesonotal suture obsolete. Mesonotum with a strong lateral spine. Mesoepinotal suture vestigial. Basal face of epinotum with a large, broad triangular, plate-like tooth on each side and a posterior rather short, slender, acuminate spine, projecting obliquely backward, much shorter than the length of the basal face. Promesonotum, in profile, somewhat convex. Posterior border of basal face of epinotum submarginate. Sides of declivous face carinate. Dorsum of thorax finely reticulate-punctate, with sparse, squamiferous foveolae, the scales being appressed and canaliculate. Laterotergite of pronotum longitudinally striated. Declivous face very finely, superficially reticulate. Tibiae prismatic.

Petiole and postpetiole subopaque, with a vestigial longitudinal medial carinule above, beginning behind the anterior border on the postpetiole. Spines of petiole upturned and slightly recurved.

Gaster subopaque, elongate, cordiform, shallowly emarginate anteriorly mesad; with an anterolateral foliaceous border. Sculpture as on dorsum of thorax, foveolae only vestigial, scales slender, simple. Erect hair confined to the terminal tergites and the sternites.

de Andrade and Baroni Urbani (1999) - Measurements (in mm) and indices: TL 4.44-7.88; HL 1.12-1.92; HW 1.36-2.28; EL 0.38-0.53; PW 1.28-2.16; PeW 0.88-1.60; PpW 0.80-1.36; HBaL 0.45-0.76; HBaW 0.19-0.32; CI 121.4-135.0; PI 105.5-114.9; PPeI 130.0-146.8; PPpI 139.1-160.0; HBaI 40.0-42.2.