Cephalotes emeryi

Nothing is known about the biology of .

Identification
A member of the emeryi clade differing from the other two species of the clade by the absence of long, flexuous hairs. (de Andrade and Baroni Urbani 1999)

Distribution based on Regional Taxon Lists
Neotropical Region: Lesser Antilles, Mexico.

Nomenclature

 * . Cryptocerus emeryi Forel, 1912e: 203 (w.) NETHERLANDS ANTILLES (Curaçao).
 * Type-material: lectotype worker (by designation of Kempf, 1951: 234), 2 paralectotype workers.
 * Type-locality: lectotype Netherlands Antilles: Curaçao (Landolt), paralectotypes with same data.
 * Type-depository: MHNG.
 * Combination in Paracryptocerus (Harnedia): Kempf, 1951: 233;
 * combination in Zacryptocerus: Brandão, 1991: 386;
 * combination in Cephalotes: De Andrade & Baroni Urbani, 1999: 521.
 * Status as species: Emery, 1924d: 309; Kempf, 1951: 233 (redescription); Kempf, 1972a: 177; Brandão, 1991: 386; Bolton, 1995b: 425; De Andrade & Baroni Urbani, 1999: 521 (redescription).
 * Distribution: Curaçao.

Worker
Kempf (1951) - Length 5.3 mm. Median head length 1.24 mm; Weber's length of thorax 1.51 mm. Black; tip of last funicular segment and apical tarsal segments dark ferruginous. Tips of mandibles rufous-brown.

Head subopaque, subquadrate; its maximum length slightly longer than the interocular width (61 :58). Mandibles rugulose. Frontal carinae not transparent nor membranous, their lateral border vestigially crenulate in front, slightly diverging behind, sinuate, scarcely upturned above the eyes. Occipital angles obliquely truncate, not serrated nor notched. Eyes small, greatly convex, their greatest diameter less than 1/4 of the median head length. Upper surface of head somewhat convex discad, flatter towards the sides, finely reticulate-punctate, sparsely covered with squamiferous foveolae, which are slightly denser and encircled by a raised network of rugae towards the sides and the occiput. Vertex with a more or less vestigial pair of small denticles.

Thorax subopaque. Anterior border moderately arcuate. Shoulders angulate. Sides of pronotum with a flat, narrow, rectangular projecting lamella, the posterior border of which is emarginate and converges obliquely toward the posterior, rectangular corner of the pronotum. Promesonotal suture vestigial. Mesonotum with a faint denticle on each side. Mesoepinotal suture deeply impressed laterad, obsolescent mesad. Anterior corner of basal face of epinotum sharply rectangular, the sides with a strongly projecting rectangular tooth. Declivous face more or less differentiated from the basal face. Dorsum of thorax finely reticulate-punctate, coarsely areolate-rugose, each areole containing a squamiferous foveola. Basal face of epinotum longitudinally striato-rugose. Declivous face without distinct macro sculpture and pilosity. Sides of thorax rather coarsely and more or less longitudinally rugose. Femora not angulate above at half. Hind basitarsus little compressed and broadened.

Peduncular segments subopaque, dorso-lateral sculpture as on dorsum of thorax. Petiole narrower than the postpetiole, its anterior face obliquely truncate, finely reticulate-punctate, without macrosculpture nor pilosity. Anterior corners rounded, the sides with a small tooth, constricted and converging behind the tooth. Postpetiole with a stout, thick, lateral, triangular tooth, arising from the anterior corner, pointin g obliquely backwards and sidewards. Dorsal face with a pair of vestigial longitudinal ridges.

Gaster short, elliptical, subopaque, slightly emarginate in front mesad, not extremely convex above, the length: depth proportion being more than 1.5 (69:43). The anterolateral border sharply marginate, not crested. First gastral tergite finely reticulate-punctate, longitudinally rugulose. Sculpture evanescent discally, where the integument is almost smooth and subfulgid.

Sides of head, including the truncate occipital corners, sparsely beset with short, thick, whitish, projecting setulae. Upper surface of head, thorax, peduncle, and gaster with long, flat, decumbent, light, aureate, scale-like hairs, which are longitudinally canaliculate. Scales very dense on the basal face of the epinotum and the peripheral portions of the first gastral tergite. Scales sparser on the sides of the thorax. Small and sparse on the appendages.

de Andrade and Baroni Urbani (1999) - Measurements (in mm) and indices: TL 5.20-5.78; HL 1.24-1.36; HW 1.44-1.58; EL 0.32-0.34; PW 1.32-1.48; PeW 0.51-0.63; PpW 0.55-0.62; HBaL 0.49-0.52; HBaW 0.15-0.16; CI 116.1-116.2; PI 106.7-109.1; PPeI 234.9-258.8; PPpI 238.7-240.0; HBaI 30.6-30.8.

Type Material
de Andrade and Baroni Urbani (1999) - Worker. Type locality: Cural;ao. Type material: lectotype worker designated by Kempf, 1951 and two syntype workers from Curacao (Landolt) in, examined.

References based on Global Ant Biodiversity Informatics

 * Brandao, C.R.F. 1991. Adendos ao catalogo abreviado das formigas da regiao neotropical (Hymenoptera: Formicidae). Rev. Bras. Entomol. 35: 319-412.
 * Dattilo W. et al. 2019. MEXICO ANTS: incidence and abundance along the Nearctic-Neotropical interface. Ecology https://doi.org/10.1002/ecy.2944
 * Forel A. 1912. Formicides néotropiques. Part II. 3me sous-famille Myrmicinae Lep. (Attini, Dacetii, Cryptocerini). Mémoires de la Société Entomologique de Belgique. 19: 179-209.
 * Kempf W. W. 1951. A taxonomic study on the ant tribe Cephalotini (Hymenoptera: Formicidae). Revista de Entomologia (Rio de Janeiro) 22:1-244
 * Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
 * Mirmecofauna de la reserva ecologica de San Felipe Bacalar
 * Vásquez-Bolaños M. 2011. Lista de especies de hormigas (Hymenoptera: Formicidae) para México. Dugesiana 18: 95-133
 * de Andrade, M.L. & C. Baroni Urbani. 1999. Diversity and Adaptation in the ant genus Cephalotes, past and present. Stuttgarter Beitrage zur Naturkunde Serie B 271. 893 pages, Stuttgart