Crematogaster cedrosensis

Distribution based on Regional Taxon Lists
Neotropical Region: Mexico.

Nomenclature

 * . Crematogaster lineolata subsp. cedrosensis Wheeler, W.M. 1934f: 136 (w.) MEXICO (Baja California).
 * Type-material: lectotype worker (by designation of Ward & Blaimer, 2022: 911), 7 paralectotype workers.
 * Type-locality: lectotype Mexico: Baja California, Cedros I., 5.vi.1925 (H.H. Keifer); paralectotypes with same data.
 * Type-depositories: CASC (lectotype); CASC, LACM, MCZC (paralectotypes).
 * Subspecies of lineolata: Wheeler, W.M. 1935g: 22.
 * Subspecies of opaca: Enzmann, J. 1946c: 94; Bolton, 1995b: 150.
 * Junior synonym of laeviuscula: Morgan & Mackay, 2017: 197.
 * Status as species: Ward & Blaimer, 2022: 911.
 * Distribution: Mexico.

Worker
Length 3-3.5 mm.

Related to Crematogaster laeviuscula, but differing as follows: Smaller and less robust, with smaller head and narrower thorax, the mesoepinotal constriction less pronounced both dorsally and laterally; the carina on the mesonotum shorter, very prominent and often tooth-like in profile; epinotal spines much shorter, not longer than the base of the epinotum, very thin and acute, straight and much less diverging posteriorly; petiole narrower, trapezoidal, less cordate anteriorly. Smoother and more shining than laeviuscula, but cheeks and clypeus more sharply longitudinally rugulose, petiole subopaque and finely punctate. Pubescence on scapes and legs less abundant, finer and appressed. Color much darker, being castaneous brown, with darker head; antennal clubs and gaster, except at the base, black; legs slightly paler brown than the thorax.

Type Material
Eight specimens from Cedros Island (VI.5.'95).