Formica manchu

Distribution based on Regional Taxon Lists
Palaearctic Region: China, Mongolia.

Nomenclature

 *  manchu. Formica (Coptoformica) exsecta subsp. manchu Wheeler, W.M. 1929f: 10 (w.) CHINA. Raised to species and senior synonym of dlusskyi: Seifert, 2000a: 534.
 * longiceps. Formica (Coptoformica) longiceps Dlussky, 1964: 1036 (w.q.) MONGOLIA. [Junior primary homonym of longiceps Smith, F. 1863: 13, above.] Replacement name: dlusskyi Bolton, 1995b: 194. See also: Dlussky, 1965a: 19; Kupyanskaya, 1990: 202.
 * dlusskyi. Formica dlusskyi Bolton, 1995b: 194. Replacement name for longiceps Dlussky, 1964: 1036. [Junior primary homonym of longiceps Smith, F. 1863: 13.] Junior synonym of manchu: Seifert, 2000a: 534.

Worker
Head more narrowed behind than in the typical Formica exsecta, so that the distance between the posterior corners is decidedly shorter than the width of the head at its anterior corners. The occipital excision is therefore narrower though quite as deep as in the type. Clypeus more flattened, not carinate posteriorly. Maxillary palpi as long as in the type. Epinotum with more rounded and convex base, which is as long as the declivity and passing into it without a distinct angle. Petiolar scale much narrower above than in the typical exsecta, its sides nearly parallel, the excision of the superior border quite as sharp and deep, semicircular.

Body, especially the gaster, more opaque than in typical exsecta. Pilosity even less developed on the gaster. Color darker, the head black, except the cheeks, sides, gula and mandibles which are brownish red. The thorax, coxae and petiole are also brownish red, but the spot on the pronotum is black and more extensive than in typical exsecta. Gaster black; antennae and legs dark brown or in some specimens reddish brown.

Type Material
Described from several specimens taken by Messrs. P. H. and S. H. Dorsett at Boketu, Manchuria.