Macrocheilus bicolor Andrewes, 1920

Zhao, Danyang & Tian, Mingyi, 2012, Taxonomic notes on the Macrocheilus Hope (Coleoptera, Carabidae, Helluonini) from Oriental Region, with description of one new species from the Philippines, ZooKeys 228, pp. 77-100 : 79-82

Macrocheilus bicolor Andrewes, 1920 Figs 1, 9, 17, 37, 43

Macrocheilus bicolor Andrewes 1920: 503; Andrewes 1930: 206; Csiki 1932: 1573; Lorenz 2005: 512. Type locality: India (Bombay: Belgaum), deposited in NHML.

Diagnosis.

Length 6.3-6.5 mm, width 2.5 mm. Head and prothorax red; elytra black or sometimes bluish black. Labrum (Fig. 1) semicircular in front, shortly depressed towards base, front pair of setae small and closely placed along the front margin, intermediate one at a distance from margin; ligula rectangular, with a wide and deep median impression, a pair of setae at a distance form apex depressed at base; apex truncate, outer apical angles rounded; mentum (Fig. 9) glabrous at base, both tooth and lobes elongate, slender and sharp at apex; tooth almost as long as lobes, two pairs of setae on base; lobes sinuate at a distance from apex along outer margin; maxillary palpi (Fig. 17) not dilated. Elytra without spots.

Female genitalia. Gonocoxite short, stout, inner margin arcuate and not sinuate, apex short and sharp (Fig. 37).

Remarks.

This species is allied to the next species, Macrocheilus impictus (Wiedemann). Both differ from other species in the absence of elytral spot.

Materials examined.

Holotype: 1 female, labeled "Kaoeqaoe, 740, Type, Macrochilus bicolor Type Andr., H. E. Andrewes det.; H. E. Andrewes Coll. B. M. 1945-97.; Macrochilus bicolor Andrewes, 1920", deposited in NHML. 1 ex, sex unknown (the abdomen missing), labeled "Bangalore, Chikkangalur, Taboourel, 1900; Macrocheilus bicolor Andrewes, H. E. Andrewes det.", deposited in MNHN.

Distribution.

India.