Macrocheilus scapularis (Reiche, 1843)

Serrano, Artur R. M., 2023, Afrotropical ground beetles of Macrocheilus Hope, 1838 (Coleoptera, Carabidae) description of four new species and faunistic notes, Zootaxa 5256 (1), pp. 1-35 : 25

Macrocheilus scapularis (Reiche, 1843)

Figs. 11a , 12a , 13b

Studied material. 1 male: “nº 2805, Congo Belge, P. N.G., II/fe/18,\ Réc. H. de Saeger, 24.XI.1951 \ Miss. H. de Sager ” ( MRAC) ; 1 female: “nº 2873, Zaire: P.N.G., II/gd/10,\ H. de Saeger, 6.XII.1951 \ abords marécageaux” ( MRAC) .

Remarks. The species has a scattered distribution throughout Central and Oriental Africa ( Basilewsky 1960, 1962; Häckel & Farkač 2013). Both MRAC adult specimens were determined by P. Basilewsky. The loan of a MRAC adult male specimen allows the description of the male genitalia for the first time.

Male genitalia ( Fig. 13b ). Median lobe bossed and slightly dilated in the median region, constricted between basal bulb and shaft, apical margin rounded (dorsal and lateral views), apex downward (lateral view), ostium with one pair of asymmetric lateral thin and extensive scaled sclerotized stripes on dorsum, bending laterally downwards and backwards; left paramere longer than wide, without distal tooth.

Distribution. Democratic Republic of the Congo, Ethiopia, Kenya, Senegal.

Figures

FIGURE 11. Habitus of Macrocheilus (dorsal view). a, M. scapularis (MRAC, plus labels); b, M. spectandus (holotype); c, M. spectandus, TAN (TAC); d, M. taedatus (paratype); e, M. taedatus, TAN (TAC); f, M. viduatus katanganus (holotype, plus labels); g, M. viduatus katanganus, ZAM (PSC).

FIGURE 12. Labrum of Macrocheilus (dorsal view). a, M. scapularis (MRAC); b, M. spectandus, TAN (TAC); c, M. taedatus, TAN (TAC); d, M. viduatus katanganus, ZAM (PSC).

FIGURE 13. Aedeagus of Macrocheilus: median lobe and right paramere (left, lateral view) and median lobe (right, dorsal view). a, M. persimilis, ZAM (TAC); b, M. scapularis (MRAC); c, M. spectandus, ZAM (TAC); d, M. viduatus katanganus, ZAM (PSC).