Macrocheilus taedatus Basilewsky, 1960

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 taedatus Basilewsky, 1960

Figs. 11d, e , 12c , 14c

Studied material. 1 female: “ Tanzania, 10/16.XII.99\near Mitundo, Dodoma prov. \ Werner & Lizler leg.” \\ “Collection\ Th. Assmann \ Bleckede, CAB” (yellow label)\\ “ Macrocheilus \ taedatus Bas. [h]\ det. Th. Assmann, 2008” [t] \\ “ Macrocheilus \ taedatus \ Basilewsky, 1960 ” [h]\ A. Serrano det. 2021” [t] [h].

Remarks. The species is distributed throughout Central and Oriental Africa ( Basilewsky 1960; Häckel & Farkač 2013). The female specimen of Tanzania fits the original description of the species, allowing the description of the genitalia for the first time.

Male genitalia. Drawings of median lobe in lateral and dorsal views and left paramere were provided by Basilewsky (1960, Figs. 2b, e ). Taking into account these drawings the median lobe is slightly arcuate in the ventral edge, straight near apex (lateral view), not constricted between basal bulb and shaft, apical margin acuminated (dorsal view), presenting also a pair of large sclerotized stripes dorsally in the middle of the apical ostium.

Female genitalia ( Fig. 14c ). Gonocoxite 1 subtriangular; gonocoxite 2 slender sickle shaped, apex sharp; dorsal surface slightly concave, covered with few minor setae, outer margin with 4 sub marginal setae and 2 marginal setae, apical half of inner margin with 6–7 setae, longitudinal median rib extending from apex to basal area without setae; ventral surface slightly convex, smooth.

Distribution. Democratic Republic of the Congo, Kenya, Republic of Rwanda, Tanzania, Uganda.

Figures

FIGURE 2. Labrum of Macrocheilus (dorsal view). a, M. assmanni n. sp. (holotype); b, M. kudrnai n. sp. (holotype); c, M. philippeorum n. sp. (paratype); d, M. schuelei n. sp. (holotype); e, M. alluaudi, CON (PSC); f, M. basilewskyi, TAN (TAC); g, M. biguttatus, SEN (ACC); h, M. bimaculatus, RCA (TAC); i, M. clasispilus, RCI (ACC).

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 14. Right gonopods (gonocoxite 1 and 2) of female genitalia of Macrocheilus: gonocoxite 2 (left, dorsal view) and gonocoxites 1 and 2 (right, ventral view). a, M. proximus, ETI (TAC);; b, M. quadrinotatus, ANG (ASC); c, M. taedatus, TAN (TAC); d, M. viduatus katanganus, RSA (PSC).