Macrocheilus bimaculatus (Dejean, 1831)

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 : 13

Macrocheilus bimaculatus (Dejean, 1831)

Figs. 2h , 5b , 8a

Studied material. 1 male: “Quebo (Coli)\ 28/06/1995 \ Col. A. Serrano\\ “Miss. Ent. SPEN \ à Guiné-Bissau \ 25 Junho a 17 Julho 95”; 1 male: “Quebo (Coli)\ 29/06/1995 \ Col. A. Serrano\\ “Miss. Ent. SPEN \ à Guiné-Bissau \ 25 Junho a 17 Julho 95” \\ “ Macrocheilus \ bimaculatus \ (Dejean) [h]\ Det. A. Serrano, 1996” [t] [h]; 1 female: “Quebo (Coli)\ 03/07/1995 \ Col. A. Serrano\\ “Miss. Ent. SPEN \ à Guiné-Bissau \ 25 Junho a 17 Julho 95”; 1 male: “ Tanzania Iringa distr., lux\ Ipogoro Mountains, near\ Ndiuka Area, 10.II.2009 \ leg. K. Angelus” (white label)\\ “Collection\ Th. Assmann\ Bleckede, CAB” (yellow label)\\ “ Macrocheilus \ bimaculatus \ (Dejean)” [h]\ “A.Serrano det. 2021” [t] [h]; 1 male: “Central African Rep.\ Bamingui-Bangoran Pr.\ 45 km SSW Bamingui\ 13– 15.05.2009 450m \ A. Kudrna Jr. Lgt.” \\ “Collection\ Th. Assmann\ Bleckede, CAB” (yellow label)\\ “ Macrocheilus \ bimaculatus \ (Dejean)” [h]\ “A.Serrano det. 2021” [t] [h]; 1 male: “Afrique Senegal \ Parc du Sine Saloum\Reserve de Fathala\Ultra Violet 15.X.2009 \Alain Coache\\“ Macrocheilus \ bimaculatus \ (Dejean)” [h]\ “A.Serrano det. 2022” [t] [h]; 1 female: “Afrique Senegal \ Parc du Sine Saloum\Reserve de Fathala\Ultra Violet 16.X.2009 \Alain Coache\\ “ Macrocheilus \ bimaculatus \ (Dejean)” [h]\ “A.Serrano det. 2022” [t] [h]; 2 females: “Afrique de L`Ouest\ Senegal 14.X.2010 \ Parc du Sine Saloum\Reserve de Fathala\ Alain Coache Ultra Violet \ \\“ Macrocheilus \ bimaculatus \ (Dejean)” [h]\ “A.Serrano det. 2022” [t] [h].

Remarks. The species has a scattered distribution throughout Africa ( Basilewsky 1960; Lorenz 2021). The median lobe of all examined male specimens fit very well the known conformation of this structure for this species (see Serrano 2000). Macrocheilus bimaculatus is recorded for the first time for Central African Republic and Tanzania.

Male genitalia. Description and drawings of median lobe in lateral and dorsal views and left paramere shape were provided by Serrano (2000, Figs. 1 , 2 ).

Female genitalia ( Fig. 8a ). Gonocoxite 1 subtriangular; gonocoxite 2 largely sickle shaped, apex rounded; dorsal surface concave covered with numerous long and shorter setae, outer margin slightly expanded in the middle region, six setae inserted on a sub marginal longitudinal rib; ventral surface smooth, slightly convex.

Distribution. Angola, Central African Republic, Democratic Republic of the Congo, Ethiopia, Guinea-Bissau, Kenya, Republic of Rwanda, Senegal, Tanzania.

Figures

FIGURE 1. Habitus of Macrocheilus (dorsal view). a, M. assmanni n. sp. (holotype); b, M. kudrnai n. sp. (holotype); c, M. philippeorum n. sp. (holotype); d, M. schuelei n. sp. (holotype); e, M. allardi (holotype, plus labels); f, M. alluaudi (holotype, plus labels); g, M. alluaudi, CON (PSC); h, M. basilewskyi (holotype, plus labels); i, M. biguttatus (MRAC, plus labels).

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 5. Habitus of Macrocheilus (dorsal view). a, M. biguttatus, SEN (ACC); b, M. bimaculatus, GBI (ASC); c, M. clasispilus (holotype, plus labels); d, M. diplospilus (holotype, plus labels); e, M. dorsalis, ZAM (TAC); f, M. dorsiger, BFO (PSC); g, M. elegantulus (holotype, plus labels); h, M. hybridus, ZIM (TAC); i, M. labrosus, RCA (PSC).

FIGURE 8. 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. bimaculatus, GBI (ASC); b, M. clasispilus, RCI (ACC); c, M. hybridus, ZIM (TAC); d, M. labrosus, RCI (PSC).