Macrocheilus labrosus (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 : 17

publication ID	https://doi.org/ 10.11646/zootaxa.5256.1.1
publication LSID	lsid:zoobank.org:pub:CE0AC7CD-E55D-484C-9346-86F16C985DBE
DOI	https://doi.org/10.5281/zenodo.7745370
persistent identifier	https://treatment.plazi.org/id/AE0487C8-F523-FFC8-0986-A27265E8F83D
treatment provided by	Plazi
scientific name	Macrocheilus labrosus (Dejean, 1831)
status

Treatment

Macrocheilus labrosus (Dejean, 1831) View in CoL

Figs. 5i View FIGURE 5 , 6e View FIGURE 6 , 7c View FIGURE 7 , 8d View FIGURE 8

Studied material. 1 male: “Lanto\Toumodi\Côte d`Ivoire”\\ “ 25.VIII.1971 \Col. Chemin”\\ “ Macrocheilus \ labrosus \Dej.” [h] \ “Ch. Lecordier det.” [t]; 1 female: “ Ivory Coast V.2001 \ Touba\ Phillipe Moretto leg.” \\ “Macr-19” (yellow label)\\ “ Macrocheilus \ labrosus \ (Dejean,1831)” [h]\ “A.Serrano det. 2014” [t] [h]; 1 male: “ Burkina Faso: Comoé\ Forêt de Boulon, 270 m \ 10º 16′39″ N 04º 29′ 28″ O \ 7.VII.2006, zone Soudanienne\ forêt galerie, piège lumineux\ F. & S. Génier 2006-09” \\ “Collection\ Th. Assmann\ Bleckede, CAB” (yellow label)\\ “ Macrocheilus \ labrosus \ (Dejean, 1831)” [h]\ “A.Serrano det. 2014” [t] [h]; 1 male: “Central African Rep.\ Ouaka Prov. \ 75 km E Sibut\ 22– 23.05.2009 500 m \ A. Kudrna Jr. LGT.” \\ “Macr-18” (yellow label)\\ “ Macrocheilus \ labrosus \ (Dejean, 1831)” [h]\ “A.Serrano det. 2014” [t] [h]; 1 male: Central African Rep.\ Ombella—Mpoko Prov.\ Damara—Bouca road 95 km \ SW Sibut ( GPS), 24– 25.05.2009 \ 600 m. A. Kudrna Jr. LGT.” \\ “Macr-17” (yellow label)\\ “ Macrocheilus \ labrosus \ (Dejean, 1831)” [h]\ A.Serrano det. 2014” [h] [t]; 1 male: “ Central African Republic \ Ombella–Mpoko prov. 75 km NNE Bangui \ Bagbara—Oumba road 5–11.4+26–\ 29.4. 2010, 430 m Arnost Kudrna jr. leg.” \\ “Macr-20” (yellow label)\\ “ Macrocheilus \ labrosus \ (Dejean, 1831)” [h]\ “A.Serrano det. 2014” [t] [h]; 1 male: “Afrique de L`Ouest\ Benin 27. V.2013 \Penessoulou Ultra Violet\Foret de Penelan\Alain Coache Rec”\\ Macrocheilus \ labrosus \ (Dejean, 1831)” [h]\ “A.Serrano det. 2022” [t] [h]; “ 3 males: “Côte d` Ivoire, P.N. de Tai, C. R.E.\ 5º 49′ 59.8″ N 07º 20′ 32.0″ O, 147 m. \ 22.III.–4.IV.2017, piège UV.\ P. Moretto leg. 23, 23, 27” \\ “255, 256, 333\ Collection P. Scḩle, Herrenberg\ Tai Pijekt 2017” (white labels)\\ “ Macrocheilus \ labrosus \ (Dejean, 1831)” [h]\ “A.Serrano det. 2021” [t] [h]; 2 males: “Côte d` Ivoire, P.N. de Tai, C. R.E.\ 5º 49′ 59.8″ N 07º 20′ 32.0″ O, 147 m. \ 2–3.IV.2017, piège UV.\ P. Moretto leg. -32-” \\ “257, 258\ Collection P. Scḩle, Herrenberg\ Tai Pijekt 2017” \\ “ Macrocheilus \ labrosus \ (Dejean,1831)” [h]\ “A.Serrano det. 2021” [t] [h]; 1 male: “ GUINEA —Şd Nzérékoré, Nimba Mts. Ziela Station, 545m leg. G. Petranyi IX–X.2017 ”\\ PSC; 1 male: “SE. GUINEA \Nimba Mts. Ziela St., 545m IX—beginning X.2017 \G. Petranyi” DWC; 1 male: “ CÔTE d’IVOIRE, Touba, Bié-masso, 441m, 1–5. V.2018, piège UV, zone de cultures P. Moretto leg.\\ PSC.

Remarks. The species is spread over western Africa from Senegal to Democratic Republic of the Congo ( Basilewsky 1960; Häckel & Farkač 2013). It is easily recognized and differentiated from the other species of the genus by the twisted barrel shape of the last article of maxillary palps plus the orange rounded spot in the end of the middle of the first half of elytra ( Fig. 5i View FIGURE 5 ). Macrocheilus alluaudi presents the same shape of the last maxillary palpomere, but not the orange rounded spot in the elytra, which is totally black (see also the remarks on this species). The study of males and one female allowed the description of both genitalia for the first time. Macrocheilus labrosus is recorded for Burkina Faso and Central African Republic for the first time.

Male genitalia ( Fig. 7c View FIGURE 7 ). Median lobe long and straight, constricted between basal bulb and shaft, apex largely rounded (dorsal view), straight (lateral view), ostium with one pair of large scaled and slightly sclerotized stripes on dorsum, bending downwards and backwards, increasing sclerotization and ending in a plate directed upwards; left paramere large and rounded, without any distal or marginal tooth.

Female genitalia ( Fig. 8d View FIGURE 8 ). Gonocoxite 1 subtriangular; gonocoxite 2 very largely sickle shaped, apex acuminate-rounded; dorsal surface concave, almost all covered with numerous setae, several setae inserted on an outer sub marginal longitudinal rib, subapical inner margin with five setae; ventral surface convex, smooth.

Distribution: Benin, Burkina Faso, Central African Republic, Congo (Brazzaville), Democratic Republic of the Congo, Guinea, Guinea-Bissau, Republic of Ivory Coast, Senegal, Sierra Leone.