Omophron (Omophron) clavareaui Rousseau, 1900: 412

Anichtchenko, Alexander & Valainis, Uldis, 2023, Revision of the subgenus Omophron (s. str.) Latreille, 1802 (Coleoptera: Carabidae Omophron) of the Afrotropical region, Zootaxa 5284 (2), pp. 201-246 : 211-213

Omophron (Omophron) clavareaui Rousseau, 1900: 412

Loc. Typ.: Léopoldville [Kinshasa].

Material examined. CHAD: Rives du Moyen Chari , Gory-Domraou, Mission Chari-Chad , 1904, Decorse leg. [9.196254, 18.366246] (1 ♀, MNHN) , Rives du Moyen Chari , Mandjaffa, Mission Chari-Chad , 1904, Decorse leg. [11.182631, 15.414086] ( MNHN) . DEMOCRATIC REPUBLIC OF CONGO: Leopoldville, juli juin 1899, E. Clavareau [-4.318447, 15.345390] (2 ♀, syntype, ISNB) ; Tanganyka, Moero, Niunzu , 1935, H. De Saeger leg. [- 5.861334, 28.144550] (1 ♀, comp. Typ. Basilewsky, MRAC) ; Bundundu, Kuamouth , 02.01.1922, Schouteden leg. [-3.273766, 17.379498] (1 ♀, MRAC) . TANZANIA: S Tanzania, Morogoro region, E of Mikumi , S 07°23’700’’, E 037°00’080’’, 522m, 10–14.xii.2010, leg. M., M. & M. Hiermeier [-7.384114, 37.050259] (1 ♀, DUBC) . ZAMBIA: Kashitu, 07.1915, Dollman leg. [-13.736257, 28.646550] (1 ♁, ETHZ) ; NW Rhodesia, Namwala , Dollman leg. [-15.999410, 26.138941] (11 ♁, 16 ♀, BMNH) ; N Rhodesia, N’Changa , 1931, Macnamara leg. [-12.521129, 27.831529] (1 ♀, BMNH) ; NW Rhodesia, Kashitu , 09.1915, Dollman leg. [-13.736257, 28.646550] (1 ♁, 1 ♀, BMNH) ; NW Rhodesia, Kashitu , N. of. Broken Hill , 09.1914, Dollman leg. [-13.738068, 28.643003] (1 ♁, BMNH) ; Western Zambia, 30 km NW Sesheke, S17°17´21 E24°09´08, 13.01.2010, P. Schüle leg. [-17.283746, 24.150543] (1 ♀, PSC) ; Central Zambia, 140 km NE Kapiri Mposhi, 40 km SW Serenje , 30.11.2004, Snižek & Tichy leg. [- 13.387240, 29.877297] (1 ♀, PSC) ; Zambia, Western Prov. , 13km SW Lusu, 1025m, S17°16’04’’ E24°00’07’’, S. Rojkoff leg. ( SRC) . ZIMBABWE: S. Rhodesia, Filabusi , 11.1948 [-20.546091, 29.275492] (1 ♁, 3 ♀, MNHN) .

Differential diagnosis. Similar to O. minutum and O. secundum sp. n. but differ from the latter in having deeper elytral striae, more convex intervals, and more densely punctate pronotum and head, and from the former in having completely reduced elytral pattern, less convex intervals on the disc of elytra, and elongate punctures on the pronotum.

Redescription. Body length 3.84–4.25 mm; width 2.89–3.23 mm. Habitus ( Fig. 17 ).

Color: head, pronotum, elytra, and mandibles dark brown. Legs, antennae, mouth parts and lateral elytral pattern brownish yellow. Labrum, sides of pronotum and external interval of elytra of pearl color. Venter brown.

Head fairly flat, coarsely punctate laterally and posteriorly. Subocular ridge well developed, curved upwards and slightly rounded. Clypeus moderately punctate near hind margin, bisetose. Labrum with almost straight anterior margin, with moderately rounded sides and six setae. Antennal scape unisetose at apex, antennomeres 3 and 4 smooth, with only some longer setae near the apex. Antennomeres 5–11 pubescent. Medial side of fourth palpomere of maxillary palpi distinctly curved, last palpomere with acute apex. Gula smooth, gena rugose and coarsely punctate. HW: 1.36 –1.64 mm.

Pronotum (PL: 1.15–1.24 mm, PW: 2.47–2.74 mm.) distinctly convex, base bisinuated on each side, sides evenly rounded, with wide border, without pattern. Anterior angles acute and prominent. Disc of pronotum evenly coarsely and densely punctate, punctures slightly elongate. Median impression obsolete. Prosternum and proepisternum coarsely and densely punctate, proepipleura with 2–3 small punctures in anterior half.

Elytra (EL: 2.31–2.71 mm, EW: 2.89–3.23 mm.) very convex, sides strongly rounded, with border gradually narrowed from shoulders to apices. Elytral pattern barely visible, consisting of diffused brown lateral band. Elytra with 15 striae. Striae densely punctate, punctures moderately deep. Intervals 1–5 almost flat on disc, lateral intervals clearly convex.

Venter ( Fig. 19 ). Mesepisternum punctate. Metasternum sparsely punctate on center, metepisternum and metepimeron coarsely and densely punctate, elytral epipleura crumpled and irregularly punctate. Ventrites IV and V punctate laterally and with row of punctures along transverse furrow; ventrite VI with large and coarse punctures throughout. Metacoxa bisetose, with 8–9 additional punctures.

Aedeagus ( Fig. 13 ), ventral side of median lobe slightly and evenly arcuate from base to apex. Apical lamella in dorsal view wide and widely rounded. Apex strongly downturned.

Distribution. Chad, Democratic Republic of Congo, Tanzania, Zambia, Zimbabwe (Map. 2).

References: Csiki 1927; Deleve 1924; Rousseau 1900.

Figures

FIGURES 17–18. Habitus of Omophron “minutum”—species group, dorsal view: 17—O. (O.) clavareaui; 18—O. (O) secundum sp. n. (Holotype). Scale bar 5 mm.

FIGURES 19–20. Habitus of Omophron “minutum”—species group, ventral view: 19—O. (O.) clavareaui; 20—O. (O) secundum sp. n. (Holotype). Scale bar 5 mm.

FIGURES 11–14. Aedeagus structure. a—apex in dorsal view, b—right lateral view: 11—O. (O.) minutum (Senegal, Khayes); 12—O. (O.) riedeli (Zimbabwe, Sebakwe); 13—O. (O.) clavareaui; 14—O. (O.) muellerae sp. n. Scale bar 1 mm.