Omophron (Omophron) occultum, Anichtchenko & Valainis, 2023

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 : 241-242

Omophron (Omophron) occultum sp. n.

Material examined. Holotype ♁, „Garies, Namaqualand”, „SAM-COL-A006499” [-30.542586, 17.994692] ( SAM).

Differential diagnosis. Members of this species are similar in size and overall appearance to those of O. capicola , but they are easily distinguished in having convex elytral intervals and a clypeus with a transverse furrow near anterior margin.

Description. Body length 6.8 mm; width 4.44 mm. Habitus ( Fig. 88 ). Color: head, pronotum, elytra, legs, and antennae pale brownish yellow. Dark pattern on elytra, head, and pronotum green. Mandibles light brown, their apical parts dark brown. Venter, excluding epipleura, dark brown; proepipleura, lateral parts of prosternum, elytral epipleura, and ventrite VI apically paler.

Head fairly flat, coarsely punctate laterally and posteriorly, smooth around clypeus and on the middle of the frons, with a lateral triangular green patch on each side. Pale pattern on head V-shaped and well-developed. Subocular ridge well developed, curved upwards and slightly rounded. Clypeus smooth and bisetose, anterior margin formed by two straight lines meeting at an obtuse angle. Labrum with bisinuate anterior margin, with moderately rounded sides and six setae. Antennal scape unisetose at apex, antenomeres 3 and 4 smooth, with only some longer setae around the apex, 5–11 pubescent. Gena coarsely but sparsely punctate. HW: 2.67–2.83 mm.

Pronotum (PL: 1.93–2.19 mm, PW: 3.61–4.17 mm.) moderately convex, base bisinuate on each side, sides evenly rounded, with narrow border. Anterior angles slightly acute, raised anteriorly. Dark green pattern broad, extended from anterior to posterior margin, only lateral margins yellow. Pronotum densely and coarsely punctate on base and apex, sparsely punctate on disc, almost smooth on sides. Median impression shallow. Prosternum coarsely but sparsely punctate, proepisternum, with some sparse punctures, proepipleura coarsely but sparsely punctate throughout.

Elytra (EL: 4.37–4.62 mm, EW: 4.28–4.46 mm.) convex, oval; with 15 striae. Striae deep, strongly punctate on the disc. Intervals convex, slightly flattened on intervals I–IV. Green pattern diffused, consisting of a basal band, a wide median band, narrowed apically to suture, and a posterior transverse fascia.

Figures

FIGURES 86–88. Habitus, dorsal view: 86—O. (O.) capicola; 87—O. (O.) capicola oneili; 88—O. (O.) occultum sp. n. Scale bar 5 mm.