Octavius woodbushensis Janák sp. nov.

Figs. 72–76, 93–95

Type locality. South Africa, Limpopo, Woodbush Forest Reserve, 23°50.1'S 29°59.25'E.

Type material (5 specimens). Holotype ♂: “RSA, Limpopo 29.xi.2023 / 23°50.25'S 29°59.6'E / Woodbush Forest Reserve / 1560m, J. Janák lgt.”, “Berlese extraction / leaf & log litter / sifting”, “HOLOTYPUS Octavius woodbushensis sp. nov. J. Janák det. 2025” (TMSA) . Paratypes: 4 ♀: same data as the holotype (JJRC). All paratypes with additional labels: “ PARATYPUS Octavius woodbushensis sp. nov. J. Janák det. 2025”.

Description. Body length 1.2–1.3 mm (M 1.3 mm, HT 1.3 mm), forebody length 0.5 mm (M 0.5 mm, HT 0.5 mm). Microphthalmous, apterous, rusty, head, pronotum and elytra dull, abdomen moderately shiny (Fig. 72).

Head (Fig. 72) almost as broad as pronotum (R 0.98), eyes extremely small, temples about 7–10 times as long as eyes (R 7.50–10.43, M 9.34, HT 10.00), sides of head slightly rounded, slightly widened behind eyes to maximal width, then moderately narrowed towards posterior angles, posterior angles angular, median impression on disc deep and long, lateral parts of head finely granulose, median part densely, deeply, finely reticulate.

Pronotum (Fig. 72) very slightly broader than long (R 1.02–1.08, M 1.06, HT 1.02), strongly narrowed posteriorly; anterior angles rounded, dorsal impressions deep, transverse impression deep, lateral impressions deep, not delimited by sharp longitudinal ridge laterally; lateral parts beside lateral impressions moderately densely granulose, remainder of surface very densely, deeply, finely reticulate.

Elytra (Fig. 72) subquadrate, much broader than long (R 1.27–1.40, M 1.32, HT 1.31), with two sharp longitudinal ridges laterally; between latter and suture with two longitudinal impressions, densely and moderately finely reticulate and sparsely shortly setose.

Abdomen subparallel, slightly widened to segment VI, with one paratergite and microsculpture consisting of triangular or rhomboid field, finely setose.

Male. Sternite VIII shallowly emarginate in posterior tenth (Fig. 75), sternite IX as in Fig. 76. Aedeagus asymmetrical, small (0.22 mm) and narrow, with apically hook-shaped narrow projection; parameres almost reaching median lobe, with two long setae in middle part, 3–4 setae in apical part and 2 setae before middle (Fig. 74).

Differential diagnosis. Octavius woodbushensis Janák, sp. nov. belongs among species with very small eyes, with temples at about 7–10 times as long as eyes, with the head not or at most slightly widened posteriorly, with very small body and the disc of the head with deep and long median impression. In the most recent key of South African Octavius (Janák 2014) is to be arranged at the couplet 100 (99) near O. ocellifer Puthz, 2006, but it differs from this species by much smaller body, still smaller eyes, shallower dorsal impression on head and by different shape of aedeagus.

Derivatio nominis. The name of the species refers to the type locality.

Distribution. Octavius woodbushensis Janák, sp. nov. is currently recorded only from the Woodbush Forest Reserve, Limpopo Province, South Africa (Fig. 95).

Bionomics. All specimens were collected in siftings of forest litter in an indigenous forest at the elevation of about 1560 m a.s.l. with the abundance of 0.6 specimens per kg of sifted material (Figs. 93–94).