Konradus actinus (Bernhauer, 1917) comb. nov.

Figures 1 A, B, 5 A – D, 6 A, 7, 8

Philonthus actinus Bernhauer 1917: 103, attributed to Fauvel in litteris; Scheerpeltz 1933: 1330 (catalog); Blackwelder 1944: 132 (list); Herman 2001: 2737 (catalog); Chani-Posse et al. 2018: 59 (checklist, “not Philonthus ”).

Type material.

Lectotype ♂, here designated (Fig. 1 A, B), with labels: [old white label with Bernhauer’s handwriting] “ actinus Bernh. / W. Ent. Zeit. 1917 / p. 103 ”, [old white label printed] “ Yuracaris ”, [old white label printed] “ Bolivien ”, [old white label with Bernhauer’s handwriting] “ actinus fvl. i. l. / Mus. Hamburg ”, [old white label printed] “ Fauvel det. ”, [yellow label with Bernhauer’s handwriting] “ actinus Brnh. / Typus ” [white label printed] “ Chicago NHMus / M. Bernhauer / Collection ”, [white label printed “ FMNHINS / 4229169 / FIELD MUSEUM / Pinned ”, [blue label printed] “ PHOTOGRAPHED / S. Ware 2022 / CIL Request ”, [red label] “ Lectotype Philonthus / actinus Bernhauer 1917 / des. Chani-Posse et al. 2025 ” (FMNH) . One paralectotype ♀ with same data, but yellow label with Bernhauer’s handwriting with “ actinus Brnh. / Cotypus ” (FMNH) .

Additional material examined.

(2 ♂, 2 ♀). BOLIVIA: Cochabamba, 70 km NE Cochabamba, 4.IV.1978, L. & C. W. O’ Brien & G. B. Marshall, 1 ♂ (FMNH) ; La Paz, Sorata, XI. 1984, L. E. Peña, 2800 m, 1 ♂, 2 ♀ (FMNH) .

Diagnosis.

Konradus actinus can be identified among other species of Konradus by the following combination of characters: antennomeres 7–8 elongate, the distance separating the medial interocular punctures on the frons 2.5 × distance separating the medial punctures from the lateral punctures, the head as wide as pronotum at its widest point, and the pronotum parallel-sided.

Redescription.

Body length 9.4–9.8 mm (5.4–5.6 mm, abdomen excluded), body overall scarcely setose, almost glabrous. — Colouration: body metallic green, with last abdominal segments metallic purple to greenish purple. — Head: moderately to slightly longer than wide (HW / HL = 0.8–0.9), as wide as pronotum at widest point (HW / PW = 1.0); epicranium with medial interocular punctures separated by distance 2.5 × as large as distance separating medial punctures from lateral punctures. Eyes distinctly shorter than temples (EL / TL = 0.5–0.7) seen from above. Antennae with first antennomere distinctly shorter than second and third combined, third about 1.2–1.4 × as long as second, fourth-eighth longer than wide, ninth-tenth about as long as wide. Labial palpus with third palpomere 1.5 × as long as second. Maxillary palpus with fourth palpomere (apical) 1.6–1.8 × as long as third. Neck about 0.4–0.5 × as wide as head at widest point. — Pronotum: distinctly to moderately longer than wide (PW / PL = 0.7–0.8), dorsal rows of punctures each with 5 punctures. Prosternum without distinct mid-longitudinal carina. — Legs: Mesotarsi about as long as mesotibiae, metatarsi about as long as metatibiae, first metatarsomere shorter than fifth (S 1 / S 5 = 0.7–0.8). — Elytra: at sides slightly longer than pronotum at midline (EtL / PL = 1.1). — Male sexual characters: Sternum 8 slightly emarginate medio-apically, emargination without semi-membranous extension (Fig. 5 A). Aedeagus with median lobe gradually narrowed from base to blunt, subacute apex, slightly constricted near paramere apex; internal sac with one pair of elongate, sclerotized structures (Fig. 6 A). — Female sexual characters: As described for genus (Fig. 5 C, D), accessory sclerite horseshoe-shaped.

Geographical distribution.

Konradus actinus is currently recorded only from the Tropical Andes of Bolivia, at elevations ranging from approximately 2000 m to 2800 m (Fig. 7).