Konradus actinus ( Bernhauer, 1917 ), 2025

Chani-Posse, Mariana Raquel, Rodríguez-Melgarejo, Maryzender Erceliz & Ramírez-Salamanca, José Manuel, 2025, Systematics and phylogeny of the Andean genera Konradus Chani-Posse & Ramírez-Salamanca and Yuracarus gen. nov. (Coleoptera: Staphylinidae), Arthropod Systematics & Phylogeny 83, pp. 331-352 : 331-352

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 ).

Figures

Figure 1. Type material. A, B Philonthus actinus Bernhauer and labels (HT, male) [FMNH ©]; C, D Philonthus diamantinus Bernhauer and labels (HT, male) [FMNH ©]. Scale bar: 4 mm.

Figure 5. Konradus actinus (Bernhauer): A male sternum 8; B sternum 9; C female tergum 8; D female tergum 10. Konradus trescrucensis sp. nov.: E sternum 9. Konradus cuscensis sp. nov: F male tergum 8; G sternum 9; H male tergum 10; I gonocoxites of female genital segment; J accessory sclerite. Yuracarus napoensis sp. nov.: K male sternum 8; L sternum 9. Yuracarus yunguensis sp. nov.: M sternum 9; N male tergum 10; O gonocoxites of female genital segment; P female tergum 10. Yuracarus cosnipatensis: Q female tergum 8. Yuracarus diamantinus (Bernhauer): R female tergum 10; S gonocoxites of female genital segment; T accessory sclerite. Scale bars: 0.5 mm (A – I, K – S); 0.2 mm (J, T).

Figure 6. Aedeagus, dorsal and lateral views: A Konradus actinus (Bernhauer), B Konradus cuscensis sp. nov., C Konradus trescrucensis sp. nov., D Yuracarus diamantinus (Bernhauer), E Yuracarus yunguensis sp. nov., F Yuracarus cosnipatensis sp. nov., G Yuracarus napoensis sp. nov. Scale bars: 0.5 mm.

Figure 7. Distribution map for the species of Konradus Chani-Posse & Ramírez-Salamanca and Yuracarus gen. nov.

Figure 8. Phylogenetic reconstructions indicating relationships of Konradus Chani-Posse & Ramírez-Salamanca and Yuracarus gen. nov. within the Andean clade: A most parsimonious tree with black circles as exclusive (non-homoplastic) synapomorphies and white circles as non-exclusive (homoplastic) synapomorphies. Numbers in bold below the branches are absolute Bremer support values; B maximum Likelihood tree with support values SH-aLRT / UFB; C fifty percent majority consensus tree with posterior probabilities.