Quedionuchus yunnanensis Brunke, 2020

Brunke, A. J., Salnitska, M., Hansen, A. K., Zmudzinska, A., Smetana, A., Buffam, J. & Solodovnikov, A., 2020, Are subcortical rove beetles truly Holarctic? An integrative taxonomic revision of north temperate Quedionuchus (Coleoptera: Staphylinidae: Staphylininae), Organisms Diversity & Evolution (New York, N. Y.) 20 (1), pp. 77-116 : 92

Quedionuchus yunnanensis Brunke , sp. nov.

urn:lsid:zoobank.org:act:700C6FA5-A850-44B2-B5DC-F5348E7EDC45

Fig. 3c , 5n and 8a (map)

Type locality: China, Yunnan: Haba Shan.

Type material. Holotype (male, cHay): CHINA — YUNNAN HABASHAN — Habashan Mts. , 12.– 16.6.2004, alt. 3500– 4000 m, 27 19’N, 100 08’E, lgt. Fouqué R. +H. (WGS 84)/ AJB0001014/ Quedionuchus yunnanensis HOLOTYPE des. Brunke 2019 [printed red label]

Paratype: CHINA: Yunnan: Haba Shan , 27.33 100.153, 2800–3150 m, Bečvar S., & Fouque, R. &H., 5.VI– 13.VI.2002 (1, cHay). With label: Quedionuchus yunnanensis PARATYPE des. Brunke 2019.

Diagnosis. Easily recognized by the shape of the pronotum, which is distinctly transverse (as in Fig. 3c ), and the mostly transverse waves of microsculpture on the head and pronotum. It is the only species of the genus in Yunnan, China.

Redescription. Measurements ♂ (n = 1): HW/HL 1.40; PW/ PL 1.20; EW/EL 1.09; ESut/PL 0.90; PW/HW 0.98; forebody length 2.53 mm.

Measurements ♀ (n = 1): HW/HL 1.36; PW/PL 1.16; EW/ EL 1.06; ESut/PL 0.93; PW/HW 0.97; forebody length 2.62 mm.

Similar to Q. reitterianus and differing only in the following: body darker, pronotum not appreciably paler than head, antennomeres mostly dark brown, elytral markings smaller, occupying only basal third of disc, antennae slightly shorter, antennomeres 1–3 elongate, 4 quadrate, 5–10 increasingly transverse, pronotum distinctly transverse, male sternite IX with broader apex, median lobe in lateral view with subapical tooth projecting, acute, with longer constricted portion basad of tooth ( Fig. 5n ).

Distribution. Known only from Haba Shan in Yunnan, China but probably widely distributed in that province at higher elevations.

Bionomics. The holotype and paratype were collected at elevations from 2800–4000 m and are probably restricted to high elevation conifer forests.

Etymology. The species epithet is the name of the Chinese province Yunnan, the type locality and the suffix -ensis, denoting the place of origin.

Figures

Fig. 3 Dorsal habitus of: Quedionuchus armipes (Sharp) (a), Q. reitterianus (Bernhauer) (b), Q. yunnanensis (c), and Q. longipennis (d–f), (three colour morphs). Photo of Q. armipes by K.V. Makarov

Fig. 5 Quedionuchus samuraicus (Bernhauer and Schubert) (a–d), Q. deceptor Brunke (e–h), Q. caucasicus Brunke (i–i), Q. reitterianus (Bernhauer) (m, o, p), and Q. yunnanensis Brunke (N). Aedeagus in

Fig. 8 Distribution of: Quedionuchus glaber (O. Müller) (black circles), Q. caucasicus Brunke (blue square), Q. reitterianus (Bernhauer) (yellow triangle) and Q. yunnanensis Brunke (pink star) (a); Q. deceptor Brunke (black squares) and Q. samuraicus (Bernhauer and Schubert) (pink circles) (b)