Domene (Macromene) chenpengi Li et al., 1990

Feldmann, Benedikt, Peng, Zhong & Li, Li-Zhen, 2014, On the Domene species of China, with descriptions of four new species (Coleoptera, Staphylinidae), ZooKeys 456, pp. 109-138 : 111-114

Taxon classification Animalia Coleoptera Staphylinidae

Domene (Macromene) chenpengi Li et al., 1990 Figs 1, 2A, 3

Domene chenpengi Li et al., 1990: 66.

Domene (Macromene) dersuuzalai Gusarov, 1992: 21; syn. n.

Type material.

Neotype ♂, present designation: "China: Beijing, ca. 1400 m, Dongling Mts, 15.Vi.2001, Xiaolongmen, Liu Lang Yu / N39°97, E115°43 [sic], Mixed woodland litter, Leg. J. Cooter + P. Hlavá [sic] / Neotypus ♂ Domene chenpengi Li desig. B. Feldmann & Z. Peng 2014 / Domene chenpengi Li, det. B. Feldmann 2014" (MNHUB).

Comment

The original description is based on a single male specimen from Chang Chun [ca. 43°45'N, 125°27'E], Jing Yue, collected on 30.VII.1985 by Peng Chen ( Li et al. 1990). Inquiries into the whereabouts of the holotype at the Northeast Normal University, where the holotype should be deposited, yielded no results. It was looked for in the respective collection, but not found (personal communication Xiu-Qing Yin, one of the authors in Li et al. 1990 and director of the biogeographical office of Northeast Normal University, e-mail 5 May, 2014; personal communication Jing-Ke Li, author of Domene chenpengi and guest professor of the Harbin Normal University, e-mail 5 May, 2014). Thus, the type specimen must be regarded as lost. The insufficient description of Domene chenpengi , which fails to provide any illustration whatsoever, is in agreement with examined material previously identified as Domene dersuuzalai from the Russian Far East and China, particularly regarding the habitus and the characteristic shape of the male sternite VIII with its shallow posterior excision. Moreover, the type locality of Domene chenpengi accords with the known distribution of Domene dersuuzalai . In the interest of stability of nomenclature, a neotype designation is deemed necessary to stabilize the present interpretation of Domene chenpengi and the synonymy with Domene dersuuzalai . To this end, a male from the Dongling mountains in Beijing, a locality reasonably close to the type locality, is designated as the neotype. Based on the detailed description of Domene dersuuzalai ( Gusarov 1992), the species is doubtlessly conspecific with the neotype of Domene chenpengi ; hence the synonymy proposed above.

Material examined

(60 exs.). Russian Far East: Primorskiy Kray: 2 exs., Vladivostok env., Sedanka, 28.VII.1992, leg. Beloborodov (NHMB, cFel); 3 exs., Vladivostok, 11.VII.1993, leg. Pütz & Wrase (cSch); 6 exs., N Vladivostok, "Seitengraben des Parwaja Rjetschka Tales", 1918-1920, leg. Frieb (NHMW, cFel); 1 ex., Kamenushka, 14.-15.VII.1992, leg. Beloborodov (NHMB); 7 exs., Partisansky district, Alexeyevskiy khrebet, 20 km E Sergeyevka, forests near Andreyevka river, 400-800 m, 26.-29.VII.1993, leg. Pütz & Wrase (cSch, cFel); 1 ex., S Artyom town, Ozernyy Kluytch river, 100-300 m, 10.V.-5.VI.2002, leg. Plutenko (cSch); 2 exs., Lazovskiy reserve, 9 km SE Kievka, lodge Petrova env., 3.-8.VI.1994, leg. Sundukov ( cPüt); 1 ex., same data, but 9.-13.VI.1995 ( cPüt); 1 ex., Lazovskiy district, Kovarinovo, 5 km NE Lazo, spring valley, 1.-5.VI.1995, leg. Sundukov (cFel); 1 ex., Lazovskiy reserve, Kordon Amerika, 134°03'01"E, 43°16'16"N, 14.-17.V.1999, leg. Sundukov (cSch); 2 exs., Lazovskiy reserve, Kordon Amerika, 18.-19.VI.1997, leg. Sundukov (cSch); 1 ex., Lazovskiy reserve, Kordon Petrova, 133°47'55"E, 42°52'14"N, 19.-20.IX.1999, leg. Sundukov (cSch); 1 ex., Lazovskiy reserve, Kordon Proselochny, 134°07'43"E, 43°00'34"N, 4.-6.X.1999, leg. Sundukov (cSch); 3 exs., Sikhote-Alin reserve, Jasnaya estuary, 26.VI.-4.VII.1998, leg. Sundukov (cAss, cSch); 1 ex., Siniy khrebet, 4 km E Evseevki, 7.-9.VIII.1999, leg. Shavrin (cSch); 1♂, 2 ♀♀ [identified by Gusarov 1995 as Domene dersuuzalai ], Arsenev env., 27.V.-5.VII.1991, leg. Sausa (NHMW). Khabarovskiy Kray: 3 exs., SE Boitsovo, 12 km NE Bikin, 250-350 m, 26.V.-4.VI.1990, leg. Schawaller (cSch). Sakhalin: 5 exs., Moneron Island, 15.VI.-6.VII.2002, leg. Plutenko (cSch, cFel). China: Beijing: 1 ♂, 5 ♀♀, Xiaolongmen, Yan Shan, Dongling Mts, 1400 m, 15.-16.VI.2001, leg. Hlavač & Cooter (cAss, cSch, cFel); 2 ♂♂, Xiaolongmen, Liu Lang Yu, Dongling Mts, 39°58'N, 115°26'E, ca. 1400 m, under fungoid Juglans bark, 15.VI.2001, leg. Cooter & Hlavač (cRou); 1 ♀, Xiaolongmen, Liu Lang Yu, Dongling Mts, 39°58'N, 115°26'E, ca. 1400 m, mixed forest litter, 15.VI.2001, leg. Cooter & Hlavač (cRou); 2 ♂♂, 1 ♀, Xiaolongmen, Mei Yao Yu, Dongling Mts, 39°58'N, 115°26'E, ca. 1400 m, mixed forest litter, 16.VI.2001, leg. Cooter & Hlavač (cRou, cFel); 1 ♂, 2 ♀♀, Miyun County, Wulin Shan, 40°36'N, 117°23'E, 750-850 m, 8.-9.VII.2006, leg. Shen & Tang (SNUC). South Korea: 1 ♂, Gangwon-do, Seorak-san, 1.5 km S Han-gyeryeong pass rest station, roadside forest, 38°05'26"N, 128°24'03"E, 790 m, from wet, fungusy leaf litter, under trunk, rocks, sifted, 9.IX.2010, leg. Makranczy & al. (HNHM).

Redescription.

Measurements (in mm) and ratios: TL 7.15-7.60, FL 3.80-3.95, HL 1.1-1.15, HW 1.00-1.08, AnL 2.55-2.65, NW 0.35-0.38, PL 1.19-1.23, PW 0.95-1.03, EL 0.98-1.03, EW 1.03-1.05, TiL 1.20-1.25, TaL 0.90-0.98, AW 1.08-1.13, AL 0.85-0.90, HL/HW 1.05-1.13, HW/PW 1.02-1.08, HL/PL 0.90-0.95, NW/HW 0.35-0.36, PL/PW 1.17-1.25, EL/PL 0.82-0.85.

Habitus as in Fig. 2A. Head and pronotum blackish brown; elytra brownish with anterior and posterior portions more or less extensively reddish brown; abdomen brownish; legs yellowish brown, except for the slightly paler tarsi; antennae light brown to yellowish brown.

Head orbicular, widest behind eyes; punctation (Fig. 3A) fine and very dense. All antennomeres longer than broad; antennomeres IV–X of equal length; antennomere I 1.9 times, II 1.2 times, III 1.3 times, XI 1.3 times as long as IV. Maxillary palpus slender, preapical joint about 2.5 times as long as broad.

Pronotum about as broad as head, widest in anterior third; lateral margins slightly convex in dorsal view; punctation (Fig. 3B) very fine with interstices forming narrow, longitudinal ridges.

Elytra without distinct longitudinal ridges; disc often more or less impressed; suture elevated in posterior three-fourths; macropunctation coarse, more or less dense and irregular on disc, interstices with shallow and irregular micropunctation; in lateral and posterior portions with distinctly finer and denser punctation. Hind wings present. Protarsomeres I–IV moderately dilated.

Abdomen with fine and very dense punctation on tergites III–VIII; interstices with microreticulation; tergite VIII more or less obtusely triangularly produced posteriorly (Fig. 3C); posterior margin of tergite VII with palisade fringe.

Male. Sternites III–VI unmodified; sternite VII (Fig. 3F) distinctly transverse, with shallow postero-median impression, this impression with a few modified short and black setae posteriorly; sternite VIII (Fig. 3G) transverse, with pronounced impression posteriorly, this impression with distinctly modified short and stout black setae, posterior excision very small; aedeagus as in Figs 3 H–J, ventral process stout and apically moderately acute in lateral view; apical portion of dorsal fig long and distinctly sclerotized, basal portion short.

Female. Posterior margin of sternite VIII (Fig. 3D) in the middle with shallow concave excision; genital segments with distinctly sclerotized structure (Fig. 3E).

Comparative notes.

The similar external morphology, the similar chaetotaxy and shape of the male sternites VII and VIII, and especially the similar shape of the ventral process of the aedeagus suggest that Domene chenpengi is closely allied to Domene curtipennis from Japan. For illustrations of Domene curtipennis see Gusarov (1992: figure 4). Besides its conspicuous male sexual characters, Domene chenpengi is distinguished from the Chinese species of the Domene malaisei and Domene scabripennis groups and from Domene procera by its smaller size alone, and from species of the Domene reitteri group by its coarser and less densely punctate the elytra.

Distribution and natural history.

The currently known distribution ranges from the Russian Far East and Northern China (Beijing, Jilin) to South Korea. The specimens were partly sifted from leaf litter in mixed forest habitats or found under bark and rocks. The elevations range from 100 up to 1400 m.