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Research Article
New data on the subgenus Harpopaederus of the genus Paederus (Coleoptera, Staphylinidae, Paederinae) of mainland China
expand article infoZhong Peng, Li-Zhen Li, Mei-Jun Zhao
‡ Shanghai Normal University, Shanghai, China
Open Access

Abstract

Paederus (Harpopaederus) xui Peng & Li, sp. n. (Sichuan: Micang Shan) is described. Additional records of five Harpaederus species are reported. All of these species are illustrated.

Keywords

Coleoptera, Staphylinidae, Paederus, Harpopaederus, new species, new records, mainland China

Introduction

The widely distributed genus Paederus Fabricius, 1775 was previously represented in China by 39 species (Li et al. 2014; Peng et al. 2014), ten of which were placed in the subgenus Harpopaederus Scheerpeltz, 1957 (type species: Paederus schoenherri Czwalina, 1889): P. antennocinctus Willers, 2001 (Sichuan, Gansu), P. gottschei Kolbe, 1886 (Heilongjiang, Jilin; North Korea; South Korea; Russia), P. konfuzius Willers, 2001 (Shaanxi, Gansu, Sichuan), P. pseudobaudii Aleksandrov, 1934 (Heilongjiang), P. apfelsinicus Willers, 2001 (Hubei, Shaanxi), P. gracilacutus Li & Zhou, 2007 (Shaanxi, Gansu), P. lineodenticulatus Li & Zhou, 2007 (Sichuan), P. dangchangensis Li & Zhou, 2007 (Gansu), P. brevior Li, Solodovnikov & Zhou, 2014 (Shaanxi) and P. multidenticulatus Li, Solodovnikov & Zhou, 2014 (Hubei) (Li and Zhou 2007; Li et al. 2014; Smetana 2004; Willers 2001a, b).

In recent years numerous Harpopaederus specimens were collected during several field trips. Six species were identified, one of which is described for the first time.

Material and methods

The material treated in this study is deposited in the following collections:

SNUC Insect Collection of Shanghai Normal University, Shanghai

cAss private collection Volker Assing, Hannover

cSch private collection Michael Schülke, Berlin

The following abbreviations are used in the text, with all measurements in millimeters:

Body length (BL) from the anterior margin of the labrum to the abdominal apex; forebody length (FL) from the anterior margin of the labrum to the posterior margin of the elytra; head length (HL) from the anterior clypeal margin to the occipital constriction; head width (HW): maximum width of head; length of antenna (AnL); length of pronotum (PL) along midline; maximum width of pronotum (PW); elytral length (EL) at the suture from the apex of the scutellum to the posterior margin of the elytra (at the sutural angles); maximum width of the elytra (EW); maximum width of abdomen (AW); length of aedeagus (AL) from the apex of the dorsal plate to the base of the aedeagal capsule.

Results

Paederus (Harpopaederus) apfelsinicus Willers, 2001

Figs 1A, 2A, G–J

Material studied

China: Hubei: 1 ♀, Shennongjia, Xiaolongtan, 05.VIII.2002, Li & Tang leg. (SNUC).

Comment

The above specimen was collected near the type locality of this species. The female external and sexual characters are illustrated in Figs 1A, 2A, 2G–J. For illustrations of the male sexual characters see Willers (2001a).

Figure 1.

Habitus, A P. (Harpopaederus) apfelsinicus B P. (H.) brevior C P. (H.) gottschei D P. (H.) gracilacutus E P. (H.) konfuzius F P. (H.) xui. Scale bars: 2.0 mm.

Figure 2.

Antenna (AF) and Paederus apfelsinicus (GJ), A P. apfelsinicus B P. brevior C P. gottschei D P. gracilacutus E P. konfuzius F P. xui; G female labrum H female tergite VIII I female sternite VIII J female tergite IX. Scale bars: AF 1.0 mm; GJ 0.5 mm.

Paederus (Harpopaederus) brevior Li, Solodovnikov & Zhou, 2014

Figs 1B, 2B, 3

Material studied

China: Shaanxi: 4 ♂♂, 2 ♀♀, Ningshan Hsien, Huoditang, 33°26'N, 108°26'E, 1724 m, 24–25.V.2008, Huang & Xu leg. (SNUC); 1 ♂, 1 ♀, Zhouzhi Hsien, Houzhenzi, 33°51'N, 107°50'E, 1260 m, 05.V.2008, Huang & Xu leg. (SNUC); 1 ♂, 1 ♀, Ningshan Hsien, Huoditang, 33°26'N, 108°27'E, 1500–1700 m, 12.VII.2012, Yu-Hong Pan leg. (SNUC); 7 ♂♂, 3 ♀♀, Foping Hsien, Foping Nature Reserve, 33°38'N, 107°58'E, 1250–1400 m, 18.VII.2004, Hu, Tang & Zhu leg. (SNUC).

Comment

The original description of P. brevior is based on five type specimens from “Qinling Shan 6 km, E Xunyangba 1000–1300 m” (Li et al. 2014). The illustrations of the aedeagus provided in the original description leave no doubt that the above specimens are conspecific with the types. The external and sexual characters are illustrated in Figs 1B, 2B, 3.

Figure 3.

Paederus brevior. A male left mandible B male labrum C female labrum D male right mandible E female tergite VIII F female sternite VIII G female tergite IX H male tergite VIII I male sternite VIII J male sternite IX K aedeagus in ventral view L aedeagus in lateral view M aedeagus in dorsal view. Scale bars: 0.5 mm.

Paederus (Harpopaederus) gottschei Kolbe, 1886

Figs 1C, 2C, 4

Material studied

China: Jilin: 1 ♂, 2 ♀♀, Changbai Shan, 25.VII.2004, Li-Zhen Li leg. (SNUC).

Comment

The currently known distribution ranges from the Russian Far East, northern China (Heilongjiang, Jilin) to North and South Korea. The external and sexual characters are illustrated in Figs 1C, 2C, 4.

Figure 4.

Paederus gottschei. A male left mandible B male labrum C female labrum D male right mandible E female tergite VIII F female sternite VIII G female tergite IX H male tergite VIII I male sternite VIII J male sternite IX K aedeagus in ventral view L aedeagus in lateral view M aedeagus in dorsal view. Scale bars: 0.5 mm.

Paederus (Harpopaederus) gracilacutus Li & Zhou, 2007

Figs 1D, 2D, 5

Material studied

China: Shaanxi: 5 ♂♂, 1 ♀, Nanzheng Hsien, Liping National Forest Park, 35°50'N, 106°36'E, 1400–1600 m, 15.VII.2012, Chen, Li, Ma & Zhao leg. (SNUC); 4 ♂♂, 1 ♀, Zhouzhi Hsien, Houzhenzi, Sangongli Gou, 33°51'N, 107°49'E, 1336 m, 17–19.V.2008, Huang & Xu leg. (SNUC).

Comment

Although the original description is based exclusively on type specimens from Gansu, Li and Zhou (2007) repeatedly state in the text of the same article that the distribution also includes Shaanxi. The above material, whose identification is based on the illustrations provided in the original description, represents the first confirmed records from Shaanxi.

Figure 5.

Paederus gracilacutus. A male left mandible B male labrum C female labrum D male right mandible E female tergite VIII F female sternite VIII G female tergite IX H male tergite VIII I male sternite VIII J male sternite IX K aedeagus in ventral view L aedeagus in lateral view M aedeagus in dorsal view. Scale bars: 0.5 mm.

Paederus (Harpopaederus) konfuzius Willers, 2001

Figs 1E, 2E, 6

Material studied

China: Shaanxi: 6 ♂♂, Ningshaan Hsien, Pingheliang, 33°28'N, 108°29'E, 2100 m, 13.VII.2012, Chen, Li, Ma & Zhao leg. (SNUC); 1 ♂, 4 ♀♀, Zhouzhi Hsien, Daoban, 33°44'N, 107°58'E, 1900 m, 04.V.2008, Huang & Xu leg. (SNUC); 1 ♂, 1 ♀, Zhouzhi Hsien, Houzhenzi, Qinlingliangxia, 33°49'N, 107°44'E, 1820 m, 18.V.2008, Huang & Xu leg. (SNUC); 3 ♀♀, Mei Hsien, Taibai Shan, 34°01'N, 107°51'E, 1853 m, 22–23.V.2008, Huang & Xu leg. (SNUC).

Comment

The original description is based on 13 type specimens from the Qinling Shan, Shaanxi (Willers 2001b). Li and Zhou (2007) recorded this species from Gansu and Sichuan, but did not specify the localities.

Figure 6.

Paederus konfuzius. A male left mandible B male labrum C female labrum D male right mandible E female tergite VIII F female sternite VIII G female tergite IX H male tergite VIII I male sternite VIII J male sternite IX K aedeagus in ventral view L aedeagus in lateral view M aedeagus in dorsal view. Scale bars: 0.5 mm.

Paederus (Harpopaederus) xui Peng & Li, sp. n.

Figs 1F, 2F, 7

Type material

Holotype: ♂, labelled ‘China: Sichuan Province, Nanjiang Hsien, Micang Shan, Daba, 32°40‘N, 107°02‘E, 1800 m, 27.IV.2008, Huang & Xu leg.’ (SNUC). Paratypes: 2 ♂♂, 3 ♀♀, same label data as holotype (SNUC); 1♀ [teneral]: ‘CHINA (S.Shaanxi) Micang Shan, 33 km S Hanzhong, 32°44'44"N, 106°52'46"E 1360 m (stream valley, forest margin with tall herbaceous vegetation, pitfall traps, vinegar) 15.-16.VIII.2012 D.W. Wrase [30A]’ (cSch); 2♀♀: ‘CHINA: S-Shaanxi [CH12-31], Micang Shan, 40 km SW Hanzhong, 32°52'25"N, 106°37'11"E, 1530 m, N-slope, mixed secondary forest, litter and moss sifted, 16.VIII.2012, leg. M. Schülke’ (cSch, cAss).

Description

Measurements (in mm) and ratios: BL: 8.67–9.34; FL: 4.72–4.95; HL: 0.93–0.98; HW: 1.07–1.11; AnL: 2.72–2.95; PL: 1.23–1.26; PW: 1.10–1.13; EL: 0.87–0.94; EW: 1.13–1.20; AW: 1.74–1.77; AL: 1.38–1.41; HL/HW: 0.84–0.87; HW/PW: 0.96–0.98; HL/PL: 0.76–0.78; PL/PW: 1.10–1.13; EL/PL: 0.71–0.75; diameter of eye: 0.34–0.36.

Habitus as in Fig. 1F. Coloration: head, labrum and apical segments black, labial palpi and antennae yellowish brown; pronotum brownish red; elytra blackish blue with metallic luster; first four abdominal segments reddish brown; legs yellowish brown, with apical halves of femora black.

Head wider than long, widest across eyes; punctation coarse and sparse; interstices glossy. Mandibles without distinct sexual dimorphism. Eyes distinctly convex. Antenna as in Fig. 2F.

Pronotum nearly oviform, strongly convex in cross-section; punctures somewhat sparser and shallower than those of head.

Elytra trapeziform; punctation coarse, defined and dense. Hind wings reduced. Metatarsomere I as long as combined length of metatarsomeres II and III.

Abdomen distinctly broader than elytra; punctation coarse; interstices with very shallow microsculpture; posterior margin of tergite VII without palisade fringe.

Male. Anterior margin of labrum (Fig. 7B) distinctly sinuate; each mandible (Fig. 7A, D) with single bicuspidate tooth. Posterior margin of tergite VIII (Fig. 7H) convex; sternite VII unmodified; sternite VIII (Fig. 7I) with deep posterior incision, this incision approximately 0.4 times as long as sternite VIII; sternite IX as in Fig. 7J; aedeagus as in Fig. 7K–M; dorsal plate of median lobe nearly symmetric, long and slender; parameres very slender and curved apically; internal sac without sclerotized spines.

Figure 7.

Paederus xui. A male left mandible B male labrum C female labrum D male right mandible E female tergite VIII F female sternite VIII G female tergite IX H male tergite VIII I male sternite VIII J male sternite IX K aedeagus in ventral view L aedeagus in lateral view M aedeagus in dorsal view. Scale bars: 0.5 mm.

Female. Labrum as in Fig. 7C. Posterior margin of tergite VIII (Fig. 7E) truncate; posterior margin of sternite VIII (Fig. 7F) with narrowly triangular median process; tergites IX and X as in Fig. 7G.

Distribution and natural history

The type locality is situated in the Micang Shan to the north of Nanjiang, northern Sichuan. The specimens were sifted from leaf litter in a mixed deciduous forest at an altitude of 1,800 m.

Etymology

The species is dedicated to Wang Xu, who collected some of the type specimens.

Comparative notes

As can be inferred from the highly similar sexual characters, the new species is allied to the geographically close P. antennocinctus Willers, 2001 (Sichuan: Jiuzhaigou; Gansu: Qiujia Dam), from which it differs by the coloration of legs, the somewhat smaller size, the shape of the labrum, the longer dorsal plate of the aedeagus and the nearly trifurcate posterior margin of the female sternite VIII.

Acknowledgements

All the collectors mentioned in the text are acknowledged for their field work. Two anonymous reviewers are thanked for comments on a previous version of the manuscript. Special thanks are extended to Volker Assing (Hannover, Germany) and Joachim Willers (Berlin, Germany) for their comments on an earlier version of the manuscript, to the former also for linguistic revision. The study is supported by the National Natural Science Foundation of China (No. 31201734 and 31101659), the Foundation of Shanghai Municipal Education Commission (No. 12YZ077 and No. 13YZ062) and Shanghai Normal University (SK201234, DZL125 and B–9013–11–003127).

References

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