China, Hainan Province, Wuzhishan Mountain.

(11 ♂♂, 5 ♀♀). HOLOTYPE: ♂, labeled ‘CHINA: Hainan Prov. / Wuzhishan Mt. / Guzhandao / ca. 640 m, 30.xi.2009 / 18.86657°N, 109.68285°E / Mei-Ying Lin leg. // [red] HOLOTYPE / Pselaphodes linae Yin & Li / det. 2012, SNUC’. PARATYPES (all bear the following label: ‘[yellow] PARATYPE / Pselaphodes linae Yin & Li / det. 2012, SNUC’): 2 ♂♂, 3 ♀♀, same label data as holotype; 2 ♂♂, 1 ♀, labeled ‘CHINA: Hainan Prov. / Yinggeling N. R. / Daoyin–Shenfu / ca. 425 m, 22.xi.2009 / Mei-Ying Lin leg.’; 1 ♀, same label data, except ‘14.IV.2010 / 18.98399°N, 109.33585°E’; 5 ♂♂, labeled ‘CHINA: Hainan Prov. / Baisha, Yuanmen / Yinggeling N. R. / Yinggezui / 660 m, 26.iv.2011 / Wen-Xuan Bi leg.’; 1 ♂, labeled ‘CHINA: Fujian Prov. / Nanjing County / Huboliao / ca. 200 m, 22.xi.2008 / Gan-Yan Yang leg. (beating)’.

Reddish brown; medium-sized; genae rounded; antennomeres IX–XI strongly modified; pronotum with rounded lateral margins; with thin and long metaventral processes (in lateral view); pro- and metatibiae sinuate; aedeagus with asymmetric median lobe and small parameres.

Male (Fig. 1). Length 2.65–2.87. Head as long as wide, HL 0.56–0.58, HW 0.56–0.58; eyes large, each composed of about 40 facets. Antennal clubs as in Fig. 2A. Pronotum (Fig. 2B) slightly longer than wide, PL 0.55–0.56, PW 0.50–0.52, with round lateral margins. Elytra wider than long, EL 0.80–0.81, EW 0.99–1.04. Metaventral horn-like processes long (Fig. 2H). Legs having protibiae with blunt and slightly serrate apical projection (Figs 2C, D); mesotrochanters with minute ventral spine (Fig. 2E); metatrochanters with large robust spine (Fig. 2F). Abdomen large, AL 0.74–0.92, AW 1.00–1.02. Sternite IX as in Fig. 2I. Aedeagus length 0.39; with long asymmetric median lobe; apical half of parameres membranous (Figs 2J–L).

Female. Similar to male in general; BL 2.60–2.75, HL 0.56–0.58, HW 0.53–0.57, PL 0.56–0.58, PW 0.50–0.52, EL 0.67–0.70, EW 0.98–1.04, AL 0.81–0.89, AW 1.05–1.09. Eyes each composed of about 30 facets. Antennae simple; protibiae not spinose; metaventral horn-like processes absent.

South China: Hainan, Fujian.

Very distinctive species, easily separable from all other Pselaphodes species by the sinuate pro- and metatibiae, the metatibiae with a blade-shaped ventral tooth near apical 1/3, and the serrate ventral margin for the distance posterior to the tooth. The new species shares with Pselaphodes bomiensis Yin et al., 2011 and Pselaphodes condylus Yin et al., 2011 a similar placement of the antennal modification, but can be readily separated from both by the pronotal lateral margins being rounded. On the contrary the lateral margins of the pronotum are more or less angularly expanded laterally in Pselaphodes bomiensis and Pselaphodes condylus.

The species name is dedicated to Mei-Ying Lin for the collection of part of the type series.

China, Hainan Province, Jianfengling Natural Reserve

(2 ♂♂). HOLOTYPE: ♂, labeled ‘CHINA: Hainan Prov. / Ledong County / Jianfengling N. R. / Yulingu, river bank / 18.74686°N, 108.92988°E / ca. 635, 20.iii.2007 / H.L. Shi, F. Yuan leg. // [red] HOLOTYPE / Pselaphodes shii Yin & Li / det. 2012, SNUC’. PARATYPE: 1 ♂, labeled ‘CHINA: Hainan Prov / Yinggeling, Nankai / Daoyin–Mohao / ca. 335 m, 15.iv.2010 / 19.01021°N, 109.36910°E / Mei-Ying Lin leg. // [yellow] PARATYPE / Pselaphodes shii Yin & Li / det. 2012, SNUC’.

Reddish brown; medium-sized; postocular margins rounded; antennomeres IX strongly modified; pronotum angularly expanded laterally; with robust and long metaventral processes (in lateral view); aedeagus with asymmetric median lobe and long parameres.

Male (Fig. 3). Length 2.85–2.95. Head as long as wide, HL 0.56–0.60, HW 0.58–0.59; genae rounded; eyes large, each composed of about 40 facets. Antennal clubs as in Fig. 4A. Pronotum (Fig. 4B) almost as long as wide, PL 0.55–0.56, PW 0.57–0.58, with angulate anterolateral margins. Elytra wider than long, EL 0.81–0.84, EW 1.07–1.10. Metaventral horn-like processes long (Fig. 2G). Legs having protibiae with blunt and slightly serrate apical projection (Figs 2C, D); mesotrochanters with distinct ventral spine (Fig. 2E); metatrochanters with long, apically blunt spine (Fig. 2F). Abdomen large, AL 0.93–0.95, AW 1.08–1.12. Sternite IX as in Fig. 2H. Aedeagus length 0.59; with broad asymmetric median lobe and elongate parameres (Figs 4I–K).

Female. Unknown.

South China: Hainan.

This species is placed close to Pselaphodes bomiensis, Pselaphodes condylus and Pselaphodes jizushanus Yin et al., 2011 by sharing a similar placement of the antennal modification and projected anterolateral margins of the pronotum. It can be readily separated from Pselaphodes bomiensis and Pselaphodes condylus by the much smaller size and different form of the antennomeres IX, from Pselaphodes jizushanus by the metaventral processes being slightly curved posteriorly, the metatrochanters being protuberant ventrally and the metatibiae being simple. Pselaphodes jizushanus has the metaventral processes being curved anteriorly, the metatrochanters are simple, and the metatibiae are bluntly projected at apical 1/5.

The species is named after Hong-Liang Shi for the collection of the holotype.

The latest key to the Chinese Pselaphodes (Yin et al. 2012: 36) is modified as the following to include the two new species described in the present paper.

China, Taiwan, Nantou.

(2 ♂♂, 3 ♀♀). 2 ♂♂, labeled ‘CHINA: Hainan Prov. / Yinggeling, Nankai / Daoyin–Mohao / ca. 335 m, 15.iv.2010 / Mei-Ying Lin leg.’; 3 ♀♀, labeled ‘CHINA: Hainan Prov. / Wuzhishan Mt. / Guzhandao / ca. 640 m, 30.xi.2009 / 18.86657°N, 109.68285°E / Mei-Ying Lin leg.’.

Male (female): BL 2.78–2.87 (2.68–2.74), HL 0.56–0.57 (0.57–0.58), HW 0.53–0.54 (0.52–0.54), PL 0.57–0.58 (0.58–0.60), PW 0.55–0.57 (0.53–0.58), EL 0.82–0.84 (0.67–0.69), EW 1.11–1.15 (1.06–0.10), AL 0.83–0.88 (0.86–0.87), AW 1.13–1.16 (1.16–1.22), length of aedeagus 0.50.

Male. Reddish brown; medium-sized (Fig. 5); postocular margins rounded; each eye composed of about 40 facets; antennomeres X modified, ventrally concave at apical half (Fig. 6A); pronotum with angulate anterolateral margins; robust and short metaventral processes with hook-like apices (in lateral view) (Fig. 6B); protrochanters spinose ventrally; protibiae with small apical spur (Fig. 6D); tarsomeres II extending to mid-length of tarsomeres III (Figs 6D–F); aedeagus asymmetric, median lobe elongate, parameres largely reduced (Figs 6G–I).

Female. Similar to male in general; each eye composed of about 30 facets; lacking antennal modification; lacking metaventral process; apices of protibiae simple.

South China: Taiwan, Hainan (New Province Record).

Readily distinguished from the only other congener Taiwanophodes magnus Bekchiev, 2010 by the smaller size, antennomeres X being less modified, pronotum being angularly expanded anterolaterally, profemora and protibiae being simple, different conformation of the metaventral processes, and aedeagus with more elongate median lobe and reduced parameres.

Taiwanophodes minor was originally described from central Taiwan (Hlaváč, 2002). It is somewhat surprising that this species also occurs in the Hainan Island, suggesting geographic affinities between the two islands.