Paratype ♂ [teneral]: “KUATUN FUKIEN, China 21.4.46, (TSCHUNG SEN.) / PARATYPUS, Deinopteroloma hamatum, A. Smetana 1995 [yellow label]” (CNC).

(9 ♂♂, 6 ♀♀). China: Anhui: 2 ♂♂, 2 ♀♀, Huang Shan, Jiulongpu, 30°06'N, 118°12'E, 460–910 m, 26.XI.2011, Zhong Peng leg. (SNUC); 1 ♂, 1 ♀, Guniujiang, 360–420 m, 30.IV.2005, Tang & Hu leg. (SNUC); 2 ♂♂, Guniujiang, 950–1050 m, 28.IV.2005, Tang & Hu leg. (SNUC). Zhejiang: 1 ♂, Anji, Longwang Shan, 950–1200 m, 25.VI.2004, Tang & Hu leg. (SNUC); 1 ♀, Anji, Longwang Shan, 350–550 m, 24.VI.2006, Jin-Wen Li leg. (SNUC); 1 ♂, Anji, Longwang Shan, Qianmutian, 1450 m, 30°23'N, 119°26'E, 14.V.2013, Li & Zheng leg. (SNUC); 1 ♂, 1 ♀, Zhuji, Dongbai Shan, 300 m, 31.III.2013, Tie-Xiong Zhao leg. (SNUC); 1 ♂, Qingyuan County, Baishanzu, 1700 m, 27°45'25"N, 119°12'06"E, 2.V.2014, Zhong Peng leg. (SNUC); Jiangxi: 1 ♀, Sanqing Shan, 800 m, 4.V.2005, Tang & Hu leg. (SNUC).

The original description was based on three type specimens from Guadun, Fujian (Smetana 1996). Considerable interspecific variability of D. hamatum was observed not only in external characters such as body size, coloration, punctation, and shapes of head, pronotum and elytra (Fig. 1), but also in the shape of parameres and internal structures of aedeagus (Fig. 2A, B). The shape of the posterior margin of the male tergite VIII is constant (Fig. 2D). It is recorded here from Anhui, Zhejiang and Jiangxi for the first time. Some specimens were sifted from wet leaves and moss on the rocks near a stream at altitudes from about 460 to 910 m (Fig. 5).

Figure 1. 

Habitus of Deinopteroloma hamatum: A paratype, with type labels, B–E male (B Anhui; C–E Zhejiang). Scale bars: 1.0 mm.

Figure 2. 

Deinopteroloma hamatum (A–D): A–B aedeagus in ventral view, C aedeagus in lateral view, D male sternite VIII. Habitus of Deinopteroloma spp (E–G): E D. obtortum, F D. tricuspidatum, G paratype of D. tricuspidatum, with type labels. Scale bars: 0.5 mm(A–D), 1.0 mm (E–G).

China: Sichuan: 1 ♂, Xiaojin County, Jiajin Shan, 30°48'49"N, 102°42'55"E, 2490 m, 30.VII.2016, Zhou, Jiang, Liu & Gao leg. (SNUC).

The original description was based on two type specimens from Min Shan, Gansu (Assing 2015). It is recorded from Sichuan for the first time. For illustrations of D. obtortum see figure 2E and figures 7–8, 15–18, 23–25 in Assing (2015). The specimen was sifted from leaf litter near the mountain track in mixed deciduous forests at an altitude of 2490 m (Fig. 6).

Holotype ♂: China: Xizang Prov., Linzhi County, Pailong, 30°02'N, 95°00'E, 13.IV.2017 2100 m, Xiao-Bin Song leg. / Holotypus ♂ Deinopteroloma songi sp. n., det. Peng & Li. 2018 (SNUC). Paratypes: 6 ♂♂, 10 ♀♀: same label data as holotype / PARATYPE (yellow), D. songi sp. nov., det. Peng & Li, 2019 (SNUC).

Measurements (in mm) and ratios: BL 3.50–3.73, FL 3.44–3.65, HL 0.59–0.67, HW 0.78–0.83, AnL 1.68–1.78, PL 0.83–0.93, PW 1.30–1.47, EL 1.92–2.09, EW 1.50–1.67, AL 0.98–1.08, HL/HW 0.76–0.87, HW/PW 0.56–0.64, HL/PL 0.71–0.77, PL/PW 0.63–0.68, EL/EW 1.25–1.29.

Habitus as in Fig. 3A. Coloration: Body dark-brown; pronotum with broadly dark-yellowish lateral margins; each elytron with 3 or 4 yellowish brown tubercles; antenna with antennomeres I–IV yellowish and V–VIII gradually more infuscate apically, VIII–XI blackish-brown; maxillary palpi dark-yellowish.

Figure 3. 

Deinopteroloma songi sp. n. A Habitus of paratype, B male sternite VIII, C aedeagus in ventral view, D aedeagus in lateral view. Scale bars: 1.0 mm (A), 0.5 mm (B–D).

Head transverse; posterior part of clypeus and vertex distinctly elevated, with indistinct lateral impressions in middle part and semicircular deep impression in front of ocelli, infraorbital ridges slightly impressed; eyes large and convex; small acute postocular ridge situated away from posterior margin of eye; ocelli large; frons smooth and glossy. All antennomeres longer than broad; measurements of antennomeres (length): I: 0.22; II: 0.14; III–VII: 0.16; VIII: 0.13; IX–X: 0.11; XI: 0.19.

Pronotum distinctly transverse; lateral margins finely crenulate and with somewhat regular outline; lateral portions strongly impressed; disc of pronotum with wide, very convex middle elevation and with distinct longitudinal impression; punctation coarse, rather dense in posteromedian portions, sparser in anteromedian and lateral portions, and very irregular and scattered in median portion.

Elytra without distinct longitudinal ridges; suture elevated in posterior two thirds; punctation coarse and arranged in partly irregular series (except in posterior portion of elytra); each elytron with approximately 3 or 4 smooth tubercles. Hind wings present.

Male. Protarsomeres I–IV very weakly dilated; sternites III–VII unmodified; sternite VIII (Fig. 3B) distinctly transverse, posterior margin broadly concave in middle; aedeagus as in Fig. 3C, D, both parameres slender and slightly curved in ventral view, distinctly extending apex of median lobe; internal sac with pair of sclerotized spines.

Female. Protarsomeres I–IV not dilated. Abdominal sternite VIII without posterior excision. Otherwise similar to male.

Based on the coloration of the body, 6–8 smooth tubercles of the elytra, the presence of pronounced elevations on the pronotum and elytra, as well as the morphology of the aedeagus, the new species is most similar to D. sextuberculatum Shavrin & Smetana, 2016, from which it can be distinguished by the darker coloration, the smaller size (D. sextuberculatum: 4.25–4.92 mm), the shape of the pronotum, the deeper posterior excision of the male sternite VIII and the stouter median lobe of the aedeagus. For illustrations of D. sextuberculatum see Shavrin and Smetana (2016).

The type locality is situated in Pailong to the northeast of Linzhi, southern Xizang. The specimens were sifted from leaf litter, moss and mushrooms in broad-leaved forests at an altitude of 2100 m (Fig. 7).

Patronymic, named after Xiao-Bin Song, who collected some of the type specimens.

Holotype ♂: China: Hunan Prov., Yizhang County Mangshan N. R., 24°56'26"N, 112°59'18"E, 26.IV.2017 1400 m, Peng, Tu & Zhou leg. / Holotypus ♂ Deinopteroloma spinigerum sp. n., det. Peng & Li, 2019 (SNUC).

Measurements (in mm) and ratios: BL 4.39, FL 3.89, HL 0.57, HW 0.91, AnL 1.61, PL 0.89, PW 1.33, EL 2.34, EW 1.81, AL 1.13, HL/HW 0.63, HW/PW 0.68, HL/PL 0.64, PL/PW 0.67, EL/EW 1.29.

Habitus as in Fig. 4A. Coloration: Body dark-brown; pronotum with broadly dark-yellowish lateral margins; each elytron with three yellowish-brown tubercles; antenna with antennomeres I–IV light-brown and V–VI gradually more infuscate apically, VII–XI blackish brown; maxillary palpi dark-yellowish.

Figure 4. 

Deinopteroloma spinigerum sp. n. A Habitus of holotype, B male sternite VIII, C aedeagus in ventral view, D aedeagus in lateral view. Scale bars: 1.0 mm (A), 0.5 mm (B–D).

Head transverse; posterior part of clypeus and vertex moderately elevated, with indistinct lateral impressions in middle part and weak impression in front of ocelli, infraorbital ridges impressed; eyes large and convex; small acute postocular ridge situated away from posterior margin of eye; ocelli large; frons smooth and glossy; antennomeres I–VIII and XI longer than broad; antennomeres IX–X as long as broad; measurements of antennomeres (length): I: 0.17; II: 0.10; III: 0.12; IV–V: 0.11; VI: 0.07; VII: 0.10; VIII–X: 0.08; XI: 0.14.

Pronotum distinctly transverse; lateral margins finely crenulate and with somewhat irregular outline; lateral portions indistinctly impressed; disc of pronotum with wide, very convex middle elevation and with distinct longitudinal impression; punctation coarse, dense in posteromedian portions, rather sparser in anteromedian and lateral portions, and irregular and scattered in median portion.

Elytra without distinct longitudinal ridges; punctation coarse and arranged in partly irregular series (except in posterior portion of elytra); each elytron with approximately three smooth tubercles. Hind wings probably present.

Male. Abdominal sternites III–VII unmodified; sternite VIII (Fig. 4B) distinctly transverse, posterior margin weakly concave in the middle; aedeagus as in Fig. 4C, D, both parameres with small hook-shaped apex, weakly asymmetric and slender, slightly extending apex of median lobe; internal sac with three sclerotized spines.

Unknown.

As can be inferred from the similar morphology of the aedeagus, the new species is allied to D. tricuspidatum Smetana, 1996 (Fujian: Guadun), from which it differs by the finer punctation of the body, by the presence of three yellowish-brown tubercles on each elytron and the shape of sclerotized spines of the internal sac.

The type locality is situated in Mangshan to the south of Yizhang, southern Hunan. The specimens were sifted from leaf litter in mixed deciduous forests at an altitude of 1400 m (Fig. 8).

Figures 5–8. 

Habitats of Deinopteroloma in China: 5 Huang Shan, alt. 460–910 m (Deinopteroloma hamatum); 6 Sheng-Nan Liu (right) and De-Yao Zhou (left) collecting Deinopteroloma obtortum at Jiajin Shan, Sichuan; 7 Pailong, alt. 2100 m (type locality of Deinopteroloma songi sp. n.); 8 Ye-Yue Tu collecting Deinopteroloma spinigerum sp. n. at Mangshan, Hunan.

The specific epithet (Latin, adjective: with spines) alludes to the presence of sclerotized spines in the internal sac of the aedeagus.

Paratype ♀: “KUATUN FUKIEN, China 21.4.46, (TSCHUNG SEN.) / PARATYPUS, Deinopteroloma tricuspidatum, A. Smetana 1995 [yellow label]” (CNC).

China: Zhejiang: 1 ♀, Qingyuan County, Baishanzu, 1200–1360 m 5.V.2004, Hu, Tang & Zhu leg. (SNUC).

Deinopteroloma tricuspidatum was previously known from Guadun, Fujian (Smetana 1996). Considerable interspecific variability of D. tricuspidatum was observed in body size, punctation and the shape of pronotum (Fig. 2F, G). The shape of head and the morphology of female genital segment are constant. It is recorded from Zhejiang represents for the first time. For illustrations of D. tricuspidatum see Fig. 2F, G and Figs 1–3 in Smetana (1996).