Trachystolodes tonkinensis Breuning, 1943

Huang, Gui-Qiang, Guo, Liang & Liu, Peng-Yu, 2020, A review of the genus Trachystolodes Breuning, 1943 (Coleoptera: Cerambycidae Lamiinae: Lamiini), Zootaxa 4759 (1), pp. 49-64 : 56-61

Trachystolodes tonkinensis Breuning, 1943 ḎṄḆX+

Figures 29–31 , 32–34 , 35–45 , 46–51 , 52

Trachystolodes tonkinensis Breuning, 1943: 188 , fig. 2 (type locality: “Chapa, Tonkin, Vietnam ”); Breuning, 1961: 319 (catalogue); Rondon & Breuning, 1970: 424, fig. 25a; Pu, 1980: 90, pl. IX, fig. 124; Hua, 1982: 128 (catalogue); Hua et al. 1993: 113, pl. XIX, figs. 184a (male) & 184b (female); Hua, 2002: 235 (catalogue); Hua et al., 2009: 120, pl. CXX, fig. 1389 (female); Löbl & Smetana, 2010: 287 (catalogue); Xiang et al., 2016: 119, 120, figs. (female) 1, 4, 7, 10, 13, 16, 19, 22; Lin & Yang, 2019: 323 (catalogue).

Trachystolodes tonkinensis m. pici Breuning, 1943: 188, fig. 3 (type locality: “Hoa-Binh, Tonkin, Vietnam ”); Breuning, 1961: 319 (catalogue).

Redescription. Male. Body length: 14.0–27.0 mm, humeral width: 7.0–11.0 mm (20 individuals); one specimen ( Figs. 29–34 , 35–45 ), body length: 18.6 mm, humeral width: 7.2 mm. Anteclypeus brown ( Fig. 32 ). Mandibles sparsely covered with short white setae and short brown setae on outside of dorso-basal 3/5 and latero-basal 3/5, with several long brown hairs on latero-basal 3/5 ( Fig. 32 ). Labrum sparsely covered with long brown hairs (mainly concentrated at sides), short white setae and short brown setae, with a row of extremely dense golden setae at apex ( Fig. 32 ). Frons sparsely covered with long brown hairs at basal margin ( Fig. 32 ), vertex with several brown long pubescence at posterior of upper lobe of eyes. Antennomeres covered with short grayish-brown hairs (hairs gradually dense from basal segments to apical segments, but densest at antennomeres 9 th– 11 th), antennomere 11 th densely with short light grayish-brown hairs at apical 1/3; apical cicatrix of scape moderately covered with dense short yellowish brown hairs; scape, pedicle, venter of antennomere 3 rd sparsely covered with short brown setae; antennomeres 3 rd– 10 th sparsely with slightly long thick light brown setae apically. Pronotum and sides of prothorax sparsely covered with short dark brown setae located in rounded punctuations, pronotum with several long dark brown pubescence near sides of the large callus and near base of lateral spines; prosternal process reddish brown apically. Black setal spots near elytral middle sub-rectangular and bordered with short light yellowish brown hairs. Abdomen sparsely covered with semi-erected brown and dark brown setae, abdominal 5 th segment covered with several long thick dark brown hairs at sides and yellowish brown hairs at sides of apical 1/3, densely with long and short yellowish brown hairs at apical margin. Apex (except venter) of femora and basal dorsum of tibiae densely covered with short golden yellow setae.

Mandibles wide and thickened, nearly as long as frons, nearly smooth at dorso-apical 2/5, wrinkled on outsides of dorso-basal 3/5 and latero-basal 3/5, depressed on latero-basal 3/5. Labrum transversally raised in middle. Frons with a transverse furrow at base and a pair of oblique short furrows at basal sides. Antennae 1.98 times as long as body, relative length of each antennomere as follows: 2.8: 0.5: 3.0: 2.3: 2.1: 1.8: 1.8: 1.6: 1.4: 1.3: 2.0. Pronotum and sides of prothorax sparsely covered with rounded punctuations; both small calluses on pronotum sub-pyramidal, the large callus on pronotum anchor-shaped, wrinkled dorsally and notched apically, with a mesial longitudinal furrow. Elytra 1.58 times as long as wide at base. Hind wing with Cu vein not extending to margin, Pc vein reduced into basal and apical parts, basal part short, not connecting with Cu vein and without a cross vein connecting with 1A 3 +2A vein; 1A 1 and 1A 2 veins dissociative and weak apically, 1A 3 +2A vein weak apically, 3A vein weak at most of parts of basal 1/2, 1A 3 +2A and 3A veins fused at most of parts of apical 1/2. Abdominal 5 th segment sub-truncated apically. Fore femora wrinkled.

Male terminalia. Dorsum of tergite VIII ( Fig. 35 ) sparsely covered with long and short brown setae (most of setae located at sides and apical 1/5), sparsely with long dark brown setae at apex and sides of apical 1/5, with a piece of longitudinally glabrous section in center of basal 2/3; ventral of tergite VIII ( Fig. 36 ) sparsely covered with short brown setae at apical 1/3 (mainly concentrated on the dark brown section), sparsely with long brown setae and several long dark brown setae at apex and apical 3/5 of sides; disc wider than long, rounded apically, sub-trapezoidal at apical 3/5, sides of basal 2/5 sub-paralleled. Venter of sternite VIII ( Fig. 36 ) sparsely covered with long and short brown setae at apical 2/3 (setae mainly concentrated at apical 1/3); most of parts of disc membranous, sclerotic section slightly with an arc notch at apical middle; spiculum relictum nearly 1.3 times as long as sternite VIII, sub-paralleled at sides of basal 1/3, then gradually expanded to apex, gradually constricted towards apex in dorsal view. Spiculum gastrale ( Figs. 37–39 ) nearly 2.5 times as long as tergite VIII, stem of spiculum gastrale curved at basal 1/4 and hook-like basally in profile ( Fig. 38 ), branches of spiculum gastrale 0.28 time as long as stem. Tegmen ( Figs. 40–42 ) longer than penis, dorsum of parameres nearly glabrous at basal 1/3, sparsely covered with short brown setae and long thick brown setae (setae mainly concentrated at apical 1/4, longest setae nearly 0.5 time as long as parameres) at apical 2/3; venter of parameres with short and fine sparse brown setae at basal 2/3 (setae mainly concentrated at base), with several long brown setae at apical 1/3, each lobe rounded apically and longitudinally depressed at outer half of ventro-basal 1/2 ( Fig. 42 ); phallobase nearly 3.0 times as long as parameres, expanded at apical 2/5 and gradually constricted to base, then curved near basal 1/5 ( Fig. 41 ), anterior tegminal strut sub-truncated apically ( Figs. 40 & 42 ). Penis uniformly curved ( Fig. 44 ), dorsal plate shorter than ventral plate and sub-triangular apically ( Fig. 43 ), ventral plate widely rounded at apex ( Fig. 45 ); dorsal struts 0.43 time as long as entire penis, apex of dorsal struts slightly expanded towards inner sides ( Fig. 43 ), outer side of apical margin of dorsal struts folded towards dorsum ( Fig. 44 ).

Female. Similar to male, but body length: 16.0– 27.5 mm, humeral width: 7.0–10.0 mm (18 individuals); one specimen ( Figs. 46–49 ), body length: 26.0 mm, humeral width: 9.0 mm. Antennae 1.46 times as long as body, relative length of each antennomere as follows: 3.0: 0.5: 3.1: 2.1: 1.8: 1.5: 1.4: 1.2: 1.1: 1.1: 1.2. Elytra 1.35 times as long as wide at base. Hind wing with 1A 3 +2A vein connecting with a very short cross vein near middle ( Fig. 51 ). Abdominal 5 th segment notched apically.

Material examined. CHINA: Fujian: 1 male ( IZAS), Shuibei street, Shaowu city, Nanping city, 25. VI.1963; 1 female ( CJBH), Liangye mountain, Wuping county, Longyan city, alt. 1100 m, 20. VI.2017, Jian-Bin Huang leg.; Guangxi: 1 male ( CJBH), Shengtang mountain, Jinxiu county , Laibin city, alt. 950 m 1. VI.2015, Jian-Bin Huang leg.; Guizhou: 1 female ( CGQH), no detailed collecting data ; Sichuan: 1 female ( IZAS), 3.VII.1931, Xue-Guang Wen leg. ; Yunnan: 1 female ( CPYL), Daweishan National Nature Reserve, Pingbian county, Honghe Hani and Yi autonomous prefecture, alt. 2000 m, 6. VI.2019, Liang Guo leg.; 1 female ( CGQH), same data, but 103°41’54.40” E, 22°54’14.24” N, alt. 2100 m, 18–19.VIII.2018, Si-Yao Huang leg. ; 4 males and 2 females ( IZAS), same data, but alt. 1300 m, 23. VI.1956, Ke-Ren Huang et al. leg .; 4 males and 2 females ( IZAS), same data, but alt. 1500 m, 17. VI.1956, Ke-Ren Huang et al. leg .; 1 male ( IZAS), same data, but alt. 1350 m, 21. VI.1956, Panfilov leg.; 1 male ( IZAS), same data, but alt. 1350 m, 25. VI.1956, Panfilov leg.; 1 female ( IZAS), same data, but alt. 1350 m, 26. VI.1956, Panfilov leg.; 1 female ( IZAS), same data, but alt. 1350 m, 27. VI.1956, Panfilov leg.; 1 female ( IZAS), same data, but alt. 1500 m, 22. VI.1956, Ke-Ren Huang et al. leg .; 1 male ( YZU), Maoping village, Dulong town, Maguan county , Wenshan Zhuang and Miao autonomous prefecture, 25.VII.2017, Yong-Xia Wu & Yu-Jie Dou leg. ; 1 female ( YZU), Gulinjing township, Maguan county, Wenshan Zhuang and Miao autonomous prefecture, 20.VII.2006, Ben-Yong Mao leg. ; 1 male ( YAFG), Kashang forestry center, Maguan county, Wenshan Zhuang bitus of live adults females (49 from Bizuo group, Yaosuo village , Dongtang township , Maolan town , Libo county , Guizhou ,

China, photograph by Ri-Xin Jiang on 28 April 2017; 50 from Daweishan National Nature Reserve , Yunnan , China, photograph

by Lu Qiu on 18 May 2015); 51. right hind wing, dorsal view (A: anal, C u: cubitus, P c: post cubitus; red arrow indicates broken section); 46, 49, 50 & 51. dorsal view, 47. lateral view, 48. ventral view. Scale bars: 5 mm.

and Miao autonomous prefecture, alt. 1300 m, 16.VII.1979, Qi-Lin Xiong leg.; 1 female ( YAFG), Baihe township, Pingbian county, Honghe Hani and Yi autonomous prefecture, alt. 800 m, 3.VII.1979, Bao-Yuan Zhang leg. ; LAOS: Houaphan: 2 males and 1 female ( CSH), Mt. Phu Phan , 2060 m, VI.2017, local collector leg .; 1 male and 1 female ( CXG), Mt. Phu Phan , 17.VII.2013, local collector leg .; 1 female ( CXG), Mt. Phu Phan , 1. V.2012, local collector leg .; Xiang Khuang: 1 male ( CGQH), Muang Phang , IX. 2017, local collector leg .; 1 female ( CGQH), Muang Phang , 5–15. V.2019, local collector leg .; VIETNAM: Vinh Phuc: 1 male ( CSH), Tam Dao NP, near Tam Dao town , 2–5. V.2013, 21°27’N, 105°38’E, alt. 700–1000m, Andre Skale leg ; Tonkin: 1 male ( IZAS), MonBavi , alt. 900–1000 m, VIII.1940, P.A. de Cooman leg. ; 1 female ( IZAS), Hoa-Binh , VIII.1959, A de Cooman leg.

Distribution. China (Fujian, Guangdong, Guangxi, Guizhou, Hainan, Jiangxi, Sichuan, Yunnan); Vietnam ( Tonkin, Vinh Phuc); Laos (Houaphan, Xiang Khuang).

Remarks. Figures 29, 31 , 46 and 48 show the elytra of this species separated from each other at apex, which was caused by the senior author dissecting the hind wings, the elytra are actually not separate from each other at apex in natural condition. Pu (1980) recorded this species distributed in China (Yunnan: Jinping), Laos and Vietnam, then Hua et al. (1993) recorded this species distributed in China [Guangdong (Fengkai), Hainan (Jiangfengling), Guangxi, Yunnan] and provided figures of male and female, Hua (2002) also recorded this species distributed in China (Fujian, Guangdong, Guangxi, Hainan, Jiangxi, Sichuan, Yunnan), Laos and Vietnam; but above authors did not provide any details of specimens examination. After examining the specimens from China (Fujian, Guangxi, Guizhou, Sichuan, Yunnan), we verified some above mentioned localities of this species, but other localities still need to be verified by examining additional specimens. Therefore, the distribution map of this species was made based on the records in original paper ( Breuning, 1943; Rondon & Breuning, 1970), data from specimens examined and photographs.

Figures

FIGURE 52. Distribution map of Trachystolodes species.

FIGURES 29–31. Trachystolodes tonkinensis, male from Guangxi, China. Habitus: 29. dorsal view, 30. lateral view, 31. ventral view. Scale bars: 5 mm.

FIGURES 32–34. Trachystolodes tonkinensis, male from Guangxi, China. 32. Head, frontal view; 33. prothorax, dorsal view; 34. right hind wing, dorsal view (A: anal, Cu: cubitus, Pc: post cubitus; red arrow indicates broken section). Scale bars: 5 mm.

FIGURES 35–45. Male terminalia of T. tonkinensis from Guangxi, China. 35–36. Tergite VIII and sternite VIII, 37–39. spiculum gastrale, 40–42. tegmen, 43–45. penis (red arrows indicate broken sections); 35, 37, 40 & 43. dorsal view; 38, 41 & 44. lateral view; 36, 39, 42 & 45. ventral view. Scale bar: 1 mm.

FIGURES 46–51. Trachystolodes tonkinensis, females from China (Fujian, Guizhou, Yunnan). 46–48. Habitus; 49 & 50. ha-