Hybovalgus tonkinensis Moser, 1904

Ricchiardi, Enrico, 2017, Revision of Chinese mainland Hybovalgus Kolbe, 1904, with description of a new species, and Excisivalgus Endrödi, 1952 reduced to synonymy with Hybovalgus (Coleoptera: Scarabaeidae), European Journal of Taxonomy 340 (340), pp. 1-32 : 27-30

Hybovalgus tonkinensis Moser, 1904

Fig. 11

Hybovalgus tonkinensis Moser, 1904: 272 .

Excisivalgus klapperichi Endrödi, 1952: 63 syn. nov.

Hybovalgus tonkinensis – Schenkling 1922: 51. — Krajčík 2011: 93, fig. 47.

Excisivalgus klapperichi – Krajčík 2011: 91, fig. 54.

non Hybovalgus thoracius Ma 1995: 196 . Misidentification.

Type material

Lectotype (here designated)

VIETNAM: ♂, Tonkin, Montes Mauson (Lang Son Pr., Mt Mau Son ) 21°50′56″ N, 106°58′00″ E, Apr– May, 2000 – 3000’, H. Fruhstorfer leg. ( MNHUB).

Paralectotype (here designated)

VIETNAM: 1 ♂, same data as LT ( MNHUB).

Other type material examined

Excisivalgus klapperichi Endrödi, 1952

Holotype

CHINA: ♀, Fujian, Kuatun ( Guadun ), 27°40′ N, 117°40′ E, 2300 m, 21 Apr. 1938, J. Klapperich leg. ( ZFMK).

Paratypes

CHINA: 1 ♀, same data as HT but 24 Mar. 1938 ( HNHM); 1 ♀, same data but 8 Apr. 1938 ( ZFMK); 4 ♀♀, same data but 28 Mar. 1938 ( ZFMK); 1 ♀, same data but 28 Apr. 1938 ( ZFMK); 1 ♀, same data but 24 Apr. 1938 ( ZFMK); 1 ♀, Fujian, Kuatun, ( Guadun ), 27°40′ N, 117°40′ E, 28 Apr. 1946, Tschung Sen leg. ( SNMS).

Other material examined

CHINA: 1 ♂ ( HNHM), 1 ♂ ( ERC), Fujian, Kuatun, Guadun , 27°44′01″ N, 117°38′30″ E, 2300 m, 3 Apr. 1938, L. Klapperich leg.; 4 ♂♂, 2 ♀♀, Fujian, Kuatun, 28 Apr. 1946, Tchung Sen leg. ( ERC); 1 ♂, Fujian, Kuatun, 21 Mar. 1946, Tchung Sen leg. ( ERC); 2 ♂♂, Fujian, Kuatun, 24 Apr. 1946, Tchung Sen leg. ( ERC); 1 ♂, Fujian, Kuatun, 22 Apr. 1946, Tchung Sen leg. ( MNHUB); 1 ♂, Fujian, same data but 18 Apr. 1946 ( HNHM); 1 ♂, Fujian, Kuatun, 27.40 N, 117.40 O, 2300 m, 20 Apr. 1938, L. Klapperich leg. ( HNHM); 2 ♂♂, Fujian, same data but 8 Apr. 1938 ( HNHM); 1 ♂, Fujian, same data but 5Apr. 1938 ( HNHM); 1 ♂, Fujian, same data but 27 Apr. 1938 ( HNHM); 4 ♂♂, Zhejiang, Mt. Changlongshan, Anji , 800–900 m, 28 Apr. 2015, Xi Huangshun leg. ( ERC); 2 ♂♂, Hunan, Hunan SE, Guidong env., 26–31 May 1994, E. Jendek and O. Sausa leg. ( ERC); 6 ♂♂, Guizhou, 20 km NW of Jangkow, Fanjing Shan, 27 May–3 Jun. 1995, E. Jendek leg. ( ERC); 1 ♂, Hainan, Wuzhishan, 1 Jun. 2009 ( ERC); 4 ♂♂, China, Jangxi, Jinggang Shan, Ciping, 2–14 Jun. 1994, E. Jendek and O. Sousa leg. ( ERC); 1 ♂, Guangxi, Mt. Dayaoshan, Jinxin, Pingzhao, 1200 m, May 2015 ( ERC); 1 ♂, Guangxi, same data but 15–25 May 2014, Zanjingshen leg. ( ERC); 12 ♂♂, Tibet Province ( AMNH); 1 ♂, Zhejiang, Mt. Tianmushan, Laodian 30°20′448″ N, 119°26′44″ E, 9 May 1998, Yu Zhiyong leg. ( IZAS); 1 ♂, Zhejiang, Tiemushan, 13 May 1937, O. Piel Coll., IOZ( E) 902263 ( IZAS); 1 ♂, Zhejiang, Tiemushan, 10 May 1937, O. Piel Coll., IOZ( E) 902263 ( IZAS); 1 ♂, Zhejiang, E. Tiemushan, 30°19′2″ N, 119°31′60″ E, 12 Jun. 1936, IOZ( E) 902269 ( IZAS); 1 ♂, 1 ♀, Fujian, Mt. Wuyishan, 22 Apr. 1982, Zhang Baolin leg., IOZ( E) 1945182 ( IZAS); 1 ♀, Fujian, Chong’an, Xingcun, Shilichang , 27°43′41.0376″ N, 117°40′7.446″ E, 840 m, 25 May 1960, Jiang Shengqiao leg., IOZ( E) 902233 ( IZAS); 1 ♀, Fujian, Chongan, Xingcun , Sangang , 27°45′13″ N, 117°41′16″ E, 720 m, 14 May 1960, Pu Fuji leg., IOZ( E) 902227 ( IZAS); 1 ♂, Fujian, Jiangyang, road from Huangkeng to Guilin, 290–320 m, 12 Apr. 1960, Jiang Shengqiao leg., IOZ( E) 902259 ( IZAS); 1 ♀, Fujian, Chongan, Tongmuguan , Guanping , 27°48′15″ N, 117°43″ E, 800– 900 m, 6 Jun. 1960, Jiang Shengqiao leg., IOZ( E) 902228 ( IZAS); 1 ♀, Fujian, Chongan, Tongmuguan , Guanping 27°48′15″ N, 117°43″ E, 800–900 m, 6 Jun. 1960, Jiang Shengqiao leg., IOZ( E) 902229 ( IZAS); 1 ♀, Fujian, Jianyang, road from Huangkeng to Guilin, 270 m, 11 Apr. 1960, Ma Chenglin leg., IOZ( E) 902231 ( IZAS); 1 ♂, Fujian, Jianyang, Huangkeng to Guilin, 290–320 m, 14 Apr. 1960, Jiang Shengqiao leg., IOZ( E) 902260 ( IZAS); 1 ♂, Fujian, Jianyang, road from Huangkeng to Guilin, 290–320 m, 12 Apr. 1960, Jiang Shengqiao leg., IOZ( E) 902258 ( IZAS); 1 ♀, Fujian, Jianyang, Huangkeng , Aotou , 27°40′21″ N, 117°39′20″ E, 800–1050 m, 26 Apr. 1960, Zhang Yiran leg., IOZ( E) 902232 ( IZAS); 1 ♀, Fujian, Jianyang, Huangkeng , Aotou , 27°40′21″ N, 117°39′20″ E, 950 m, 23 Apr. 1960, Zuoyong leg., IOZ( E) 902264 ( IZAS); 1 ♂, Fujian, Chongan, Xingcun , Qiliqiao , 27°44′4″ N, 117°40′31″ E, 840 m, 1 Jun. 1960, Zuo Yong leg., IOZ( E) 902261 ( IZAS); 1 ♀, Guizhou, Suiyang, Kuankuoshui Nature Reserve, 27°57′51″ N, 107°11′32″ E, 9 Jun. 2010, Wang Zhiliang leg. ( IZAS).

VIETNAM: 1 ♂, Tamdao, 17–21 May 1990, P. Pacholatko leg. ( ERC); 1 ♂, Tamdao, 12–24 May 1990, P. Pacholatko leg. ( ERC).

Remarks

Endrödi (1952) described Excisivalgus klapperichi Endrödi, 1952 on the basis of 57 females from Kuatun (Guadun, Fujian) as a new species belonging to the new genus Excisivalgus Endrödi, 1952 . He did not try to pair this species (and a second one, Excisivalgus csikii Endrödi, 1952 ; see section Remarks above under H. fraternus ) to the many males of Hybovalgus collected from the same locality and named the new genus after the wide excision of the posterior margin of the pronotum. Actually, we found that E. klapperichi is the female of H. tonkinensis , as evidenced by the capture of both sexes in the same place and time. An additional proof is the presence in the IZAS collection of a pair in copula (see the material examined list and Fig. 2 ).

Identification of female

The female (formerly Excisivalgus klapperichi Endrödi, 1952 ) can be easily separated from males by the wide and deep excision of the pronotal posterior margin; by the modified apex of the pygidium and by the black propygidial scale tufts. Furthermore, the ventral side of females is glabrous ( Fig. 11H ).

Species variability

Male

Males are variable, even in size (length 6.9–9.2 mm, width 3.8–5.2 mm). The pygidium of males has a double pointed testaceous scale tuft at the apex, rarely reduced to a fringe of scales. The small scales that cover the propygidium and pygidium vary from testaceous to whitish. The abdomen varies from nearly glabrous to covered with whitish scales at the sides. The posterior half of the pronotal lateral margin varies from slightly indented to slightly arched outwardly. The interteguments of some specimens from Zhejiang are castaneous instead of black, with the pronotum darkened at the anterior and posterior margins; one specimen from the same Chinese province shows black pronotal posterior margin scale tufts (as, in general, is the case in females) instead of testaceous. The parameres do not vary much in shape.

Female

Females show variable scale patterns on the elytra ( Fig. 11 E–I). Furthermore, the colour of the small scales covering the propygidium and pygidium varies from dirty testaceous (sometimes somewhat orange) to black. Less variable in size than males, generally constantly greater, but not attaining the size of the bigger males (female length 8.2–8.6 mm, width 4.9–5.2 mm).

Flight period

Adults were captured from early April to mid-June, at elevations from 300 to 1600 m.

Distribution

Described from northern Vietnam. New records are from China (Fujian, Zhejiang, Jangxi, Guangxi, Hunan, Guizhou, Hainan, Gansu and Sichuan). New finds are necessary to better define the distribution of H. tonkinensis in Sichuan and Gansu. The absence of reports from Yunnan is probably due to a lack of research.

Figures

Fig. 11. A–D. Hybovalgus tonkinensis Moser, 1904. A–B. ♂ from Fujian (ERC). A. Habitus, dorsal view. B. Propygidium and pygidium. C–D. PLT, ♂ (MNHUB). C. Aedeagus, dorsal view. D. Aedeagus, lateral view. E–I. Excisivalgus klapperichi Endrödi, 1952. E–F. HT, ♀ (ZFMK). E. Habitus, dorsal view. F. Propygidium and pygidium. G–I. PT, ♀ (ZFMK). G. Habitus, dorsal view. H. Habitus, ventral view. I. Propygidium and pygidium.

Fig. 2. Mating pair of Hybovalgus tonkinensis Moser, 1904, from Fujian (IZAS). A. ♂. B– C. ♀.