Xenorthrius mouhoti Gorham, 1892

Gerstmeier, Roland & Eberle, Jonas, 2010, Revision of the Indo-Australian checkered beetle genus Xenorthrius Gorham, 1892 (Coleoptera: Cleridae, Clerinae) 2584, Zootaxa 2584 (1), pp. 1-121 : 59-62

Xenorthrius mouhoti Gorham, 1892

( Figures 37 , 67A and 67B )

Xenorthrius mouhoti Gorham 1892: 734 .

One of the examined syntypes turned out to be X. guerlachi . Gorham (1892) wrote about a single specimen from Bhamo, which he thought to be a female specimen of X. mouhoti , because of its shorter antennae and the shorter and stouter habitus.

Specimens examined: Lectotype (designated here): Myanmar: Carin Cheba , 900–1100m, L. Fea V XII- 88; Typus, Mouhoti, Gorh .; Syntypus, Xenorthrius mouhoti, Gorham, 1892 ; Museo Civico, di Genova (♂, MSNG) .

Paralectotypes (designated here): Myanmar: Carin Cheba , 900–1100m, L. Fea V XII-88; Teste, Gorham ; Syntypus, Xenorthrius mouhoti, Gorham, 1892 ; Museo Civico, di Genova (♀, MSNG). Carin Cheba, 900– 1100m, L. Fea V XII-88; Xenorthrius mouhoti , n. gen. Gorh. n. sp.; Type (♀, MNHN) .

Others: India: Darugiri, Garo Hills 450m, 19.5.76; Megalaya, Wittmer, Baroni Urb. M.Bâle (MNHN). Laos: Laos, Mouhot; Xenorthrius mouhoti, Gorham ; Museum Paris, coll. Gorham 1914 (MNHN). C Laos, near Muang Khoum, Xiang Khoang, VIII. 2002 (KSCT). E-Phangsawang, 24km, Xieng Khouang, Laos / 11.V.2008, T.Mizusawa leg (KSCT). Laos, 1963, Umgeb. Paklay (2ex., ZSM). Laos, Phongsali Province, Oa- Tai; E102.15 ’ N21.50 ’, 19–28 May 2008, (purchased Jingke Li) (2ex., JSBC). Laos, Umg. Vientiane, III.– VI.1963 (2ex., RGCM, 1ex., ZSM). Laos, Xieng Khouang Prov., Phonsavan env.k Ban Phu Nok Kok; 8. VIII 2006, leg. M. Geiser, h: ca. 1250m, Sekundärwald (MGCB). Myanmar: Carin Cheba, 900–1100m, L. Fea V XII-88; Museo Civ., Genova; Xenorthrius mouhoti Gorh. ; Museum Paris, coll. Gorham 1914 (MNHN). H te Birmanie, Etat de Momeit, 600m, Doherty 1890; Museum Paris, ed Coll., R. Oberthur (MNHN). Maymyo VI. 10, H.I. Andrewes; Orthrius (rel nov. gen.) nov. spec.; Andrewes Bequest., B.M. 1922-221.; Xenorthrius sp. , J.J. Menier det. 1982 (BMNH). nr. Kalaw 1000–1200m in alt, Shan Sta., Myanmar, 20–30. V. 2003, Y. Kusakabe (2ex, KSCT). SW-Burma, Shan State, Taunggy 1.-18.-6., 1997 leg. J. Kaláb (2ex., RGCM). Thailand: (Meo Village), Chiang Mai Prov. Thailand, 25th April 1987, S. Saito leg (KSCT). Doi Pui, Chiang Mai Prov. N. Thailand, 2–4. VII. 1979, W. Suzuki leg.; 28 (1ex., 1ex. 30.5.1979, RGCM, ex 30.5.1979, KSCT). N-Thailand, Meo Village, near Chiang Mai, V.1988 (RGCM). N. Thailand, Doi Inthanon Nat. Res., 1250m, 22.–31.V.2008, S. Murzin leg.; North Thailand, Doi Inthanon Nat. Res., 1250m, 22.–31.V.2008, Sergei Murzin leg (RGCM). Thailand, Chiangmai, Doi Pui, 12.Vi. 1985 (1ex., 2ex. 26.V.1985, RGCM). Thailand, Nan Pha Khab, 11.– 15.5.1993 Pacholatko & Dembicky (RGCM). Thailand, Prov. Loei, Phu Rua NP, 1100m, 17°30’N/101°21’E, 06.– 09.04.1999 leg. M. Riha (RGCM). NE Thailand, 1–15.V.1991, Mae Hong Son, Ban Huai Po, 800– 1600m, S. Bily leg (NMPC). NW Thailand 1–8.V- 1992 Mae Hong Son, Ban Si Lang 1200M, J. Horák leg (NMPC). NW Thailand 1.–7.V.1992 Mae Hong Son, Ban Si Lang, 1000m, S. Bily leg (NMPC). NW. Thailand, 8.–17-V-1992, Mae Hong Son, Ban Huai Po, 1600m, S. Bily leg (2ex., NMPC). China: Xia-Cha-Yu, (1900–2600m), Cha- Yu County, Tibet, China, 1.–28- vii. 2004 m Li Jingke (JSBC). China, S-Yunnan, (Xishuangbanna), 23km W Jinghong, Na Ban Village, NNNR; N22.10,04 / E 100.39, 52, 680m 18.5.2008, valley, bah. stat. leg. A. Weigel (RGCM). China, S-Yunnan, (Xishuangbanna), 26km W Jinghong, Da Nuo You, NNNR; N22 12.41 E 100 38.29, 790m 24.V.2008 leg. A. Weigel H KF (RGCM). China, S-Yunnan, (Xishuangbanna), 26km W Jinghong, vic. Meng Son, NNNR; N 22.04 ,65 / 100.33,98, 14– 1600m, 30.5.2008, leg. A. Weigel, KF blossom, Castanopsis at tea plant (RGCM). China, S- Yunnan, (Xishuangbanna), 26km W Jinghong, vic. Na Ban, NNNR; N22 09.49 E 100 39.92, 750m 12.V.2008 traps, site leg. A. Weigel (RGCM). Museum Paris, Yunnan, H. Donkier 1906 (MNHN).

Measurements: (44 specimens measured) Average total length: 11.2mm, range: 9.1–13.0mm, average elytral length: 7.5mm, average elytral width: 3.2mm, average pronotal length: 3.1mm, average pronotal width: 2.4mm, average head width: 2.4mm.

Head: Black, cranium densely vested with shorter setae and few longer setae on frontal umbo and frons, punctation dense; mandibles black, slightly reddish; with long setae laterally; posterior part of clypeus dark red-brown to black, margins darkened, with large punctation and a few long setae laterally, smooth centrally; ventral part smooth, except wrinkles behind the eyes; antennae red-brown, lighter then head capsule, A9 to A11 forming a distinct club, male antennae reaching base of pronotum when laid back; gular sutures diverging apically, gular process narrow.

Thorax: Average pronotal length:width ratio 1.3:1; pronotum dark red-brown to black, pronotal arch somewhat lighter on top, vested with yellowish setae, pronotal arch with sparse and fine punctation, about one third of pronotal length, pronotum proper with coarse and dense punctation; prosternum dark red-brown to black, smooth; mesosternum dark red-brown to black, margins darkened, vested with yellowish setae, circularly elevated centrally; metasternum black, vested with fine setae, punctation sparse; anterior metasternal process with two strongly sclerotized, ventrally projecting, edges; scutellum oval, red-brown, margins darkened.

Elytra: Average length:width ratio 2.3:1; basal quarter black, often with one yellow macula on each elytron, a yellow fascia which is 8 to 11 punctures in length in second quarter, extending from lateral to sutural margin, postmedian fascia black, sometimes dark red-brown near suture, apex yellow, in some specimens the basal black area is reduced to a small black macula on each elytron, rectangular subcutaneous structures visible through yellow areas, vested with short decumbent and longer erect setae, punctation relatively large, striae 1 and 2 obsolete in middle of yellow fascia, other striae reaching black postmedian fascia, interstices between striae not exceeding one puncture diameter in length, interstices within striae smaller than one diameter of punctures; punctation often rasp-like in basal black fascia, slightly carinated between lateral striae in apical half.

Legs: Yellow, tarsi brown, tarsal pulvilli pale; metatibiae slightly bent, anterior and posterior face of each tibia carinate, carination red-brown, distinct, especially on metatibia.

Abdomen: Ventrites red-brown, lighter to the apex, punctation sparse; anterior margin of male pygidium slightly emarginate, extensions nearly as long as tergit; male ventrite 6 with broad V-shaped emargination. Male genitalia ( Fig. 37 ): Dorsal sinus slightly deeper and narrowed inside; phallus asymmetric, twisted anteriorly, tip stronger sclerotized, horizontal groove narrow; spicular fork dividing into two branches after one sixth of length.

Distribution: Myanmar, India, Thailand, Laos, southern China.

Seasonal occurrence: Collected from March to December.

Figures

FIGURE 37. Xenorthrius mouhoti: (A) Tegmen in ventral view, (B) phallus in ventral view, (C) tip of aedeagus in lateral view, (D) spicular fork, (E) male pygidium, (F) male ventrite 6 and distribution map.

FIGURE 67. Habitus photographs: Xenorthrius mouhoti (A), color variation of Xenorthrius mouhoti (B), Xenorthrius oblongopunctatus n. sp. (C), Xenorthrius pallidefasciatus (D), Xenorthrius perroti (E) and Xenorthrius pieli (F). Scale bars = 4mm.