Calosoma (Caminara) davidis Géhin, 1885

Calosoma lugens var. Davidis Géhin, 1885: 61 (Typus: Mou-Pin; coll. Oberthur, Muséum National d'Histoire Naturelle, Paris)
Calosoma thibetanum Farmaire, 1887: 92 (type: Mou Pin; Muséum National d'Histoire Naturelle, Paris)
Calosoma (Caminara) davidis, Breuning, 1927: 226
Calosoma (Campalita) arrowianum Breuning, 1934b: 98 (type: Atakang; British Museum of Natural History, London)
Catasoma thibetanum, Lapouge, 1930: 98
Campalita davidi, Jeannel, 1940: 119
Campalita arrowianum, Jeannel, 1940: 119
Calosoma (Caminaria) davidis martensi Paulus, 1971: 16 (type: W. Nepal, Jomosom 2750m.)
Caminara davidi, Basilewski, 1972: 37
Calosoma (Campalita) davidi, Deuve, 1997: 55
Calosoma (Campalita) davidis, Bousquet et al., 2003:120
Calosoma (Campalita) davidi, Lorenz, 2005: 69

Length 22-28 mm., C. davidis has a large, transverse, pronotum with sligthly angular sides. Its elytral sculpture is of "pentaploïde" type as it has two tertiary intervals on each sides of a secondary one and it is of "hétérodyname" type, as the intervals are not equal in width and height. In fact the primary intervals of C. davidis consist in series of chain-like elevations with opaque foveae of the same dark color as the rest of elytra, the secondary intervals, just raised but still visible, are represented by series of aligned grains, while the tertiary ones are transformed into disorderly graininess.
From Nepal has been described an isolated population: "Calosoma (Caminaria) davidis martensi" (Paulus, 1971:16), with elithra slightly more elongated and parallel, and slightly more transverse pronotum. However these characters dont appear to justify a taxonomic separation between the populations of Nepal and China.
To C. davidis most probably, is to be referred also Calosoma (Caminara) arrowianum (Breuning, 1934), which was described on a single specimen from southern Thibet, between Sichuan and Nepal borders, and that already Jeannel (1940: 119), reporting the original description, has considered morphologically very close to this species.
C. davidis is found in western China, including southern Thibet, Nepal and northern Myanmar.

Examined specimens and literature’s data
Myanmar: Kachin, Chudo Razi 2800m (SB)
China. Xizang (= Tibet): Linzhi city (Nyingchi Pref.), Chayu (Zayü co.) (SB), Atakang, Zayü County (type arrowianum), Mou Pin (type thibetanum MNHN); Bomi (Deuve, 1997: 55); Yigong (Deuve, 1997: 55). Yunnan: Pe Ye Tsing (= Yanfeng) (SB), Zhaotong (SB). Shaanxi: Tai Bai Shan (AVT, SB). Sichuan: Jin-fu Shan (EM, AVT), Xichang (SB); Shimian (SB, EM); Hubei: Yichang (Deve, 1997: 55), Jinjenshan, 1500 m., VI.93 1 ♂ (AVT)
Nepal: Takkola graben, Jomosom 2750m. (type of martensi); Kali Gandaki valley: Kagbeni 2800m (JS), Marpha 2650m (JS); C. Nepal, Dzhonston (SB).

Notes: Winged. Active individuals were captured from May to July, during the raining season.
We must note that the species has been described as C. Davidis without any explicit dedication. Starting from Jeannel (1940) it has been sometimes referred to as C. Davidi. The name given by the author is properly formed in accordance with the rules of the International Code of Zoological Nomenclature (art 31.1.1.), corresponding apparently to the genitive case of the Latin name of the biblical hero David, and the prevailing usage rule (art. 23.9.1) does not seem applicable in this case. Therefore C. davidis is the only name that must be used.

Calosoma (Caminara) davidis
Géhin, 1885
Central Nepal, Dzhonston, 9.5.96, Cherniakovsky lgt.
Calosoma (Caminara) davidis
Géhin, 1885
Central Nepal, Dzhonston, 9.5.96, Cherniakovsky lgt.
Calosoma (Caminara) davidis
Géhin, 1885
China: Yunnan, Pe Ye Tsing
Calosoma (Caminara) davidis
Géhin, 1885
China: Yunnan, Pe Ye Tsing
Calosoma (Caminara) davidis
Géhin, 1885
Mou Pin, A David
(holotype of Calosoma thibetanum Farmaire, 1887)
(coll. Muséum National d'Histoire Naturelle, Paris)

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