Calosoma (Caminara) davidis Géhin, 1885

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 "Calosoma (Caminaria) davidis martensi" (Paulus, 1971:16), with elithra slightly more elongated and parallel, and with slightly more transverse pronotum. However these characters dont appear to justify a taxonomic separation between the populations of Nepal and China.
Also Calosoma (Caminara) arrowianum (Breuning, 1934), which was described on a single specimen from southern Thibet "Zayul district, Atakang" (= Zayü county), near the Indian border, has to be referred to C. davidis. In fact, considering the scarce significance of the characters reported in the original description and comparing the numerous recent specimens coming from the same area, the specific distinction proposed between davidis and arrowianum appears unnecessary. Jeannel too (1940: 119), reporting the original description, without having seen the type, considered morphologically very close the two supposed species.
C. davidis is found in western China, including southern Thibet, in the neighboring Nepal and northern Myanmar.

Examined specimens and literature’s data
China. Hubei: Yichang (Ichang) (Breuning, 1927: 227), Jinjenshan (AVT); Shaanxi: Tai Bai Shan (AVT, SB); Sichuan: Mou Pin (type thibetanum MNHN), Jin-fu Shan (EM, AVT), Xichang (SB), Shimian (SB, EM), Ya’an (Ebay 2020), Xilingue Shan, Emei Shan, Wa Shan, Leshan (Deuve, 2013: 72), Weixi (Ouy-Sy) (Breuning, 1927: 227), Panzhihua (SB); Xizang: (= Tibet): Linzhi city (Nyingchi Pref.), Chayu (Zayü co.) (SB), Atakang (Zahyul co.) (type arrowianum, Jeannel, 1940: 119), Bomi (Deuve, 1997: 55), Yigong (Deuve, 1997: 55), Nyingtri (www.inaturalist.org); Yunnan: Pe Ye Tsing (= Yanfeng) (SB), Zhaotong (SB), Dali (Tali) (Jeannel, 194x0: 119), Shizong (Sze-Tsong), Luxi (Kwang-hsi-hien) (Breuning, 1927: 227)
Myanmar. Kachin, Chudo Razi 2800m (SB)
Nepal. Thakkhola (= Thak Khola, upper part of the Kali Gandaki valley) Jomsom (= Jomsom) 2750m. (type of martensi, Paulus, 1971: 20); 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. The Nepalese specimens were captured in cultivated fields using fall traps (Paulus, 1971: 20)
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)