Calosoma (Ctenosta) orientale Hope, 1833

Length 25-26 mm. C. orientale has the same model of elytral sculpture than C. roeschkei and C. scabrosum. As C. scabrosum it is has the pronotum clearly narrowed behind but its widest part is a little after the middle and the basal dimples are rather shallow. Moreover the color of upper side of the body is black with faint greenish reflexes.
It is widespread trougth the Indian peninsula, including the island of Ceylon (coll. Migliaccio), and penetrates in China in Tibet and in Yunnan. Jeannel (1940: 128) cites it as present in the East Africa: Tanzania, Kenya, Eritrea, but all quotations of Jeannel for Africa should be related to C. roeschkei (=aethiops), as already noted by Rougemont (1976: 247).

Examined specimens and literature’s data:
China. Hainan: Wuzhi Shan (Deuve, 2013: 73); Xizang (Tibet): Linzhi City (SB); Yunnan (Deuve, 1997: 56): Shuangbai (Ebay 2022)
India. Bihar: Chapra (Andrewes, 1929: 69); Chhattisgarh: Kawardha (www.inaturalist.org/); Dehli (GP, SB); Gujerat: Vadodara, Bhavnagar, Godhra, Janmagar (www.inaturalist.org/); Karnataka: Bangalore, Chikkangalur Tabourel (RMCA); Madhya Pradesh: Panna Nat. Res. (EM, RS), Khandwa (Andrewes, 1929: 69); Maharashtra: Poona (=Pune) (type, Hope, 1833: 61), Melghat Tiger Reserve (Thakare & al., 2013: 175), Ahmadnagar (www.inaturalist.org/); Tamil Nadu: Chennai (Madras) (AMNH), Coimbatore (Chaudoir, 1869: 36, SB, EM, RS); Telangana: Bhadrahalam (TL); Uttar Pradesh: Rae Bareli (www.inaturalist.org/); West Bengal: (Andrewes, 1929: 69), Bengala (holotype of Calosoma squamigerum Chaudoir) (MNHN); Myanmar. Kachin: Nase 2.000m (SB)
Pakistan. Punjab: Chakval (SB); Baluchistan: Khusdar (SB); Sindh: Tharparkar (SB); Islamabad (SB)
Sri Lanka. Anuradhapura (EM)

Notes: Diurnal and nocturnal, winged, attracted to light at night. Active individuals were captured during the wettest periods that characterize the the climate, respectively, of central and northern India, from June to August, and of southern India, in October, November.

Calosoma (Ctenosta) orientale ♂ Hope, 1833 India: Dehli,18.8.96, Pontuale lgt.

Calosoma (Ctenosta) orientale ♀ Hope, 1833 India: Dehli,18.8.96, Pontuale lgt.

Calosoma (Ctenosta) orientale ♀ Hope, 1833 Bengala (holotype of Calosoma squamigerum Chaudoir) (coll.Muséum National d'Histoire Naturelle, Paris)