Clanis undulosa Moore, 1879, Proc. zool. Soc. Lond. 1879: 387. Type locality: North China.
Wingspan: 100--120mm.
In the Russian Far East, a lowland species of deciduous woodland dominated by Quercus mongolica (Izerskiy, 1999b).
China: 24.vii (Shaanxi); ix (Shaanxi). North Korea: vii (Baekdu-san); vii (Jueul); 14-27.vii [(unstated locality)]. South Korea: 26.vii [(unstated locality)]. Russia: 12.vii-5.viii (Primorskiy Kray); 24.viii (Primorskiy Kray).
Park et al. (1999) give early June until early August as the flight period in Korea.
OVUM: Ivory-yellow, slightly oval (2.00 x 2.50mm), shiny and smooth (Bell & Scott, 1937).
LARVA: Full-fed 80--90mm.
PUPA: 50mm.
Larval hostplants. Unknown for the nominotypical subspecies. However, C. u. gigantea was recorded on Lespedeza in Guangdong (Mell, 1922b) and northeastern India (Bell & Scott, 1937). Monophagous in Guangdong on L. viatorum (Mell, 1922b) (which Mell, 1935, erroneously listed as L. formosa), which is also the favoured larval hostplant in the Yangtze Valley (Yang, 1978). The record on Ligustrum (Mathur & Balwant Singh, 1960) is almost certainly an error for the north american species Ceratomia undulosa (Walker).
Unknown.
China: Hebei; Beijing; Shaanxi (30km north of Huangling; Xunyang, 1380m).
Taiwan.
North Korea North Hamgyong Prov. (Jueul, 1500m; Cheongjin; Baekdu-san, 2500m; Chongjin).
South Korea: Kyonggi Prov. (Gwangleung; Cheongpyong; Soyo-san; Myungji-san); Kangwon Prov. (Seolak-san; Odae-san; Hoengsung; Chiak-san; Baekduk-san; Taebek-san; Chuncheon); North Chungchong Prov. (Jecheon); South Chungchong Prov. (Gyeryong-san; Chilgab-san); North Cholla (Jiri-san; Namwon); South Cholla Prov. (Jogye-san; Gwangyang; Gurye); North Kyongsang Prov. (Daegu; Gunwi; Naeyon-san; Juwang-san; Cheongyang-san; Youngcheon); South Kyongsang Prov. (Hamyang; Jinyang; Yeohang-san; Muhak-san; Jinju; Geoje-do; Namhae; Goseong; Sacheon; Sancheong; Ulsan; Hadong; Hapcheon).
Russia: Primorskiy Kray (Andreevka; Vityaz Bay; Khasan; Primorskiy; Gamov Peninsula).
The nominotypical subspecies occurs in the southern Russian Far East, the Korean Peninsula and northeastern China, as far as south and west as Shaanxi and Hebei. South from Sichuan (Baoxing), Hubei, Jiangxi (Guling) and Zhejiang (Tianmu Shan), it is replaced by C. u. gigantea (Rothschild), which ranges west to Nepal and south, through Thailand and Vietnam, to Peninsular Malaysia.
Holarctic; eastern Palaearctic region. Pleistocene refuge: Monocentric -- Sinopacific refugium.
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