Clanis hawkeri Joicey & Talbot, 1921, Entomologist 54: 106. Type locality: French Indo-China [Laos/Cambodia/Vietnam].
Synonym. Clanis hawkeri Joicey & Talbot, 1921.
Found at altitudes between 888 and 2800m.
China: 7.vi (Yunnan; Hainan).
In Thailand, O. hawkeri flies between late March and early May at the end of the dry season (I. J. Kitching, unpublished data).
OVUM: Unknown.
LARVA: Two final instar colour forms are illustrated by Eitschberger & Ihle (2019). In the paler form, ground colour medium grey-green, with a continuous pale yellow (above) and black (below) spiracular line running from segments 4 to 11. Body paler (more yellowish-white) above this, more so dorsally; duller below this. Horn and head the same colour as the body, the horn more yellow, the head with pronounced black cheeks. A yellow oblique side stripe runs down and forward from the base of the horn to the spiracular line. Clypeus outlined in yellow, with fine spots of the same colour covering the entire body. True legs dull red; spiracles white, ringed with black.
In the darker form more black pigmentation is noticable, with black at the base of the horn, along the oblique lateral stripe, and ventrally. The body above the spiracular line paler, almost white. Head and anal claspers almost entirely black (Eitschberger & Ihle, 2019).
[Illustrated in Eitschberger & Ihle, 2019]
PUPA: Rugose, dull mahogany brown, tapering both dorsally and ventrally. Similar to that of Mimas tiliae (Linnaeus, 1758) (Eitschberger & Ihle, 2019).
[Illustrated in Eitschberger & Ihle, 2019]
Larval hostplants. In Thailand on species of Dalbergia (Eitschberger & Ihle, 2019).
Unknown.
China: Yunnan (Shuangjiang, 888m); Hainan (Limu Ling).
China (Yunnan, Hainan), northern Thailand (Jeenthong, Teawkul & Jaitrong, 2021), Laos (Khammouan Province) and northern/central Vietnam (Inoue, Kennett & Kitching, [1996] 1997; Le & Vu, 2024).
Holarctic; eastern Palaearctic region. Pleistocene refuge: Monocentric -- Yunnan refugium.
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