Smerinthus decoratus Moore, 1872, Proc. zool. Soc. Lond. 1872: 568. Type locality: [India,] Sikkim.
Synonym. Smerinthus decoratus Moore, 1872.
Synonym. Marumba decoratus indochinensis Gehlen, 1933.
Synonym. Mimas strigfenestra Zhu & Wang, 1997.
Wingspan: 72mm. Female dark olive-brown. Forewing with outer margin highly excised between veins M1 and R5 and much angulated towards outer angle; suffused with pale pink. A large irregular median brown patch is present, bordered with pink on costa and partly including a pale reniform spot, beneath which is a dark brown 'inverted comma'-shaped mark. With two curved postmedian pink lines, the inner one waved near the inner margin; some diffused brown streaks near outer angle; a triangular brown-edged patch on costa before apex, with a short white streak below it. Hindwing with a broad black and narrow pink streak near anal angle (Bell & Scott, 1937).
China: 18.vii (Yunnan).
In Nepal in mid June at 1500m altitude.
OVUM: Unknown.
LARVA: In the final instar pale grey-green, with a pair of yellow dorso-lateral lines running from head to horn, the dorsal area between these lines greyer. With a faint yellow oblique side stripe running down and forward from the base of the horn. Head almost spherical, grey-green, with a pair of yellow cheek stripes. Whole body, head and horn granulose. True legs and horn dull reddish (Eitschberger & Ihle, 2019).
[Illustrated in Eitschberger & Ihle, 2019]
PUPA: Glossy mahogany brown; very like that of Marumba (Eitschberger & Ihle, 2019).
[Illustrated in Eitschberger & Ihle, 2019]
Larval hostplants. In Thailand on Bombax insigne Wall. (Eitschberger & Ihle, 2019).
Unknown.
China: Yunnan (Menghai, 950m; Mengla; Menglun, Xishuangbanna Botanical Garden).
Nepal, northeastern India (Sikkim, Assam, Arunachal Pradesh), southwestern China (Yunnan), northern Thailand, Laos (Champasak Province), Vietnam, Peninsular Malaysia and Indonesia (Sumatra).
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