Phyllosphingia perundulans Swinhoe, 1897, Ann. Mag. nat. Hist. (6)19: 64. Type locality: [India, Meghalaya,] Jaintia Hills.
Note. Recent studies indicate that this taxon is a distinct species, with a degree of overlap in range with Phyllosphingia dissimilis dissimilis. Additionally, the work of Zolotuhin and Ryabov (2012) indicates that the isolated Vietnamese population may represent a third distinct species. However, with no molecular evidence available, the two authors have in the interim assigned a subspecific rank to the latter, namely Phyllosphingia dissimilis berdievi.
China: iii (Yunnan); v (Xizang/Tibet); ix (Guizhou).
Larval hostplants. Unknown, but almost certainly Juglandaceae.
China: Yunnan (Bahand; Adunzi, nr Dêqên; Simao/Pu'er); Xizang/Tibet (Gamtog; Baxoi County); Guizhou (Jiangkou); Hunan (Guzhang; Shangzhi); Guangdong (Nanling National Forest Park); ?Hainan (Sanya, Mt. Jianfengling).
The status of Phyllosphingia perundulans outside of Yunnan and Hunan is uncertain. The population in Guizhou is most probably Phyllosphingia perundulans but those recorded from Fujian (Longqi Shan), Guangdong and Guangxi could be either this species, Phyllosphingia dissimilis dissimilis or intermediate forms. Study of specimens from these provinces is necessary to resolve the problem.
Occurs from Nepal, east through northeastern India, Burma/Myanmar and northern Thailand, to southwestern China.
Holarctic; eastern Palaearctic region. Pleistocene refuge: Monocentric -- Yunnan refugium.