Langia zenzeroides formosana Clark, 1936, Proc. New Engl. zool. Club 15: 83. Type locality: Formosa [Taiwan, Nantou Hsien], Hori [Puli].
Wingspan: 120--150mm.
Unrecorded.
Taiwan: 20.ii (Taoyuan Hsien); iii-v (Kaohsiung Hsien; Nantou Hsien); iv (Nantou Hsien); 17.iv (Taoyuan Hsien).
OVUM: Unrecorded.
LARVA: Identical to that of Langia zenzeroides zenzeroides Moore, 1872.
PUPA: Unrecorded.
Larval hostplants. Recorded from Photinia serratifolia, Prunus campanulata and Prunus phaeosticta.
Unknown.
Taiwan: Hualien Hsien (Taroko National Park); Nantou Hsien (Jenai; Puli; Renluen, 1400m; Lushan Spa, 1200m); Taoyuan Hsien (Ming Chyr Forest, 1160m; Taoyuan City); Kaohsiung Hsien (Shanping, 640m); Taipei Hsien (Fushan; Wulai); Pingtung Hsien (Shitzu); Chiayi Hsien (Alishan, 2100m); Yilan Hsien (Fushan Botanical Garden, 700m).
Endemic to the mountains of Taiwan.
Holarctic; eastern Palaearctic region. Pleistocene refuge: Monocentric -- Taiwan refugium.