Cryptophyllium, the hidden leaf insects – descriptions of a new leaf insect genus and thirteen species from the former celebicum species group (Phasmatodea, Phylliidae)

Live Cryptophyllium oyae males from additional, non-type localities A from Vietnam: Ha Giang, Dung Ba Commune, observed and photographed by Chien C. Lee (Malaysia) in January 2020 B from Thailand: Nan Province, Bo Kluea Tai District observed and photographed by Tatsatorn Dharithai (Thailand) in September 2019 C from Thailand: Chiang Mai Province, San Ku Ruins, observed and photographed by Rob Thacker (United Kingdom) in January 2021.