Hexafrenum collaris (Swinhoe, 1904)

Hyperaeschra collaris Swinhoe, 1904; 14: 132.

Allodonta (Hexafrenum) collaris; Schintlmeister, 2013; 11: 23.

TL: Khasi Hills [Meghalaya, India]; TD: NHMUK

Material Examined: 2 ♂♂, Uttarakhand, Uttarkashi dist., Govind WLS, TK28, 2800 m, 31.0626°N; 78.2635°E, 14. vi. 2012, leg. A.K. Sanyal ; 1 ♂, West Bengal, Kalimpong dist., Neora Valley NP, Rishap, 2136 m, 27.1073°N; 88.6512°E, 05. ix. 2016, leg. K. Bhattacharyya & Team.

Distribution: India: Uttarakhand, West Bengal, Arunachal Pradesh, Assam, Meghalaya. Elsewhere: China (Yunnan), Myanmar, Nepal, Thailand.

Note: The type species Hyperaeschra collaris was placed as a synonym of Allodonta sikkima (Moore, 1879) (now valid as Hexafrenum sikkima) by Savela (2019). Further investigations revealed that Schintlmeister (2013) erected Hexafrenum collaris as a valid species, therefore it is now being added to the existing list of Indian Notodontidae . Furthermore, previous distributions were only from NE India. Our primary data adds Western and Central Himalayan distribution for the species.