6. Caltoris brunnea caere (de Niceville, 1891) (Dark-branded Swift)

Remarks. This species is very rare throughout the state. After searching for several years, one male individual was recorded while nectaring on Chromolaena odorata in Panisagar (24°17’38” N & 92°9’27” E, ca. 10 m above msl.). This sighting was made on 28.xii.2019.

Current known distribution. Myanmar, Bangladesh, India (Sikkim to Northeast India) (Van Gasse 2013; Varshney & Smetacek 2015).