Arenga caudata (Lour.) H.E.Moore (Introduced)
Arenga pinnata (Wurmb) Merr. (Assam to C. Malesia: Assam, Bangladesh, Cambodia, Malaya, Myanmar, Philippines, Sulawesi, Thailand; Introduced into: Andaman Is., Benin, China South-Central, China Southeast, Hainan, Hawaii, India, Lesser Sunda Is., Maluku, New Guinea, Trinidad-Tobago (from POWO))
Arenga (Arecaceae) page with images of species in efloraofindia : 2 posts by 2 authors.
If you find any mis-identification, pl. let us know. If anybody can send images of other species of this genera (for incorporation in the website), if any, it will be really nice.