Leptocoma is a genus of sunbirds found from tropical South Asia to Papua New Guinea. Its members are sometimes included in Nectarinia.
The name Leptocoma combines the Ancient Greek words leptos "delicate" or "fine" and kome "hair".

1/ Purple-throated sunbird (Hút mật họng hồng, Leptocoma sperata)
Earlier considered conspecific with Van Hasselt's sunbird (Leptocoma brasiliana)
The specific name sperata is Latin for "bride" or "betrothed".

2/ Copper-throated sunbird (Hút mật lưng đen, Leptocoma calcostetha)
The species name calcostetha originates from the words khalkos which means bronze; and stēthos which means breast.