L1 users: 1,370 (1991 census).
Kerala state: Palakkad district, Attapady sub-district.
None known. Separate from Alu Kurumba [xua] and Kurumba Kannada [kfi]. Despite dissimilarity between Kurumba, Muduga [udg], and Irula [iru], each group uses their mother tongue to communicate with each other. Lexical similarity: 82% with Muduga [udg]; 61%–70% with Irula [iru], 50% with Alu Kurumba [xua], 52% with Kurumba Kannada, 55% with Malayalam [mal], 58% with Tamil [tam].
Malayalam script [Mlym].
The least developed language group in Attapady. Thudukki variety is reportedly most pure. Hindu, traditional religion.