The anuran family Ceratobatrachidae Boulenger, 1884 is represented by 102 currently recognized species belonging to four genera, viz. Alcalus Brown et al., 2015, Cornufer Tschudi, 1838, Liurana Dubois, 1987, and Platymantis G€unther, 1858 (Frost, 2023). Ceratobatrachids are widely distributed in the Philippines archipelago, Palau, Borneo, New Guinea, the Solomon-Bismarck-Admiralty archipelagos, the islands of Fiji, and in Myanmar, India, and China (Brown et al., 2015; Frost, 2023; Yan et al., 2016). Among the ceratobatrachid genera, only the members of Liurana are known from India, and comprise four known species from Arunachal Pradesh (Roy et al., 2018; Saikia & Sinha, 2019). Recently, based on the findings from DNA sequence data, Brown et al. (2015) erected the genus Alcalus to accommodate a few species that were earlier referred to as Ingerana Dubois, 1987. Currently, Alcalus is represented by five species distributed in Borneo, Philippines, Thailand, and Myanmar (Frost, 2023). During our recent field surveys in Namdapha Tiger Reserve, Arunachal Pradesh, India, we encountered a few populations of anuran species that resembled Alcalus morphologically but could not be assigned to any of the known species in the genus. Our molecular analyses using both mitochondrial and nuclear genes confirm its placement within Alcalus.The Indian population is different from all the known species in the genus Alcalus, which we describe as a new species herein.