Comprehensive explorations were conducted along the Naga- Schuppen thrust belt of Northeast India, a hydrocarbon province of Southeast Asia, during the years 2021-2023 which revealed altogether 7 new distributional records of freshwater Euglenophycean species for India. Out of the 7 identified taxa, Phacus corculum, Menoidium tremulum, Trachelomonas crispa, Trachelomonas corniformis, Trachelomonas nadsonii and Trachelomonas rugulosa var. obliqua are found to be newly reported algal species not only from India but from the entire Southeast Asia province. All the reported Euglenophyte flora belongs to 2 classes, 2 orders and 3 families. In addition, the systematic accounts of all these species are discussed in detail.