Naja (Wuster and Thorpe, 1996)

Weinell, Jeffrey L., Hooper, Errol, Leviton, Alan E. & Brown, Rafe M., 2019, Illustrated Key to the Snakes of the Philippines, Proceedings of the California Academy of Sciences 66 (1), pp. 1-49 : 30

Naja

Key to Philippine species.

1a. Dorsal body scales in 21–23 longitudinal rows at midbody; dorsal color uniformly light brown or olive...................................................... Naja philippinensis

1b. Dorsal body scales in 17–19 longitudinal rows at midbody; dorsal color black or dark brown........................................................................... 2

2a. A few anterior ventral body scales light yellow, followed by band of black that gradually fades posteriorly; 162–178 ventral body scales.............................. Naja samarensis

2b. Ventral body surface dark or light but without a distinctive black band on anterior portion; 178–189 ventral body scales........................................ Naja sumatrana