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Pretty similar are:
Chelidonura sp. 01 which lacks the broad white band on the head-shield and lacks the minute white dots on the parapodia,
Chelidonura alexisi which lacks the broad white band on the head-shield and is densely covered with minute white spots (not only the outer surface of the parapodia).
Chelidonura sandrana which lacks the white band across head and has usually white and orange spots,.
More information on Chelidonura inornata are on Bill Rudman's Sea Slug Forum!
How to cite:
Köhler, E. (2016), published 24 June 2016, Chelidonura inornata Baba, 1949
available from https://www.Philippine-Sea-Slugs.com/Cephalaspidea/Chelidonura_inornata.htm