Complex sentence: What may be another species has been named "Hyselodoris apolegma"; it looks quite similar to this species and may turn out to be merely a different color form of "H. bullocki".
Split into simpler sentences: What may be another species has been named "Hyselodoris apolegma"; it looks quite similar to this species. It may in fact turn out to be merely a different color form of "H. bullocki".