As the nasal and first supralabial are not fused anterior to the nostril, in Cogger this rules out impar. Based on this I am inclined to agree it could be inornata and change my id accordingly.
With the inter-nasal fully fused to the first post-nasal it's certainly D. impar. The partial fusion of the internasals to the first supralabial is far less consistent.
This highlights the issues trying to id based on obscure scale variations. I always thought is was impar anyway. Well picked up Stephen, I am happy to change this one to impar.