My examination of the specimen lead to this: Front margin of pronotum wthout numerous long bristles. Dorsal head surface with conspicuous yellow markings. Gills present on 7th abdominal segment. Frontoclypeal pattern with aboral and lateral marks separated.
Prosternites with both medial and lateral sections darkly pigmented - the lateral section a little ligther than the medial part. Both parts combined make a long plate. The ecdysial line on the ventral part of the head is shorter than half the width of the head. The frontoclypeal apotom has only 2 lateral light areas.

The front of the frontoclypeal apotom is not convex.
The lateral part of submentum is long and thin.