1. Augmenting the torque, humeri with insertion hole fracture earlier, those without hole tolerate higher twisting angles.

2. Elytra narrower than pronotum at base, as wide as pronotum at apical 1/3; depressed between humeri and scutellum; lateral margins Bisinuate; apices separately rounded.

3. Pronotum: longer than wide, widest posteriorly, often narrowed anteriorly, narrower than elytra at humeri; convex; anterior margin straight, lateral margin straight, arcuate, sinuate or Bisinuate, posterior margin Bisinuate; punctation usually dense; a slender, usually slightly elevated strip lacking coarse punctures present in front of scutellum.

4. Posterior Circumflex humeral artery (Arteria Circumflexa posterior humeri) The posterior Circumflex humeral artery is one of two Circumflex humeral arteries that surround the surgical neck of the humerus.It arises from the third part of the axillary artery and supplies the shoulder joint and a number of its associated muscles.