| frontal sulcus |
with diffuse margins |
with sharply marked margins |
| anterior region of frons (= frontal ‘rostrum’) |
abruptly, step-wise narrowed posteriorly |
gradually broadening posteriorly |
| tempora and neck region |
gradually confluent |
abruptly delimited |
| posterior tentorial pits |
closer to submental bulge |
closer to neck region |
| maxillary palpomere 4 |
with concave distal margin |
with convex distal margin |
| pronotum |
barrel-shaped |
cordiform |
| lateral pronotal foveae |
lacking |
present |
| lateral longitudinal pronotal sulci |
lacking |
present |
| median longitudinal pronotal sulcus |
lacking or faint |
sharply marked |
| mesoscutellar shield |
strongly elongate |
about as long as broad |
| submedian metaventral fovea just behind mesocoxal rest |
present |
lacking |
| basal elytral foveae |
lacking |
present |
| sutural and discal elytral stria |
lacking |
present |
| paired basal discal carinae on tergite IV |
lacking |
present |
| lateral foveae on tergite IV |
two pairs |
one pair |
| submedian foveae on sternite IV |
lacking |
present |