| Compound eyes |
not contiugous, widely separated by a distance 2.5–3.0 times frontal ocellus width |
contiguous |
| Spots on forewing |
with one or two dark brown spots be- tween the Sc and R1 |
with red spot between the C and Sc |
| Arrangement of crossveins on forewing |
regularly or roughly arranged into 5–6 rows |
irregularly arranged |
| Tarsus of midleg |
longer than midtibia |
shorter than midtibia |
| Styliger plate |
convex medially with remarkable sub- lateral protuberances |
convex medially without or with tiny sublateral protuberances |
| Penes lobes |
almost totally fused |
almost totally fused |
| Female imago |
| Subgenital plate |
greatly elongated posteriorly |
not elongated |
| Subanal plate |
tongue-shape |
triangle |
| Nymph |
| Superlingua |
with slightly sharpened tip |
with extremely sharpened tip |