● Three crossveins between sectors of arculus basal to fork of Rs in hindwing ● Bridge crossvein at subnodus ● Ovipositor short, less than half length of tergum 9
⇒ genus: Hemicordulia and Procordulia
b ↑
Corduliidae: Key couplet 3 of 11
● Top of frons yellow with dark T-mark, or black with pair of yellow spots
b ↑
Corduliidae: Key couplet 8 of 11
● Abdominal tergum 7 extensively black above, yellowish at sides