○ Wings hyaline ● Two to four, occasionally five, cells in triangles and hypertriangles
b ↑
Telephlebiidae: Key couplet 11 of 37
● Both wings with a single supplementary radial vein (Rspl) ● Posterior angle of hindwing triangle and 1A joined by a short crossvein
b ↑
Telephlebiidae: Key couplet 12 of 37
● Male with three or fewer, or without, distinct longitudinal dorsal ridges on segment 10 ○ Anal appendages of female shorter than to slightly longer than segment 10 ● Supra-anal plate rounded to subtriangular
⇒ genus: Austroaeschna and Dromaeschna
a ↑
Telephlebiidae: Key couplet 13 of 37
○ Abdominal segments 9 and 10 and anal appendages largely dark brown or black
b ↑
Telephlebiidae: Key couplet 14 of 37
● Synthorax in front of mesopleural suture with a single yellow or yellowish green stripe over virtually its entire length on each side and, commonly, a small spot of the same colour beside it, near its upper end ● Abdominal terga 3-8 (male) or 3-7 (female) with one pair of pale spots, widely separated at base of segment
⇒ genus: Austroaeschna
a ↑
Telephlebiidae: Key couplet 15 of 37
● Male inferior appendage scoop-shaped, broad, when seen from above extending almost to inner base of superior appendage ● Hind corners of occipital triangle of female unarmed or with small, upright or diverging tooth on each side
a ↑
Telephlebiidae: Key couplet 16 of 37
● Occiput large and predominantly pale ● Postoccipital lobes of female thin, finger-like, exceptionally missing ● Male superior anal appendages with tip asymmetrical