○ Smaller, with abdomen shorter than 42 mm, hindwings shorter than 35 mm ● Fewer than 27 postnodals
b ↑
Megapodagrionidae: Key couplet 2 of 31
● Generally three or more cells, rarely two in discoidal field between discoidal cell and level of subnodus ● Male superior anal appendages with ventral spur
⇒ genus: Austroargiolestes
a ↑
Megapodagrionidae: Key couplet 3 of 31
● Anterior frons, clypeus and labrum dark greenish brown to black
b ↑
Megapodagrionidae: Key couplet 6 of 31
● Median part to much of front of synthorax dark brown to black with pale to yellowish brown humeral stripe on each side, sometimes pruinescent
b ↑
Megapodagrionidae: Key couplet 7 of 31
● Humeral stripe not widened at upper end
b ↑
Megapodagrionidae: Key couplet 9 of 31
● Superior anal appendages with tip of ventral spur visible from above
a ↑
Megapodagrionidae: Key couplet 9 of 31
● Superior anal appendages with ventral spur not visible from above
b ↑
Megapodagrionidae: Key couplet 10 of 31
● Distal end of inner marginal ridge of superior appendages ending in sharp point above ventral spur
● Median part to much of front of synthorax dark brown to black, with pale to red-brown humeral stripe on each side, sometimes pruinescent
b ↑
Megapodagrionidae: Key couplet 15 of 31
● Pale stripe in front of mesopleural suture constricted near upper end, then broadened at tip, not obscured by pruinescence
a ↑
Megapodagrionidae: Key couplet 17 of 31
● Outer face of mandible largely pale
b ↑
Megapodagrionidae: Key couplet 18 of 31
● Uppermost point of mesanepisternal part of humeral stripe at mesopleural suture, the upper part of stripe thus appearing acutely tapered ● Sometimes obscured by pruinescence
b ↑
Megapodagrionidae: Key couplet 20 of 31
○ Ratio between length of hindwing and length of metafemur approximately 4.3 (range 4.0-4.6) ○ Mature adults with front of synthorax strongly pruinescent
b ↑
Megapodagrionidae: Key couplet 21 of 31
○ Pterostigma of mature adults brown to black ○ South-eastern New South Wales (south of Hunter River), Victoria