● Arculus in hindwing situated beyond distal antenodal crossvein by at least the length of subcostal part of antenodal ○ Very small damselflies, hindwing shorter than 14 mm
⇒ genus: Agriocnemis
a ↑
Coenagrionidae: Key couplet 3 of 54
● Inferior anal appendages almost the same length as, or shorter than, superiors
b ↑
Coenagrionidae: Key couplet 4 of 54
● Tips of superior appendages not converging
b ↑
Coenagrionidae: Key couplet 6 of 54
● Small black spot at upper end of metapleural suture
b ↑
Coenagrionidae: Key couplet 7 of 54
● Upper surface of superior appendage ending in short, stout tooth ○ Mature males covered in white pruinescence
⇒ species: Silver Wisp (Agriocnemis argentea)
a ↑
Coenagrionidae: Key couplet 8 of 54
● Posterior lobe of pronotum well developed
b ↑
Coenagrionidae: Key couplet 9 of 54
● Central part of posterior lobe of pronotum, if differentiated from rest, a single, upright flap, or depressed
b ↑
Coenagrionidae: Key couplet 10 of 54
● Central part of superior lobe of pronotum, if differentiated, a simple or trilobed flap, usually highest in midline
b ↑
Coenagrionidae: Key couplet 12 of 54
● Margins of central and lateral portions of posterior lobe of pronotum discontinuous, central portion ending behind lateral portion ○ From north-western Australia
⇒ species: Silver Wisp (Agriocnemis argentea)
a ↑
Coenagrionidae: Key couplet 12 of 54
● Margins of central and lateral portions of posterior lobe of pronotum continuous ○ From eastern and northern Australia
b ↑
Coenagrionidae: Key couplet 13 of 54
● Central portion of posterior lobe scarcely differentiated from lateral portions