● Generally no incomplete antenodal crossvein proximal to Ax1 in any wing ● End of abdomen not elongate, mid-dorsal length of abdominal tergum 9 less than 2.3 mm in male, 2.1 mm in female
b ↑
Gomphidae: Key couplet 10 of 47
● Superior anal appendages parallel or divergent, not converging at tips, each bearing a long, curved ventrobasal branch
a ↑
Gomphidae: Key couplet 19 of 47
● Anterior of abdominal segments 3 and 4 with mid-dorsal yellow band, sometimes narrow, or entirely yellow
b ↑
Gomphidae: Key couplet 27 of 47
○ Abdominal terga 9-10 usually marked with black or chocolate brown ○ If yellow or reddish, then tergum 8 substantially black
b ↑
Gomphidae: Key couplet 32 of 47
● Metanepisternum substantially pale ● Pterostigma yellow, brown or black, its length more than 3.3 times its maximum width
b ↑
Gomphidae: Key couplet 33 of 47
● Black and yellow or greenish-yellow, lacking lilac colouration ● Metepimeron posteriorly not margined with brown
b ↑
Gomphidae: Key couplet 35 of 47
● Antehumeral stripe aslant, isolated or its lower end fused with collar ● Black mark on lower mesepimeron extending to level of, or engulfing, metastigma ● If not, metapleural suture lined with black
⇒ genus: Austrogomphus
b ↑
Gomphidae: Key couplet 39 of 47
○ Abdominal segment 10 black above
a ↑
Gomphidae: Key couplet 40 of 47
● Male superior appendage tapering evenly to sharp tip ● Rear of female occiput with flattened tooth on each side, behind inner margin of eye, its hind border irregularly serrated
b ↑
Gomphidae: Key couplet 41 of 47
● Antehumeral stripe broadly fused with collar ● Male occiput yellow, with darker edges, greatly swollen, forming blunt triangular horn ● Occipital margin of female swollen in centre