Giant Petaltail (Petalura ingentissima)

The Giant Petaltail (Petalura ingentissima) is a dragonfly species of the family Petaluridae, which contains 5 species in Australia.

The identification key to the family Petaluridae consists of 4 couplets, 3 of which are pertinent to Petalura ingentissima. Click on the numbers on the right to display the corresponding couplets. Or click on the ALLin1 button to see all the relevant couplets together in a single, scrollable window.

#	Family	Species	Couplet No.
	Petaluridae	Giant Petaltail (Petalura ingentissima)	Petaluridae: Key couplet 1 of 4 ● Pale stripes present on front and sides of thorax b ↑ Petaluridae: Key couplet 2 of 4 ● Abdominal terga 3-7 with sharply-defined, pale basal and apical rings b ↑ Petaluridae: Key couplet 4 of 4 ● Anterior frons largely black ● Postclypeus generally black ⇒ species: Giant Petaltail (Petalura ingentissima) a ↑
1			Petaluridae: Key couplet 1 of 4 ○ Synthorax lacking stripes ⇒ species: Western Petaltail (Petalura hesperia) a ↑ b ↓ ● Pale stripes present on front and sides of thorax
2			Petaluridae: Key couplet 2 of 4 ● Abdomen with ill-defined, pale dorsal and lateral longitudinal stripes, and no pale basal or apical rings a ↑ b ↓ ● Abdominal terga 3-7 with sharply-defined, pale basal and apical rings
3			Petaluridae: Key couplet 4 of 4 ● Anterior frons largely black ● Postclypeus generally black ⇒ species: Giant Petaltail (Petalura ingentissima) a ↑ b ↓ ● Anterior frons largely yellow ● Postclypeus black with yellow spot each side ⇒ species: Beautiful Petaltail (Petalura pulcherrima)