Eastern Pygmyfly (Nannophya dalei)

The Eastern Pygmyfly (Nannophya dalei) is a dragonfly species of the family Libellulidae, which contains 56 species in Australia.

The identification key to the family Libellulidae consists of 67 couplets, 6 of which are pertinent to Nannophya dalei. 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.
	Libellulidae	Eastern Pygmyfly (Nannophya dalei)	Libellulidae: Key couplet 1 of 67 ● Distal antenodal of forewing complete, both costal and subcostal sections present a ↑ Libellulidae: Key couplet 2 of 67 ● Hindwing lacking anal loop ⇒ genus: Nannophya a ↑ Libellulidae: Key couplet 3 of 67 ● Only one crossvein (Ac) in cubital space of hindwing b ↑ Libellulidae: Key couplet 5 of 67 ● Mid-dorsal dark line present on abdominal terga 2-3, sometimes more extensive ⇒ species: Eastern Pygmyfly (Nannophya dalei) a ↑ Libellulidae: Key couplet 7 of 67 ● Abdomen with irregular, dark mid-dorsal band b ↑ Libellulidae: Key couplet 8 of 67 ● Black stripe on metapleural suture much narrower at level of metastigma than in upper half ⇒ species: Eastern Pygmyfly (Nannophya dalei) a ↑
1			Libellulidae: Key couplet 1 of 67 ● Distal antenodal of forewing complete, both costal and subcostal sections present a ↑ b ↓ ● Distal antenodal of forewing incomplete, only the costal section present
2			Libellulidae: Key couplet 2 of 67 ● Hindwing lacking anal loop ⇒ genus: Nannophya a ↑ b ↓ ● Anal loop present
3			Libellulidae: Key couplet 3 of 67 ● Two to three crossveins in cubital space of hindwing (including Ac) ⇒ species: Australian Pygmyfly (Nannophya australis) a ↑ b ↓ ● Only one crossvein (Ac) in cubital space of hindwing
4		Male only	Libellulidae: Key couplet 5 of 67 ● Mid-dorsal dark line present on abdominal terga 2-3, sometimes more extensive ⇒ species: Eastern Pygmyfly (Nannophya dalei) a ↑ b ↓ ● Abdominal tergum 3 lacking mid-dorsal dark stripe
5		Female only	Libellulidae: Key couplet 7 of 67 ● Abdominal terga 2-4 pale in front of supplementary transverse carina, reddish brown behind ⇒ species: Scarlet Pygmyfly (Nannophya paulsoni) a ↑ b ↓ ● Abdomen with irregular, dark mid-dorsal band
6			Libellulidae: Key couplet 8 of 67 ● Black stripe on metapleural suture much narrower at level of metastigma than in upper half ⇒ species: Eastern Pygmyfly (Nannophya dalei) a ↑ b ↓ ● Black stripe on metapleural suture broad behind metastigma ⇒ species: Western Pygmyfly (Nannophya occidentalis)