Offshore Emerald (Metaphya tillyardi)

The Offshore Emerald (Metaphya tillyardi) is a dragonfly species of the family Corduliidae, which contains 12 species in Australia.

The identification key to the family Corduliidae consists of 11 couplets, 2 of which are pertinent to Metaphya tillyardi. 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.
	Corduliidae	Offshore Emerald (Metaphya tillyardi)	Corduliidae: Key couplet 1 of 11 ● Hypertriangles generally free b ↑ Corduliidae: Key couplet 2 of 11 ● Two crossveins between sectors of arculus basal to fork of Rs in hindwing ● Bridge crossvein between subnodus and oblique vein ● Ovipositor long, spoon-like, extending to or beyond end of abdomen ⇒ species: Offshore Emerald (Metaphya tillyardi) a ↑
1			Corduliidae: Key couplet 1 of 11 ● Hypertriangles of both wings crossed ⇒ species: Metallic Tigerhawk (Pentathemis membranulata) a ↑ b ↓ ● Hypertriangles generally free
2			Corduliidae: Key couplet 2 of 11 ● Two crossveins between sectors of arculus basal to fork of Rs in hindwing ● Bridge crossvein between subnodus and oblique vein ● Ovipositor long, spoon-like, extending to or beyond end of abdomen ⇒ species: Offshore Emerald (Metaphya tillyardi) a ↑ b ↓ ● Three crossveins between sectors of arculus basal to fork of Rs in hindwing ● Bridge crossvein at subnodus ● Ovipositor short, less than half length of tergum 9 ⇒ genus: Hemicordulia and Procordulia