Eastern Swamp Emerald (Procordulia jacksoniensis)

The Eastern Swamp Emerald (Procordulia jacksoniensis) 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, 6 of which are pertinent to Procordulia jacksoniensis. 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	Eastern Swamp Emerald (Procordulia jacksoniensis)	Corduliidae: Key couplet 1 of 11 ● Hypertriangles generally free b ↑ Corduliidae: Key couplet 2 of 11 ● 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 b ↑ Corduliidae: Key couplet 3 of 11 ● Top of frons brown or black with metallic blue-green reflections a ↑ Corduliidae: Key couplet 4 of 11 ● Black mid-dorsal band not strongly constricted at supplementary transverse carina on abdominal segments 6 and 7 ● Male superior appendage without spine b ↑ Corduliidae: Key couplet 5 of 11 ● Male with auricles ● Anal border of male hindwing angulated ● Mid-dorsal black stripe on female abdomen not constricted at supplementary transverse carina on segment 4 ⇒ genus: Procordulia b ↑ Corduliidae: Key couplet 6 of 11 ● Superior appendages of male slightly convergent, with strongly divergent tips ● Intersegmental membranes between abdominal terga 3-4 to 7-8 orange-brown ● Female occiput not swollen behind ⇒ species: Eastern Swamp Emerald (Procordulia jacksoniensis) b ↑
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
3			Corduliidae: Key couplet 3 of 11 ● Top of frons brown or black with metallic blue-green reflections a ↑ b ↓ ● Top of frons yellow with dark T-mark, or black with pair of yellow spots
4			Corduliidae: Key couplet 4 of 11 ● Black mid-dorsal band strongly constricted at supplementary transverse carina, near anterior end of abdominal segments 6 and 7 ● Male superior appendage with prominent, medioventral spine ⇒ species: Australian Emerald (Hemicordulia australiae) a ↑ b ↓ ● Black mid-dorsal band not strongly constricted at supplementary transverse carina on abdominal segments 6 and 7 ● Male superior appendage without spine
5			Corduliidae: Key couplet 5 of 11 ○ Male lacking auricles ● Anal border of hindwing rounded ● Mid-dorsal black stripe on female abdomen strongly constricted at supplementary transverse carina on segment 4 a ↑ b ↓ ● Male with auricles ● Anal border of male hindwing angulated ● Mid-dorsal black stripe on female abdomen not constricted at supplementary transverse carina on segment 4 ⇒ genus: Procordulia
6			Corduliidae: Key couplet 6 of 11 ● Superior appendages of male strongly convergent, with parallel or slightly divergent tips ● Intersegmental membranes between abdominal terga 3-4 to 7-8 dark brown or black ● Female occiput swollen behind ⇒ species: Western Swamp Emerald (Procordulia affinis) a ↑ b ↓ ● Superior appendages of male slightly convergent, with strongly divergent tips ● Intersegmental membranes between abdominal terga 3-4 to 7-8 orange-brown ● Female occiput not swollen behind ⇒ species: Eastern Swamp Emerald (Procordulia jacksoniensis)