DragonflyPix

Northern Giant Darner (Austrophlebia subcostalis)

The Northern Giant Darner (Austrophlebia subcostalis) is a dragonfly species of the family Telephlebiidae and Brachytronidae, which contains 37 species in Australia.

The identification key to the family Telephlebiidae and Brachytronidae consists of 37 couplets, 3 of which are pertinent to Austrophlebia subcostalis. 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.

#FamilySpeciesCouplet No.
 Telephlebiidae and BrachytronidaeNorthern Giant Darner
(Austrophlebia subcostalis)
  • Telephlebiidae: Key couplet 1 of 37

  • couplet drawing
  • ● No crossveins in median space
  • b ↑
  • Telephlebiidae: Key couplet 9 of 37

  • couplet drawing
  • ○ Wings with dark band just behind anterior margin
    ● Six to twelve cells in triangles and hypertriangles

    ⇒ genus: Austrophlebia
  • a ↑
  • Telephlebiidae: Key couplet 10 of 37

  • couplet drawingcouplet drawing
  • ○ Fasciae of wings dark but not vivid olive brown, in female less strongly defined than in male
    ● Male superior anal appendages of approximately the same width from base to apex, their outer margins widely and evenly curved without any angulation
    ● Inferior appendage deeper and apically wider than in A. costalis
    ● Female dentigerous plate rather narrow and with apex truncate and bearing c. 6 teeth
    ● Anal appendages of female sharply pointed

    ⇒ species: Northern Giant Darner (Austrophlebia subcostalis)
  • b ↑
1  
  • Telephlebiidae: Key couplet 1 of 37

  • couplet drawing
  • ● Crossveins present in median space
a ↑
b ↓
  • couplet drawing
  • ● No crossveins in median space

2  
  • Telephlebiidae: Key couplet 9 of 37

  • couplet drawing
  • ○ Wings with dark band just behind anterior margin
    ● Six to twelve cells in triangles and hypertriangles

    ⇒ genus: Austrophlebia
a ↑
b ↓
  • couplet drawing
  • ○ Wings hyaline
    ● Two to four, occasionally five, cells in triangles and hypertriangles

3  
  • Telephlebiidae: Key couplet 10 of 37

  • couplet drawingcouplet drawing
  • ○ Dark fasciae of wings extensive and vivid reddish brown, very similar in both sexes
    ● Male superior anal appendages convergent, markedly narrower in basal one-third than more distally, their outer margins slightly angulated near midlength
    ● Inferior appendage rather shallow, with apex very narrow
    ● Female with dentigerous plate of ovipositor moderately wide and bearing 8-12 teeth
    ● Anal appendages of female not particularly pointed

    ⇒ species: Southern Giant Darner (Austrophlebia costalis)
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ○ Fasciae of wings dark but not vivid olive brown, in female less strongly defined than in male
    ● Male superior anal appendages of approximately the same width from base to apex, their outer margins widely and evenly curved without any angulation
    ● Inferior appendage deeper and apically wider than in A. costalis
    ● Female dentigerous plate rather narrow and with apex truncate and bearing c. 6 teeth
    ● Anal appendages of female sharply pointed

    ⇒ species: Northern Giant Darner (Austrophlebia subcostalis)

Australian distribution