DragonflyPix

Eungella Darner (Austroaeschna eungella)

The Eungella Darner (Austroaeschna eungella) 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, 8 of which are pertinent to Austroaeschna eungella. 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 BrachytronidaeEungella Darner
(Austroaeschna eungella)
  • Telephlebiidae: Key couplet 1 of 37

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

  • couplet drawing
  • ○ Wings hyaline
    ● Two to four, occasionally five, cells in triangles and hypertriangles
  • b ↑
  • Telephlebiidae: Key couplet 11 of 37

  • couplet drawingcouplet drawing
  • ● Both wings with a single supplementary radial vein (Rspl)
    ● Posterior angle of hindwing triangle and 1A joined by a short crossvein
  • b ↑
  • Telephlebiidae: Key couplet 12 of 37

  • couplet drawingcouplet drawing
  • ● Male with three or fewer, or without, distinct longitudinal dorsal ridges on segment 10
    ○ Anal appendages of female shorter than to slightly longer than segment 10
    ● Supra-anal plate rounded to subtriangular

    ⇒ genus: Austroaeschna and Dromaeschna
  • a ↑
  • Telephlebiidae: Key couplet 13 of 37

  • ○ Abdominal segments 9 and 10 and anal appendages largely dark brown or black
  • b ↑
  • Telephlebiidae: Key couplet 14 of 37

  • couplet drawing
    couplet drawing
  • ● Synthorax in front of mesopleural suture with a single yellow or yellowish green stripe over virtually its entire length on each side and, commonly, a small spot of the same colour beside it, near its upper end
    ● Abdominal terga 3-8 (male) or 3-7 (female) with one pair of pale spots, widely separated at base of segment

    ⇒ genus: Austroaeschna
  • a ↑
  • Telephlebiidae: Key couplet 15 of 37

  • couplet drawingcouplet drawing
  • ● Male inferior appendage scoop-shaped, broad, when seen from above extending almost to inner base of superior appendage
    ● Hind corners of occipital triangle of female unarmed or with small, upright or diverging tooth on each side
  • a ↑
  • Telephlebiidae: Key couplet 16 of 37

  • couplet drawingcouplet drawing
  • ● Occiput smaller and predominantly dark
    ● Postoccipital lobes of female wide, subtriangular
    ● Male superior anal appendages with tip almost symmetrical

    ⇒ species: Eungella Darner (Austroaeschna eungella)
  • 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 11 of 37

  • couplet drawingcouplet drawing
  • ● Both wings with two supplementary radial veins (Rspl1 and Rspl2)
    ● Posterior angle of hindwing triangle meeting 1A

    ⇒ species: Thylacine Darner (Acanthaeschna victoria)
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Both wings with a single supplementary radial vein (Rspl)
    ● Posterior angle of hindwing triangle and 1A joined by a short crossvein

4  
  • Telephlebiidae: Key couplet 12 of 37

  • couplet drawingcouplet drawing
  • ● Male with three or fewer, or without, distinct longitudinal dorsal ridges on segment 10
    ○ Anal appendages of female shorter than to slightly longer than segment 10
    ● Supra-anal plate rounded to subtriangular

    ⇒ genus: Austroaeschna and Dromaeschna
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Male with five distinct longitudinal dorsal ridges on segment 10
    ○ Anal appendages of female at least twice as long as segment 10 (sometimes broken, thus appearing short)
    ● Supra-anal plate ending in long prominent spine

5  
  • Telephlebiidae: Key couplet 13 of 37

  • ○ Abdominal segments 9 and 10 and anal appendages bright ochreous or rusty red-brown
    ○ Synthorax dark brown with jade green markings, all but last abdominal segments dark brown and ochreous

    ⇒ species: Ochre-Tipped Darner (Dromaeschna weiskei)
a ↑
b ↓
  • ○ Abdominal segments 9 and 10 and anal appendages largely dark brown or black

6  
  • Telephlebiidae: Key couplet 14 of 37

  • couplet drawing
    couplet drawing
  • ● Synthorax in front of mesopleural suture with a single yellow or yellowish green stripe over virtually its entire length on each side and, commonly, a small spot of the same colour beside it, near its upper end
    ● Abdominal terga 3-8 (male) or 3-7 (female) with one pair of pale spots, widely separated at base of segment

    ⇒ genus: Austroaeschna
a ↑
b ↓
  • couplet drawingcouplet drawingcouplet drawing
    couplet drawingcouplet drawing
    couplet drawing
    couplet drawingcouplet drawing
  • ● Front of synthorax with one or two pale stripes over virtually the entire length on each side, or pale patches with or without a long pale stripe
    ● Abdominal terga 3-8 either lacking basal pale marks, or with both basal and central or distal marks

    ⇒ genus: Austroaeschna and Dromaeschna

7  
  • Telephlebiidae: Key couplet 15 of 37

  • couplet drawingcouplet drawing
  • ● Male inferior appendage scoop-shaped, broad, when seen from above extending almost to inner base of superior appendage
    ● Hind corners of occipital triangle of female unarmed or with small, upright or diverging tooth on each side
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Male inferior appendage only slightly hollowed above, narrow, when seen from above occupying approximately central half of space between bases of superior appendages
    ● Hind corners of occipital triangle of female armed with pair of large, upright triangular flaps converging in midline

    ⇒ species: Carnarvon Darner (Austroaeschna muelleri)

8  
  • Telephlebiidae: Key couplet 16 of 37

  • couplet drawingcouplet drawing
  • ● Occiput large and predominantly pale
    ● Postoccipital lobes of female thin, finger-like, exceptionally missing
    ● Male superior anal appendages with tip asymmetrical

    ⇒ species: Forest Darner (Austroaeschna pulchra)
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Occiput smaller and predominantly dark
    ● Postoccipital lobes of female wide, subtriangular
    ● Male superior anal appendages with tip almost symmetrical

    ⇒ species: Eungella Darner (Austroaeschna eungella)

Australian distribution