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Western Ringtail (Austrolestes aleison)

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PhotoID: AusDa001. Western Ringtail (Austrolestes aleison) - male
Western Ringtail (Austrolestes aleison) ♂

1 / 1; PhotoID: AusDa001 06/11/2006 11:11 F5.6 1/200 180mm ISO200 Canon30D -Crop -Flash MF
Capel Wetlands, Capel, WA [-33.556883°; 115.557250°]

Western Ringtail (Austrolestes aleison)

Australian distribution of Austrolestes aleison

Inhabits riverine pools, lakes and ponds, including temporary ponds

© 2011 DECCW, NSW and DragonflyPix.com

  • Lestidae: Key couplet 1 of 15

  • couplet drawing
  • ● Quadrilateral cell of hindwing more than 1.15 times, usually 1.3-1.5 times longer than that of forewing
b ↑
  • Lestidae: Key couplet 2 of 15

  • couplet drawingcouplet drawing
    couplet drawingcouplet drawingcouplet drawing
  • ● Front of synthorax unicolorous or striped, the stripe not expanded near centre
    ● Ac generally near Ax1, basal or distal, occasionally almost midway between Ax1 and Ax2

    ⇒ genus: Austrolestes
b ↑
  • Lestidae: Key couplet 5 of 15

  • couplet drawing
    couplet drawingcouplet drawing
  • ● Central part of pterostigma overlying one or more crossveins of adjoining row
    ● Ac closer to level of Ax1 than of Ax2, sometimes basal to Ax1
    ○ Abdominal tergum 2 with well-defined light and dark pattern, sometimes like that of dark A. insularis (see above), or substantially dark
b ↑
  • Lestidae: Key couplet 6 of 15

  • couplet drawingcouplet drawing
  • ● Pale humeral stripe narrow, with at most a small upper patch extending across mesopleural suture, not meeting subalar ridge
b ↑
  • Lestidae: Key couplet 8 of 15

  • couplet drawing
  • ● Humeral stripe not extending across mesopleural suture
b ↑
  • Lestidae: Key couplet 11 of 15

  • couplet drawing
  • ○ Abdominal tergum 2 without pale basal spot
    ● Superior appendages of male forcipate, converging at tips
b ↑
  • Lestidae: Key couplet 12 of 15

  • ○ Abdominal tergum 2 without pale mid-dorsal stripe
b ↑
  • Lestidae: Key couplet 13 of 15

  • couplet drawing
    couplet drawingcouplet drawing
  • ● Ac distal to Ax1 in forewing
    ● Abdominal terga 3-7 of male substantially dark, with pale basal rings
b ↑
  • Lestidae: Key couplet 14 of 15

  • couplet drawing
  • ● Pale ring at base of abdominal tergum 7 occupying approximately 10% of length of segment, or less
b ↑
  • Lestidae: Key couplet 15 of 15

  • couplet drawing
  • ○ From south-western Australia
    ● Dorsal mark on abdominal tergum 2 of male strongly constricted at centre, forming narrow stem

    ⇒ species: Western Ringtail (Austrolestes aleison)
b ↑