DragonflyPix

Eastern Brown Tigertail (Archaeosynthemis orientalis)

The Eastern Brown Tigertail (Archaeosynthemis orientalis) is a dragonfly species of the family Synthemistidae, which contains 26 species in Australia.

The identification key to the family Synthemistidae consists of 26 couplets, 6 of which are pertinent to Archaeosynthemis orientalis. 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.
 SynthemistidaeEastern Brown Tigertail
(Archaeosynthemis orientalis)
  • Synthemistidae: Key couplet 1 of 26

  • ○ Dark markings, if present, confined to basal parts of wings
  • b ↑
  • Synthemistidae: Key couplet 2 of 26

  • couplet drawing
  • ● Generally one crossvein in median space, sometimes two in one or two wings
  • a ↑
  • Synthemistidae: Key couplet 3 of 26

  • couplet drawing
  • ● Labrum pale to brown, without black margin or midline
  • b ↑
  • Synthemistidae: Key couplet 5 of 26

  • couplet drawingcouplet drawingcouplet drawing
  • ● Front of synthorax dark without distinct markings, or black with one or two small pale spots on each side

    ⇒ genus: Archaeosynthemis
  • a ↑
  • Synthemistidae: Key couplet 6 of 26

  • couplet drawing
  • ● Pale intersegmental stripe on side of synthorax broken near centre
  • a ↑
  • Synthemistidae: Key couplet 7 of 26

  • ○ From south-eastern Australia

    ⇒ species: Eastern Brown Tigertail (Archaeosynthemis orientalis)
  • a ↑
1  
  • Synthemistidae: Key couplet 1 of 26

  • ○ Wings with dark brown spots at nodus

    ⇒ species: Tasmanian Spotwing (Synthemiopsis gomphomacromioides)
a ↑
b ↓
  • ○ Dark markings, if present, confined to basal parts of wings

2  
  • Synthemistidae: Key couplet 2 of 26

  • couplet drawing
  • ● Generally one crossvein in median space, sometimes two in one or two wings
a ↑
b ↓
  • couplet drawing
  • ● Generally two to five crossveins in median space of all wings

3  
  • Synthemistidae: Key couplet 3 of 26

  • couplet drawingcouplet drawing
  • ● Labrum with black margin, often also with black stripe in midline

    ⇒ genus: Tonyosynthemis
a ↑
b ↓
  • couplet drawing
  • ● Labrum pale to brown, without black margin or midline

4  
  • Synthemistidae: Key couplet 5 of 26

  • couplet drawingcouplet drawingcouplet drawing
  • ● Front of synthorax dark without distinct markings, or black with one or two small pale spots on each side

    ⇒ genus: Archaeosynthemis
a ↑
b ↓
  • couplet drawing
  • ● Front of synthorax dark with one dominant large pale mark on each side

    ⇒ species: Turquoise Tigertail (Austrosynthemis cyanitincta)

5  
  • Synthemistidae: Key couplet 6 of 26

  • couplet drawing
  • ● Pale intersegmental stripe on side of synthorax broken near centre
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Pale intersegmental stripe on side of synthorax unbroken

6  
  • Synthemistidae: Key couplet 7 of 26

  • ○ From south-eastern Australia

    ⇒ species: Eastern Brown Tigertail (Archaeosynthemis orientalis)
a ↑
b ↓
  • ○ From south-western Australia

    ⇒ species: Western Brown Tigertail (Archaeosynthemis occidentalis)

Australian distribution