DragonflyPix

Swamp Flat-Tail (Austrothemis nigrescens)

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PhotoID: AusDr626. Swamp Flat-Tail (Austrothemis nigrescens) - male
Swamp Flat-Tail (Austrothemis nigrescens) ♂

1 / 9; PhotoID: AusDr626 13/12/2016 12:05 F8 1/800 180mm ISO400 Canon7D2 -Crop -Flash MF
Lake Leschenaultia, Chidlow, WA [-31.851444°; 116.250806°]
PhotoID: AusDr627. Swamp Flat-Tail (Austrothemis nigrescens) - male
Swamp Flat-Tail (Austrothemis nigrescens) ♂

2 / 9; PhotoID: AusDr627 13/12/2016 12:05 F8 1/800 180mm ISO400 Canon7D2 -Crop -Flash MF
Lake Leschenaultia, Chidlow, WA [-31.851444°; 116.250806°]
PhotoID: AusDr628. Swamp Flat-Tail (Austrothemis nigrescens) - male
Swamp Flat-Tail (Austrothemis nigrescens) ♂

3 / 9; PhotoID: AusDr628 13/12/2016 12:48 F8 1/320 180mm ISO400 Canon7D2 -Crop -Flash MF
Lake Leschenaultia, Chidlow, WA [-31.851444°; 116.250806°]
PhotoID: AusDr629. Swamp Flat-Tail (Austrothemis nigrescens) - male
Swamp Flat-Tail (Austrothemis nigrescens) ♂

4 / 9; PhotoID: AusDr629 13/12/2016 12:49 F8 1/400 180mm ISO400 Canon7D2 -Crop -Flash MF
Lake Leschenaultia, Chidlow, WA [-31.851444°; 116.250806°]
PhotoID: AusDr630. Swamp Flat-Tail (Austrothemis nigrescens) - male
Swamp Flat-Tail (Austrothemis nigrescens) ♂

5 / 9; PhotoID: AusDr630 13/12/2016 12:56 F8 1/800 180mm ISO400 Canon7D2 -Crop -Flash MF
Lake Leschenaultia, Chidlow, WA [-31.851444°; 116.250806°]
PhotoID: AusDr631. Swamp Flat-Tail (Austrothemis nigrescens) - male
Swamp Flat-Tail (Austrothemis nigrescens) ♂

6 / 9; PhotoID: AusDr631 13/12/2016 14:19 F8 1/320 180mm ISO200 Canon7D2 -Crop -Flash MF
Lake Leschenaultia, Chidlow, WA [-31.851444°; 116.250806°]
PhotoID: AusDr632. Swamp Flat-Tail (Austrothemis nigrescens) - male
Swamp Flat-Tail (Austrothemis nigrescens) ♂

7 / 9; PhotoID: AusDr632 13/12/2016 14:29 F8 1/500 180mm ISO400 Canon7D2 -Crop -Flash MF
Lake Leschenaultia, Chidlow, WA [-31.851444°; 116.250806°]
PhotoID: AusDr633. Swamp Flat-Tail (Austrothemis nigrescens) - male
Swamp Flat-Tail (Austrothemis nigrescens) ♂

8 / 9; PhotoID: AusDr633 13/12/2016 14:30 F8 1/500 180mm ISO400 Canon7D2 -Crop -Flash MF
Lake Leschenaultia, Chidlow, WA [-31.851444°; 116.250806°]
PhotoID: AusDr634. Swamp Flat-Tail (Austrothemis nigrescens) - male
Swamp Flat-Tail (Austrothemis nigrescens) ♂

9 / 9; PhotoID: AusDr634 13/12/2016 14:32 F8 1/400 180mm ISO400 Canon7D2 -Crop -Flash MF
Lake Leschenaultia, Chidlow, WA [-31.851444°; 116.250806°]

Swamp Flat-Tail (Austrothemis nigrescens)

Australian distribution of Austrothemis nigrescens

Inhabits lakes, permanent ponds and swamps

© 2011 DECCW, NSW and DragonflyPix.com

  • Libellulidae: Key couplet 1 of 67

  • couplet drawing
  • ● Distal antenodal of forewing complete, both costal and subcostal sections present
a ↑
  • Libellulidae: Key couplet 1 of 67

  • couplet drawing
  • ● Distal antenodal of forewing incomplete, only the costal section present
b ↑
  • Libellulidae: Key couplet 2 of 67

  • couplet drawingcouplet drawing
  • ● Anal loop present
b ↑
  • Libellulidae: Key couplet 9 of 67

  • couplet drawing
  • ● Anal loop well developed, generally stocking-shaped, usually closed at tip
b ↑
  • Libellulidae: Key couplet 14 of 67

  • ○ Not as above
b ↑
  • Libellulidae: Key couplet 15 of 67

  • couplet drawing
  • ● Base of hindwing triangle at or proximal to arculus
    ○ Top of frons, if metallic, dully so
b ↑
  • Libellulidae: Key couplet 20 of 67

  • ○ Smaller dragonflies, hindwing up to 40 mm long
    ○ Wings patterned or hyaline
b ↑
  • Libellulidae: Key couplet 21 of 67

  • couplet drawing
  • ● Subtriangle of forewing with three or more cells
b ↑
  • Libellulidae: Key couplet 24 of 67

  • couplet drawing
  • ● Forewing triangle crossed
b ↑
  • Libellulidae: Key couplet 27 of 67

  • couplet drawing
  • ● Small tongue-like evagination from central hind margin of eye

    ⇒ species: Swamp Flat-Tail (Austrothemis nigrescens) (part)
a ↑
  • Libellulidae: Key couplet 35 of 67

  • couplet drawing
  • ● Hindwing triangle free
b ↑
  • Libellulidae: Key couplet 39 of 67

  • ○ Not as above
b ↑
  • Libellulidae: Key couplet 40 of 67

  • couplet drawing
  • ● Base of hindwing triangle at or slightly proximal to arculus
b ↑
  • Libellulidae: Key couplet 41 of 67

  • couplet drawing
  • ● Tip of anal loop closed, the bounding veins meeting midvein one row of cells away from wing margin
b ↑
  • Libellulidae: Key couplet 45 of 67

  • couplet drawingcouplet drawing
  • ● Subtriangle of forewing with one to three cells, its basal side well-defined
a ↑
  • Libellulidae: Key couplet 46 of 67

  • ○ Smaller dragonflies, hindwing shorter than 38 mm
b ↑
  • Libellulidae: Key couplet 47 of 67

  • couplet drawing
  • ● Discoidal field of forewing, between triangle and level of origin of IR3, starting with two or three rows of cells, followed by two rows
b ↑
  • Libellulidae: Key couplet 49 of 67

  • ○ Hindwing shorter than 30 mm
b ↑
  • Libellulidae: Key couplet 51 of 67

  • couplet drawing
  • ● Small tongue-like evagination from central hind margin of eye

    ⇒ species: Swamp Flat-Tail (Austrothemis nigrescens) (part)
a ↑