DragonflyPix

Pilbara Threadtail (Nososticta pilbara)

The Pilbara Threadtail (Nososticta pilbara) is a damselfly species of the family Disparoneurinae, which contains 12 species in Australia.

The identification key to the family Disparoneurinae consists of 23 couplets, 6 of which are pertinent to Nososticta pilbara. 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.
 DisparoneurinaePilbara Threadtail
(Nososticta pilbara)
  • Disparoneurinae: Key couplet 2 of 23

  • ○ Wing membrane hyaline or yellow
  • b ↑
  • Disparoneurinae: Key couplet 4 of 23

  • ○ Antehumeral stripes bright orange
  • a ↑
  • Disparoneurinae: Key couplet 5 of 23

  • couplet drawing
  • ● Antehumeral stripes broad, occupying much of mesanepisternum

    ⇒ species: Pilbara Threadtail (Nososticta pilbara)
  • a ↑
  • Disparoneurinae: Key couplet 13 of 23

  • couplet drawing
    couplet drawingcouplet drawing
    couplet drawingcouplet drawing
  • ● Posterior lobe of pronotum reflexed, scoop-shaped, strongly concave above, uniformly rounded to subtriangular with rounded apex
  • a ↑
  • Disparoneurinae: Key couplet 14 of 23

  • ○ Abdominal tergum 1 pale to dull orange
  • a ↑
  • Disparoneurinae: Key couplet 15 of 23

  • couplet drawing
  • ● Posterior lobe of pronotum shallowly concave, its edges almost straight in profile

    ⇒ species: Pilbara Threadtail (Nososticta pilbara)
  • a ↑
1 Male only
  • Disparoneurinae: Key couplet 2 of 23

  • ○ Central portion of the wings with brown to black markings
a ↑
b ↓
  • ○ Wing membrane hyaline or yellow

2 Male only
  • Disparoneurinae: Key couplet 4 of 23

  • ○ Antehumeral stripes bright orange
a ↑
b ↓
  • ○ Antehumeral stripes ochraceus, with whitish, pale green or blue

3 Male only
  • Disparoneurinae: Key couplet 5 of 23

  • couplet drawing
  • ● Antehumeral stripes broad, occupying much of mesanepisternum

    ⇒ species: Pilbara Threadtail (Nososticta pilbara)
a ↑
b ↓
  • couplet drawing
  • ○ Antehumeral stripes narrower, occupying outer half to two-thirds of mesanepisternum

    ⇒ species: Orange Threadtail (Nososticta solida)

4 Female only
  • Disparoneurinae: Key couplet 13 of 23

  • couplet drawing
    couplet drawingcouplet drawing
    couplet drawingcouplet drawing
  • ● Posterior lobe of pronotum reflexed, scoop-shaped, strongly concave above, uniformly rounded to subtriangular with rounded apex
a ↑
b ↓
  • couplet drawingcouplet drawing
    couplet drawing
    couplet drawingcouplet drawing
  • ● Posterior lobe of pronotum not scoop-shaped
    ● Apex, if defined, protuberant from lateral contour of lobe

5 Female only
  • Disparoneurinae: Key couplet 14 of 23

  • ○ Abdominal tergum 1 pale to dull orange
a ↑
b ↓
  • ○ Abdominal tergum 1 dark brown or black above

6 Female only
  • Disparoneurinae: Key couplet 15 of 23

  • couplet drawing
  • ● Posterior lobe of pronotum shallowly concave, its edges almost straight in profile

    ⇒ species: Pilbara Threadtail (Nososticta pilbara)
a ↑
b ↓
  • couplet drawing
  • ● Posterior lobe deeply concave, its edges strongly bowed in profile

    ⇒ species: Orange Threadtail (Nososticta solida)

Australian distribution