DragonflyPix

Tropical Whitetip (Episynlestes cristatus)

The Tropical Whitetip (Episynlestes cristatus) is a damselfly species of the family Synlestidae, which contains 6 species in Australia.

The identification key to the family Synlestidae consists of 8 couplets, 4 of which are pertinent to Episynlestes cristatus. 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.
 SynlestidaeTropical Whitetip
(Episynlestes cristatus)
  • Synlestidae: Key couplet 1 of 8

  • ○ Anal appendages in both sexes and at least segment 10 of female substantially white

    ⇒ genus: Episynlestes
  • a ↑
  • Synlestidae: Key couplet 3 of 8

  • couplet drawing
  • ● Superior anal appendages with very conspicuous dorsal lobe
  • b ↑
  • Synlestidae: Key couplet 4 of 8

  • couplet drawing
  • ● Inner branch of superior anal appendages bifid

    ⇒ species: Tropical Whitetip (Episynlestes cristatus)
  • b ↑
  • Synlestidae: Key couplet 5 of 8

  • ○ Smaller species, hindwing generally shorter than 30 mm
    ○ Pterostigma 1.5-1.9 mm
    ○ North from Paluma area

    ⇒ species: Tropical Whitetip (Episynlestes cristatus)
  • a ↑
1  
  • Synlestidae: Key couplet 1 of 8

  • ○ Anal appendages in both sexes and at least segment 10 of female substantially white

    ⇒ genus: Episynlestes
a ↑
b ↓
  • ○ Anal appendages in both sexes and at least segment 10 of female substantially dark

    ⇒ genus: Synlestes

2 Male only
  • Synlestidae: Key couplet 3 of 8

  • couplet drawing
  • ● Superior anal appendages lacking conspicuous dorsal armature

    ⇒ species: Southern Whitetip (Episynlestes albicauda)
a ↑
b ↓
  • couplet drawing
  • ● Superior anal appendages with very conspicuous dorsal lobe

3 Male only
  • Synlestidae: Key couplet 4 of 8

  • couplet drawing
  • ● Inner branch of superior anal appendages with step-like notch on outer side

    ⇒ species: Intermediate Whitetip (Episynlestes intermedius)
a ↑
b ↓
  • couplet drawing
  • ● Inner branch of superior anal appendages bifid

    ⇒ species: Tropical Whitetip (Episynlestes cristatus)

4  
  • Synlestidae: Key couplet 5 of 8

  • ○ Smaller species, hindwing generally shorter than 30 mm
    ○ Pterostigma 1.5-1.9 mm
    ○ North from Paluma area

    ⇒ species: Tropical Whitetip (Episynlestes cristatus)
a ↑
b ↓
  • ○ Larger species, hindwing generally longer than 30 mm
    ○ Pterostigma 1.8-2.2 mm
    ○ South from Eungella area

Australian distribution