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Tropical Rockmaster (Diphlebia euphoeoides)

The Tropical Rockmaster (Diphlebia euphoeoides) is a damselfly species of the family Diphlebiidae, which contains 5 species in Australia.

The identification key to the family Diphlebiidae consists of 9 couplets, 6 of which are pertinent to Diphlebia euphoeoides. 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.
 DiphlebiidaeTropical Rockmaster
(Diphlebia euphoeoides)
  • Diphlebiidae: Key couplet 2 of 9

  • couplet drawing
    couplet drawing
    couplet drawing
  • ● Terga 4-6 black above, at least in midline
  • a ↑
  • Diphlebiidae: Key couplet 3 of 9

  • couplet drawing
    couplet drawing
  • ● Terga 4-6 with or without blue basal spot on each side, no more than quarter length of tergum
  • b ↑
  • Diphlebiidae: Key couplet 4 of 9

  • couplet drawing
  • ● Basal spots on terga 4-6 usually very small and indistinct, or absent
    ○ North of Paluma-Eungella gap

    ⇒ species: Tropical Rockmaster (Diphlebia euphoeoides)
  • b ↑
  • Diphlebiidae: Key couplet 6 of 9

  • couplet drawingcouplet drawingcouplet drawing
    couplet drawing
  • ● Abdominal terga 4-7 with or without black mid-dorsal line
    ● Segments 8, 9 black with pale markings
  • b ↑
  • Diphlebiidae: Key couplet 7 of 9

  • couplet drawing
    couplet drawing
    couplet drawing
  • ● Dark mid-dorsal line on terga 2 and 3 considerably narrower than on terga 4-7, or missing, distal black dorsal patch on segments 4-6 more or less onion-shaped, rounded at sides
  • b ↑
  • Diphlebiidae: Key couplet 8 of 9

  • couplet drawing
  • ● Mid-dorsal stripe on tergum 3 a very narrow line, or lacking
    ○ North of Paluma-Eungella gap

    ⇒ species: Tropical Rockmaster (Diphlebia euphoeoides)
  • a ↑
1 Male only
  • Diphlebiidae: Key couplet 2 of 9

  • couplet drawing
    couplet drawing
    couplet drawing
  • ● Terga 4-6 black above, at least in midline
a ↑
b ↓
  • ○ Terga 4-6 largely blue or grey above, without broad, mid-dorsal black stripe

2 Male only
  • Diphlebiidae: Key couplet 3 of 9

  • couplet drawing
  • ● Terga 4-6 with blue patch on each side, more than half length of tergum

    ⇒ species: Arrowhead Rockmaster (Diphlebia nymphoides)
a ↑
b ↓
  • couplet drawing
    couplet drawing
  • ● Terga 4-6 with or without blue basal spot on each side, no more than quarter length of tergum

3 Male only
  • Diphlebiidae: Key couplet 4 of 9

  • couplet drawing
  • ● Basal spots on terga 4-6 usually very distinct
    ○ South of Paluma-Eungella gap

    ⇒ species: Sapphire Rockmaster (Diphlebia coerulescens)
a ↑
b ↓
  • couplet drawing
  • ● Basal spots on terga 4-6 usually very small and indistinct, or absent
    ○ North of Paluma-Eungella gap

    ⇒ species: Tropical Rockmaster (Diphlebia euphoeoides)

4 Female only
  • Diphlebiidae: Key couplet 6 of 9

  • couplet drawing
  • ● Abdominal terga 4-7 without black mid-dorsal line, or with line of darkening confined to dorsal ridge
    ● Segments 8-10 entirely black

    ⇒ species: Giant Rockmaster (Diphlebia hybridoides)
a ↑
b ↓
  • couplet drawingcouplet drawingcouplet drawing
    couplet drawing
  • ● Abdominal terga 4-7 with or without black mid-dorsal line
    ● Segments 8, 9 black with pale markings

5 Female only
  • Diphlebiidae: Key couplet 7 of 9

  • couplet drawing
  • ● Dark mid-dorsal line, if present, of almost uniform width on terga 2-7, except for transverse black bar on supplementary transverse carina, sometimes extending to end of segment

    ⇒ species: Whitewater Rockmaster (Diphlebia lestoides)
a ↑
b ↓
  • couplet drawing
    couplet drawing
    couplet drawing
  • ● Dark mid-dorsal line on terga 2 and 3 considerably narrower than on terga 4-7, or missing, distal black dorsal patch on segments 4-6 more or less onion-shaped, rounded at sides

6 Female only
  • Diphlebiidae: Key couplet 8 of 9

  • couplet drawing
  • ● Mid-dorsal stripe on tergum 3 a very narrow line, or lacking
    ○ North of Paluma-Eungella gap

    ⇒ species: Tropical Rockmaster (Diphlebia euphoeoides)
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Mid-dorsal stripe on tergum 3 narrow in front, broadening progressively towards swollen spot at end of segment
    ○ South of Paluma-Eungella gap

Australian distribution