DragonflyPix

Tiny Hunter (Austrogomphus pusillus)

The Tiny Hunter (Austrogomphus pusillus) is a dragonfly species of the family Gomphidae, which contains 35 species in Australia.

The identification key to the family Gomphidae consists of 47 couplets, 13 of which are pertinent to Austrogomphus pusillus. 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.
 GomphidaeTiny Hunter
(Austrogomphus pusillus)
  • Gomphidae: Key couplet 1 of 47

  • couplet drawingcouplet drawing
  • ● Generally no incomplete antenodal crossvein proximal to Ax1 in any wing
    ● End of abdomen not elongate, mid-dorsal length of abdominal tergum 9 less than 2.3 mm in male, 2.1 mm in female
  • b ↑
  • Gomphidae: Key couplet 10 of 47

  • couplet drawingcouplet drawing
  • ● Superior anal appendages parallel or divergent, not converging at tips, each bearing a long, curved ventrobasal branch
  • a ↑
  • Gomphidae: Key couplet 19 of 47

  • couplet drawing
    couplet drawing
    couplet drawing
  • ● Anterior of abdominal segments 3 and 4 with mid-dorsal yellow band, sometimes narrow, or entirely yellow
  • b ↑
  • Gomphidae: Key couplet 27 of 47

  • ○ Abdominal terga 9-10 yellow or pale reddish brown
    ○ Tergum 8 similar or with dark reddish brown to black distal half
  • a ↑
  • Gomphidae: Key couplet 27 of 47

  • ○ Abdominal terga 9-10 usually marked with black or chocolate brown
    ○ If yellow or reddish, then tergum 8 substantially black
  • b ↑
  • Gomphidae: Key couplet 28 of 47

  • ○ Hindwing shorter than 21.5 mm

    ⇒ genus: Austrogomphus
  • b ↑
  • Gomphidae: Key couplet 31 of 47

  • couplet drawing
  • ● Antehumeral stripe broadly fused with collar, forming inverted figure '7'
    ● Dark band along line of intersegmental suture of synthorax reduced to narrow line in front of and below metastigma

    ⇒ species: Tiny Hunter (Austrogomphus pusillus)
  • a ↑
  • Gomphidae: Key couplet 32 of 47

  • couplet drawingcouplet drawing
    couplet drawingcouplet drawing
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  • ● Metanepisternum substantially pale
    ● Pterostigma yellow, brown or black, its length more than 3.3 times its maximum width
  • b ↑
  • Gomphidae: Key couplet 33 of 47

  • couplet drawingcouplet drawing
  • ● Black and yellow or greenish-yellow, lacking lilac colouration
    ● Metepimeron posteriorly not margined with brown
  • b ↑
  • Gomphidae: Key couplet 35 of 47

  • couplet drawingcouplet drawing
  • ● Antehumeral stripe aslant, isolated or its lower end fused with collar
    ● Black mark on lower mesepimeron extending to level of, or engulfing, metastigma
    ● If not, metapleural suture lined with black

    ⇒ genus: Austrogomphus
  • b ↑
  • Gomphidae: Key couplet 39 of 47

  • ○ Abdominal segment 10 yellow, or black and yellow above
  • b ↑
  • Gomphidae: Key couplet 42 of 47

  • couplet drawingcouplet drawing
  • ● Antehumeral stripe broadly fused with collar, forming inverted figure '7'
    ● Black stripe along line of intersegmental suture of synthorax extending to just above metastigma, with or without small spot below subalar ridge
  • a ↑
  • Gomphidae: Key couplet 43 of 47

  • ○ Hindwing less than 22 mm long

    ⇒ species: Tiny Hunter (Austrogomphus pusillus)
  • b ↑
1  
  • Gomphidae: Key couplet 1 of 47

  • couplet drawingcouplet drawing
  • ● Incomplete (subcostal) antenodal crossvein proximal to Ax1 usually present in forewings, sometimes lacking in hindwings
    ● End of abdomen elongate, mid-dorsal length of abdominal tergum 9 more than 2.4 mm in male, 2.3 mm in female

    ⇒ genus: Antipodogomphus
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Generally no incomplete antenodal crossvein proximal to Ax1 in any wing
    ● End of abdomen not elongate, mid-dorsal length of abdominal tergum 9 less than 2.3 mm in male, 2.1 mm in female

2 Male only
  • Gomphidae: Key couplet 10 of 47

  • couplet drawingcouplet drawing
  • ● Superior anal appendages parallel or divergent, not converging at tips, each bearing a long, curved ventrobasal branch
a ↑
b ↓
  • couplet drawingcouplet drawing
    couplet drawingcouplet drawing
    couplet drawingcouplet drawing
  • ● Superior anal appendages converging at tips, bearing basal, ventral to lateral spine or toothed spur

3 Female only
  • Gomphidae: Key couplet 19 of 47

  • couplet drawing
  • ● Anterior part of abdominal segments 3 and 4, in front of supplementary transverse carina, with broad, mid-dorsal black patch or band
a ↑
b ↓
  • couplet drawing
    couplet drawing
    couplet drawing
  • ● Anterior of abdominal segments 3 and 4 with mid-dorsal yellow band, sometimes narrow, or entirely yellow

4 (part)
  • Gomphidae: Key couplet 27 of 47

  • ○ Abdominal terga 9-10 yellow or pale reddish brown
    ○ Tergum 8 similar or with dark reddish brown to black distal half
a ↑
b ↓
  • ○ Abdominal terga 9-10 usually marked with black or chocolate brown
    ○ If yellow or reddish, then tergum 8 substantially black

5 (part)
  • Gomphidae: Key couplet 27 of 47

  • ○ Abdominal terga 9-10 yellow or pale reddish brown
    ○ Tergum 8 similar or with dark reddish brown to black distal half
a ↑
b ↓
  • ○ Abdominal terga 9-10 usually marked with black or chocolate brown
    ○ If yellow or reddish, then tergum 8 substantially black

6  
  • Gomphidae: Key couplet 28 of 47

  • ○ Hindwing longer than 21.5 mm
a ↑
b ↓
  • ○ Hindwing shorter than 21.5 mm

    ⇒ genus: Austrogomphus

7  
  • Gomphidae: Key couplet 31 of 47

  • couplet drawing
  • ● Antehumeral stripe broadly fused with collar, forming inverted figure '7'
    ● Dark band along line of intersegmental suture of synthorax reduced to narrow line in front of and below metastigma

    ⇒ species: Tiny Hunter (Austrogomphus pusillus)
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Antehumeral stripe usually isolated from collar
    ● Dark band along line of intersegmental suture of synthorax complete

    ⇒ species: Pimple-Headed Hunter (Austrogomphus mjobergi)

8  
  • Gomphidae: Key couplet 32 of 47

  • couplet drawingcouplet drawing
  • ● Metanepisternum black, with small yellow dorsal spot
    ● Pterostigma black, swollen, its length less than 3.3 times its maximum width

    ⇒ species: Twinspot Hunter (Austroepigomphus praeruptus)
a ↑
b ↓
  • couplet drawingcouplet drawing
    couplet drawingcouplet drawing
    couplet drawing
  • ● Metanepisternum substantially pale
    ● Pterostigma yellow, brown or black, its length more than 3.3 times its maximum width

9  
  • Gomphidae: Key couplet 33 of 47

  • couplet drawingcouplet drawing
  • ● Brown and cream-coloured, with lilac colouration on side of synthorax, or brown and greenish yellow
    ● Lower half of metepimeron posteriorly margined with brown

    ⇒ genus: Zephyrogomphus
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Black and yellow or greenish-yellow, lacking lilac colouration
    ● Metepimeron posteriorly not margined with brown

10  
  • Gomphidae: Key couplet 35 of 47

  • couplet drawingcouplet drawing
  • ● Antehumeral stripe with inner margin almost parallel to dorsal carina, its lower end fused with collar
    ● Black mark on lower mesepimeron not extending to metastigma
    ● Metapleural suture not lined with black

    ⇒ genus: Austrogomphus
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Antehumeral stripe aslant, isolated or its lower end fused with collar
    ● Black mark on lower mesepimeron extending to level of, or engulfing, metastigma
    ● If not, metapleural suture lined with black

    ⇒ genus: Austrogomphus

11  
  • Gomphidae: Key couplet 39 of 47

  • ○ Abdominal segment 10 black above
a ↑
b ↓
  • ○ Abdominal segment 10 yellow, or black and yellow above

12  
  • Gomphidae: Key couplet 42 of 47

  • couplet drawingcouplet drawing
  • ● Antehumeral stripe broadly fused with collar, forming inverted figure '7'
    ● Black stripe along line of intersegmental suture of synthorax extending to just above metastigma, with or without small spot below subalar ridge
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Antehumeral stripe usually isolated from collar
    ● If fused, a black stripe present along all or most of line of intersegmental suture, interrupted for, at most, a third of length, above metastigma

13  
  • Gomphidae: Key couplet 43 of 47

  • ○ Hindwing more than 22 mm long

    ⇒ species: Yellow-Striped Hunter (Austrogomphus guerini)
a ↑
b ↓
  • ○ Hindwing less than 22 mm long

    ⇒ species: Tiny Hunter (Austrogomphus pusillus)

Australian distribution