DragonflyPix

Top End Dragon (Antipodogomphus dentosus)

The Top End Dragon (Antipodogomphus dentosus) 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, 6 of which are pertinent to Antipodogomphus dentosus. 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.
 GomphidaeTop End Dragon
(Antipodogomphus dentosus)
  • 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 ↑
  • Gomphidae: Key couplet 2 of 47

  • couplet drawing
  • ○ Abdominal terga 9-10 mainly black above
    ● Terga 3-5 with yellow mid-dorsal line, sometimes fused to anterior yellow ring
  • b ↑
  • Gomphidae: Key couplet 4 of 47

  • couplet drawing
  • ● Humeral stripe divided into three spots, almost equally spaced, the lowermost usually fused with outer end of collar
    ○ Abdominal tergum 9 with basal and apical yellow spots on each side
  • b ↑
  • Gomphidae: Key couplet 6 of 47

  • couplet drawing
  • ● Rear of occiput unarmed

    ⇒ species: Top End Dragon (Antipodogomphus dentosus)
  • b ↑
  • Gomphidae: Key couplet 7 of 47

  • couplet drawingcouplet drawing
  • ● Rear of occiput armed
  • b ↑
  • Gomphidae: Key couplet 8 of 47

  • couplet drawing
  • ● Each end of occipital margin armed with fused mass of four to five horizontal spines, with one to three free-standing spines immediately adjacent, centre of occipital margin free of spines

    ⇒ species: Top End Dragon (Antipodogomphus dentosus)
  • 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  
  • Gomphidae: Key couplet 2 of 47

  • couplet drawing
  • ○ Abdominal terga 9-10 reddish yellow
    ● Abdominal terga 4-5 with short, black mid-dorsal line, faint in very pale individuals, often fused with transverse black ring on supplementary transverse carina
a ↑
b ↓
  • couplet drawing
  • ○ Abdominal terga 9-10 mainly black above
    ● Terga 3-5 with yellow mid-dorsal line, sometimes fused to anterior yellow ring

3  
  • Gomphidae: Key couplet 4 of 47

  • couplet drawing
  • ● Humeral stripe reduced to two small, yellow patches: an upper, rounded spot below the antealar ridge and a central, short linear spot
    ○ Abdominal tergum 9 black

    ⇒ species: Southern Dragon (Antipodogomphus acolythus)
a ↑
b ↓
  • couplet drawing
  • ● Humeral stripe divided into three spots, almost equally spaced, the lowermost usually fused with outer end of collar
    ○ Abdominal tergum 9 with basal and apical yellow spots on each side

4 Male only
  • Gomphidae: Key couplet 6 of 47

  • couplet drawing
  • ● Rear of occiput armed with irregular row of horizontal spines

    ⇒ species: Spinehead Dragon (Antipodogomphus proselythus)
a ↑
b ↓
  • couplet drawing
  • ● Rear of occiput unarmed

    ⇒ species: Top End Dragon (Antipodogomphus dentosus)

5 Female only
  • Gomphidae: Key couplet 7 of 47

  • ○ Rear of occiput unarmed

    ⇒ species: Cape York Dragon (Antipodogomphus edentulus)
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Rear of occiput armed

6 Female only
  • Gomphidae: Key couplet 8 of 47

  • couplet drawing
  • ● Occipital armature consisting of a row of horizontal spines

    ⇒ species: Spinehead Dragon (Antipodogomphus proselythus)
a ↑
b ↓
  • couplet drawing
  • ● Each end of occipital margin armed with fused mass of four to five horizontal spines, with one to three free-standing spines immediately adjacent, centre of occipital margin free of spines

    ⇒ species: Top End Dragon (Antipodogomphus dentosus)

Australian distribution