Armourtail (Armagomphus armiger)

Armourtail (Armagomphus armiger)

Inhabits clear rapid streams

© 2011 DECCW, NSW; 2021 Ian Endersby and DragonflyPix.com

• Gomphidae: Key couplet 1 of 47

• 
• ● 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

• Gomphidae: Key couplet 10 of 47

• 
  
  
• ● Superior anal appendages converging at tips, bearing basal, ventral to lateral spine or toothed spur

• Gomphidae: Key couplet 11 of 47

• 
  
• ● Upper projection of bipartite sternum 11 lying outside base of superior anal appendage, its upper end turned to rear and toothed or sculptured

• Gomphidae: Key couplet 18 of 47

• 
  
• ● One crossvein between sectors of arculus proximal to fork of Rs in hindwing
  ● Superior appendages with lateroventral spine near base
  ○ From south-western Australia
  
  ⇒ species: Armourtail (Armagomphus armiger)

• Gomphidae: Key couplet 19 of 47

• 
• ● Anterior part of abdominal segments 3 and 4, in front of supplementary transverse carina, with broad, mid-dorsal black patch or band

• Gomphidae: Key couplet 20 of 47

• 
• ● Ovipositor less than half length of sternum 9

• Gomphidae: Key couplet 21 of 47

• 
• ● One crossvein between sectors of arculus proximal to fork of Rs in hindwing
  ○ From south-western Australia
  
  ⇒ species: Armourtail (Armagomphus armiger)