Zebra Vicetail (Hemigomphus comitatus)

Zebra Vicetail (Hemigomphus comitatus)

Inhabits streams and rivers, not necessarily in rainforest

© 2011 DECCW, NSW 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 concealed by basal, toothed spine of superior anal appendage
  ○ From eastern and northern Australia
  
  ⇒ genus: Hemigomphus

• Gomphidae: Key couplet 12 of 47

• 
• ● Abdominal sternites 7 and/or 8 each with pair of strong, central setal tufts protruding below ventral carina

• Gomphidae: Key couplet 13 of 47

• 
  
• ● Tip of superior appendage abruptly folded inward
  ● Setal tufts present or absent on sternite 7

• Gomphidae: Key couplet 16 of 47

• 
• ● Setal tufts lacking from sternite 7
  
  ⇒ species: Zebra Vicetail (Hemigomphus comitatus)

• 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

• 
• ● Two or three (occasionally one) crossveins between sectors of arculus proximal to fork of Rs in hindwing
  ○ From eastern and northern Australia
  
  ⇒ genus: Hemigomphus

• Gomphidae: Key couplet 22 of 47

• 
• ● Occiput armed with central, more or less upright spine

• Gomphidae: Key couplet 23 of 47

• 
• ● Occiput spine stout, irregular conical, slanting rearwards
  
  ⇒ species: Zebra Vicetail (Hemigomphus comitatus)