DragonflyPix

Common Archtail (Nannophlebia risi)

The Common Archtail (Nannophlebia risi) is a dragonfly species of the family Libellulidae, which contains 56 species in Australia.

The identification key to the family Libellulidae consists of 67 couplets, 7 of which are pertinent to Nannophlebia risi. 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.
 LibellulidaeCommon Archtail
(Nannophlebia risi)
  • Libellulidae: Key couplet 1 of 67

  • couplet drawing
  • ● Distal antenodal of forewing complete, both costal and subcostal sections present
  • a ↑
  • Libellulidae: Key couplet 2 of 67

  • couplet drawingcouplet drawing
  • ● Anal loop present
  • b ↑
  • Libellulidae: Key couplet 9 of 67

  • couplet drawing
  • ● Anal loop rounded, poorly developed, of three to five cells
  • a ↑
  • Libellulidae: Key couplet 10 of 67

  • couplet drawing
  • ● Basal side of hindwing triangle close to or at arculus

    ⇒ genus: Nannophlebia
  • b ↑
  • Libellulidae: Key couplet 11 of 67

  • couplet drawing
    couplet drawing
  • ● Abdominal tergum 4 with two yellow spots, one central and one in basal half, sometimes fused
  • b ↑
  • Libellulidae: Key couplet 12 of 67

  • couplet drawing
    couplet drawing
  • ○ Top of vertex yellow
    ● Abdominal terga 6 and 7 with basal and central yellow spots, sometimes fused or partly so
  • b ↑
  • Libellulidae: Key couplet 13 of 67

  • couplet drawing
  • ● Genae completely black

    ⇒ species: Common Archtail (Nannophlebia risi)
  • a ↑
1  
  • Libellulidae: Key couplet 1 of 67

  • couplet drawing
  • ● Distal antenodal of forewing complete, both costal and subcostal sections present
a ↑
b ↓
  • couplet drawing
  • ● Distal antenodal of forewing incomplete, only the costal section present

2  
  • Libellulidae: Key couplet 2 of 67

  • couplet drawing
  • ● Hindwing lacking anal loop

    ⇒ genus: Nannophya
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Anal loop present

3  
  • Libellulidae: Key couplet 9 of 67

  • couplet drawing
  • ● Anal loop rounded, poorly developed, of three to five cells
a ↑
b ↓
  • couplet drawing
  • ● Anal loop well developed, generally stocking-shaped, usually closed at tip

4  
  • Libellulidae: Key couplet 10 of 67

  • couplet drawing
  • ● Basal side of hindwing triangle well beyond arculus

    ⇒ species: Rainforest Elf (Tetrathemis irregularis cladophila)
a ↑
b ↓
  • couplet drawing
  • ● Basal side of hindwing triangle close to or at arculus

    ⇒ genus: Nannophlebia

5  
  • Libellulidae: Key couplet 11 of 67

  • couplet drawing
  • ● Abdominal tergum 4 with small, central yellow spot

    ⇒ species: Elusive Archtail (Nannophlebia eludens)
a ↑
b ↓
  • couplet drawing
    couplet drawing
  • ● Abdominal tergum 4 with two yellow spots, one central and one in basal half, sometimes fused

6  
  • Libellulidae: Key couplet 12 of 67

  • couplet drawing
  • ○ Top of vertex black
    ● Abdominal tergum 6 and, usually, 7 with single, central yellow spot

    ⇒ species: Top End Archtail (Nannophlebia mudginberri)
a ↑
b ↓
  • couplet drawing
    couplet drawing
  • ○ Top of vertex yellow
    ● Abdominal terga 6 and 7 with basal and central yellow spots, sometimes fused or partly so

7  
  • Libellulidae: Key couplet 13 of 67

  • couplet drawing
  • ● Genae completely black

    ⇒ species: Common Archtail (Nannophlebia risi)
a ↑
b ↓
  • couplet drawing
  • ● Genae black with bright white spot

    ⇒ species: Pilbara Archtail (Nannophlebia injibandi)

Australian distribution