DragonflyPix

Forest Mosquitohawk (Micromidia atrifrons)

The Forest Mosquitohawk (Micromidia atrifrons) is a dragonfly species of the family Austrocorduliidae, which contains 11 species in Australia.

The identification key to the family Austrocorduliidae consists of 10 couplets, 7 of which are pertinent to Micromidia atrifrons. 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.
 AustrocorduliidaeForest Mosquitohawk
(Micromidia atrifrons)
  • Austrocorduliidae: Key couplet 1 of 10

  • couplet drawingcouplet drawing
  • ● Two, occasionally more, cu-a in hindwing, or, costal side of hindwing triangle approximately twice as long as proximal side and discoidal field of hindwing beginning with one row of cells
  • b ↑
  • Austrocorduliidae: Key couplet 2 of 10

  • couplet drawing
  • ● Two, occasionally more, cu-a in hindwing
  • b ↑
  • Austrocorduliidae: Key couplet 5 of 10

  • couplet drawing
  • ● 1A of forewing bowed forwards between end of cell behind subtriangle and wing margin
    ● Anal loop beginning with row of two cells
  • b ↑
  • Austrocorduliidae: Key couplet 6 of 10

  • couplet drawing
  • ● Triangles of forewing and hindwing free
  • b ↑
  • Austrocorduliidae: Key couplet 7 of 10

  • couplet drawing
    couplet drawingcouplet drawing
  • ● First and third antenodals thickened in forewing
    ● Abdomen black with yellow markings on at least the first two terga

    ⇒ genus: Micromidia
  • b ↑
  • Austrocorduliidae: Key couplet 9 of 10

  • ○ Larger species, hindwing longer than 26 mm
  • b ↑
  • Austrocorduliidae: Key couplet 10 of 10

  • couplet drawing
  • ● Length:width of pterostigma < 2.5:1, distal end squarer, less strongly aslant than next postnodal crossvein

    ⇒ species: Forest Mosquitohawk (Micromidia atrifrons)
  • b ↑
1  
  • Austrocorduliidae: Key couplet 1 of 10

  • couplet drawingcouplet drawing
  • ● Only one cu-a in hindwing
    ● Costal side of hindwing triangle up to 1.7 times the length of proximal side and discoidal side of hindwing beginning with two rows of cells

    ⇒ species: Orange Streamcruiser (Hesperocordulia berthoudi)
a ↑
b ↓
  • couplet drawingcouplet drawing
  • ● Two, occasionally more, cu-a in hindwing, or, costal side of hindwing triangle approximately twice as long as proximal side and discoidal field of hindwing beginning with one row of cells

2  
  • Austrocorduliidae: Key couplet 2 of 10

  • couplet drawing
  • ● One cu-a in hindwing

    ⇒ genus: Austrocordulia
a ↑
b ↓
  • couplet drawing
  • ● Two, occasionally more, cu-a in hindwing

3  
  • Austrocorduliidae: Key couplet 5 of 10

  • couplet drawing
  • ● 1A of forewing almost straight between end of cell behind subtriangle and wing margin
    ● Anal loop beginning with single cell

    ⇒ species: Rainforest Mystic (Austrophya mystica)
a ↑
b ↓
  • couplet drawing
  • ● 1A of forewing bowed forwards between end of cell behind subtriangle and wing margin
    ● Anal loop beginning with row of two cells

4  
  • Austrocorduliidae: Key couplet 6 of 10

  • couplet drawing
  • ● Triangles of forewing and hindwing crossed

    ⇒ species: Nighthawk (Apocordulia macrops)
a ↑
b ↓
  • couplet drawing
  • ● Triangles of forewing and hindwing free

5  
  • Austrocorduliidae: Key couplet 7 of 10

  • couplet drawing
  • ● First 3-4 antenodals thickened in forewing
    ○ Abdomen bronze or black, without yellow markings

    ⇒ genus: Lathrocordulia
a ↑
b ↓
  • couplet drawing
    couplet drawingcouplet drawing
  • ● First and third antenodals thickened in forewing
    ● Abdomen black with yellow markings on at least the first two terga

    ⇒ genus: Micromidia

6  
  • Austrocorduliidae: Key couplet 9 of 10

  • ○ Small species, hindwing shorter than 24 mm

    ⇒ species: Thursday Island Mosquitohawk (Micromidia rodericki)
a ↑
b ↓
  • ○ Larger species, hindwing longer than 26 mm

7  
  • Austrocorduliidae: Key couplet 10 of 10

  • couplet drawing
  • ● Length:width of pterostigma c. 3:1, distal end strongly aslant, almost parallel to next postnodal crossvein

    ⇒ species: Early Mosquitohawk (Micromidia convergens)
a ↑
b ↓
  • couplet drawing
  • ● Length:width of pterostigma < 2.5:1, distal end squarer, less strongly aslant than next postnodal crossvein

    ⇒ species: Forest Mosquitohawk (Micromidia atrifrons)

Australian distribution