● Distal antenodal of forewing incomplete, only the costal section present
b ↑
Libellulidae: Key couplet 35 of 67
● Hindwing triangle free
b ↑
Libellulidae: Key couplet 39 of 67
○ Not as above
b ↑
Libellulidae: Key couplet 40 of 67
● Base of hindwing triangle at or slightly proximal to arculus
b ↑
Libellulidae: Key couplet 41 of 67
● Tip of anal loop closed, the bounding veins meeting midvein one row of cells away from wing margin
b ↑
Libellulidae: Key couplet 45 of 67
● Subtriangle of forewing with one to three cells, its basal side well-defined
a ↑
Libellulidae: Key couplet 46 of 67
○ Smaller dragonflies, hindwing shorter than 38 mm
b ↑
Libellulidae: Key couplet 47 of 67
● Discoidal field of forewing, between triangle and level of origin of IR3, starting with two or three rows of cells, followed by two rows
b ↑
Libellulidae: Key couplet 49 of 67
○ Hindwing shorter than 30 mm
b ↑
Libellulidae: Key couplet 51 of 67
● Hind margin of eye uniformly curved
⇒ genus: Diplacodes
b ↑
Libellulidae: Key couplet 52 of 67
● Subtriangle of forewing subdivided into two or three cells ○ Wings hyaline, or yellow to yellowish brown at base or tips
b ↑
Libellulidae: Key couplet 53 of 67
○ Abdomen yellowish-brown to bright red, with or without black markings
b ↑
Libellulidae: Key couplet 54 of 67
● A small dark brown to black spot on intersegmental suture just above level of metastigma
b ↑
Libellulidae: Key couplet 55 of 67
● Male abdomen with prominent black lateral markings on terga 4-7 ● Female abdominal segments 4-7 with well-defined, black mid-dorsal line expanded into spot at end of each segment ○ Wings hyaline except for brownish-yellow spot at base