○ Dark markings, if present, confined to basal parts of wings
b ↑
Synthemistidae: Key couplet 2 of 26
● Generally two to five crossveins in median space of all wings
b ↑
Synthemistidae: Key couplet 9 of 26
● An accessory thick antenodal in forewing in addition to the two primaries; this and the two previous alternating with thin antenodals ○ Male tergum 10 without pale dorsal cone ○ Ovipositor, if developed, not reaching beyond segment 9
b ↑
Synthemistidae: Key couplet 11 of 26
● Anterior frons pale, or pale with black stripe, often quite broad, in midline
b ↑
Synthemistidae: Key couplet 12 of 26
○ Frons broad ○ Membranule of both wings well developed ● Female ovipositor reduced to vulvar lamina or poorly developed
⇒ genus: Eusynthemis
b ↑
Synthemistidae: Key couplet 14 of 26
○ Labrum black
b ↑
Synthemistidae: Key couplet 16 of 26
● Intermediary piece at base of each wing white or pale yellow
a ↑
Synthemistidae: Key couplet 17 of 26
● Front of synthorax dark except for pale dorsal carina
b ↑
Synthemistidae: Key couplet 18 of 26
● Metascutum dark brown to black
b ↑
Synthemistidae: Key couplet 20 of 26
● Top of frons black at base, continued into black midline between pair of conspicuous yellowish white anterior patches
b ↑
Synthemistidae: Key couplet 21 of 26
● Lateral part of postclypeus black
⇒ species: Small Tigertail (Eusynthemis brevistyla)