Carnavon Tigertail (Eusynthemis deniseae)

The Carnavon Tigertail (Eusynthemis deniseae) is a dragonfly species of the family Synthemistidae, which contains 26 species in Australia.

The identification key to the family Synthemistidae consists of 26 couplets, 13 of which are pertinent to Eusynthemis deniseae. 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.

#	Family	Species	Couplet No.
	Synthemistidae	Carnavon Tigertail (Eusynthemis deniseae)	Synthemistidae: Key couplet 1 of 26 ○ 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 pale, with more or less extensive dark brown or black markings a ↑ Synthemistidae: Key couplet 14 of 26 ○ Labrum black b ↑ Synthemistidae: Key couplet 15 of 26 ● Labrum without dark stripe in midline ⇒ species: Carnavon Tigertail (Eusynthemis deniseae) (part) 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 ● Postclypeus with large, yellowish patch on each side ⇒ species: Carnavon Tigertail (Eusynthemis deniseae) (part) a ↑
1			Synthemistidae: Key couplet 1 of 26 ○ Wings with dark brown spots at nodus ⇒ species: Tasmanian Spotwing (Synthemiopsis gomphomacromioides) a ↑ b ↓ ○ Dark markings, if present, confined to basal parts of wings
2			Synthemistidae: Key couplet 2 of 26 ● Generally one crossvein in median space, sometimes two in one or two wings a ↑ b ↓ ● Generally two to five crossveins in median space of all wings
3			Synthemistidae: Key couplet 9 of 26 ● No accessory thick antenodal in forewing, only the two primaries present ● Male tergum 10 with posteriorly directed pale mid-dorsal cone ● Ovipositor reaching beyond segment 9 ⇒ genus: Synthemis a ↑ b ↓ ● 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
4			Synthemistidae: Key couplet 11 of 26 ● Anterior frons metallic black ⇒ species: Royal Tigertail (Parasynthemis regina) a ↑ b ↓ ● Anterior frons pale, or pale with black stripe, often quite broad, in midline
5			Synthemistidae: Key couplet 12 of 26 ○ Frons narrow ○ Membranule of both wings vestigial ● Female ovipositor well developed ⇒ genus: Choristhemis a ↑ b ↓ ○ Frons broad ○ Membranule of both wings well developed ● Female ovipositor reduced to vulvar lamina or poorly developed ⇒ genus: Eusynthemis
6		(part)	Synthemistidae: Key couplet 14 of 26 ○ Labrum pale, with more or less extensive dark brown or black markings a ↑ b ↓ ○ Labrum black
7		(part)	Synthemistidae: Key couplet 14 of 26 ○ Labrum pale, with more or less extensive dark brown or black markings a ↑ b ↓ ○ Labrum black
8			Synthemistidae: Key couplet 15 of 26 ● Labrum with dark stripe in midline ⇒ species: Golden Tigertail (Eusynthemis virgula) a ↑ b ↓ ● Labrum without dark stripe in midline ⇒ species: Carnavon Tigertail (Eusynthemis deniseae) (part)
9			Synthemistidae: Key couplet 16 of 26 ● Intermediary piece at base of each wing white or pale yellow a ↑ b ↓ ● Intermediary piece brown or black
10			Synthemistidae: Key couplet 17 of 26 ● A large subtriangular yellow patch each side in basal half of front of synthorax ⇒ species: Pretty Tigertail (Eusynthemis netta) a ↑ b ↓ ● Front of synthorax dark except for pale dorsal carina
11			Synthemistidae: Key couplet 18 of 26 ● Metascutum yellow a ↑ b ↓ ● Metascutum dark brown to black
12			Synthemistidae: Key couplet 20 of 26 ● Top of frons black, anterior and lateral margins pale ⇒ species: Black Tigertail (Eusynthemis nigra) a ↑ b ↓ ● Top of frons black at base, continued into black midline between pair of conspicuous yellowish white anterior patches
13			Synthemistidae: Key couplet 21 of 26 ● Postclypeus with large, yellowish patch on each side ⇒ species: Carnavon Tigertail (Eusynthemis deniseae) (part) a ↑ b ↓ ● Lateral part of postclypeus black ⇒ species: Small Tigertail (Eusynthemis brevistyla)