Supplement Table S2: Observed morphological characteristics of studied Australian Triops main and sub-lineage. A)males, B) ovisacs-bearing individuals (obi; females and hermaphrodites). For details on telsonic characters refer to Fig. 2. The position of the dorsal organ was scored relative to the interocular zone: 0, reaches into interocular zone; 1, tangent to interocular zone; 2, does not reach interocular zone. The number of spines on the carina was scored as: 0, without spines; 1, spines over the complete carina; 2, between one and ten spines. For the terminal curved spines at the sulcus the absence (0) or presence (1) was scored and the shape of the sulcus was scored as semicircular (0) or triangular (1).

CL, carapace length; TW, telson width; ?, unknown due to damage; -, not studied (usually only juveniles or individuals unsuitable for morphological investigation available); *, followingMurugan et al. 2009 and Rogers 2001;**,following Zierold 2006; ***, following Wolf 1911; ****, following Murugan et al. 2009; *****following Lynch 1972

A) / n / ratio CL/TW / position of dorsal organ* / number of spines on carina ** / terminal curved spine at sulcus***** / number of spines at sulcus / shape of sulcus*** / number of body rings**** / number of legless abdominal body rings**** / spines on telson
medial / setal / lateral / total
A / 8 / 0.14 - 0.20 / 0 / 0 ; 2 / 1 / 34 - 58 / 0 , 1 / 24 - 28 / 9 - 11 / 5 - 31 / 6 - 11 / 5 - 69 / 19 - 101
A1 / 7 / 0.14 - 0.20 / 0 / 0 ; 2 / 1 / 34 - 58 / 0; 1 / 24 - 28 / 8 - 11 / 5- 31 / 6 - 11 / 5 - 69 / 19 - 101
A2 / 1 / 0.17 / 0 / 2 / 1 / 49 / 1 / 26 / 11 / 7 / 8 / 31 / 46
C / 3 / 0.14 / 0 ; 2 / 0 / 0 ; 1 / 53 - 56 / 0 / 25 - 27 / 10 / 4 - 8 / 6 - 8 / 5 - 7 / 15 - 23
C1 / 2 / 0.14 / 2 / 0 / 0 ; 1 / 53 - 56 / 0 / 25 - 26 / 10 / 4 - 5 / 6 - 8 / 5 - 6 / 15 - 19
C2 / 1 / 0.14 / 0 / 0 / 1 / ? / 0 / 27 / 10 / 8 / 8 / 7 / 23
D / 2 / 0.16 / 1 / 1 / 0 / 56 - 65 / 0 ; 1 / 30 - 31 / 12 / 18 - 30 / 5 - 8 / 38 - 52 / 61 - 90
E / 2 / 0.16 - 0.17 / 1 / 0 / 0 ; 1 / 56 - 76 / 0 / 26 / 10 - 11 / 10 - 13 / 7 - 8 / 5 - 6 / 22 - 27
F / 3 / 0.14 - 0.15 / 1 ; 2 / 0 ; 1 / 0 / 66 / 0 / 23 - 24 / 9 - 10 / 3 - 4 / 6 - 8 / 6 - 10 / 15 - 22
F2 / 3 / 0.14 - 0.15 / 1 ; 2 / 0 ; 1 / 0 / 66 / 0 / 23 - 24 / 9 - 10 / 3 - 4 / 6 - 8 / 6 - 10 / 15 - 22
G / 5 / 0.17 - 0.33 / 1 / 0 ; 1 / 0 / 48 - 74 / 0 / 30 - 32 / 9 - 12 / 13 - 30 / 5 - 11 / 6 - 9 / 27 - 44
H / 4 / 0.14 - 0.16 / 0 ; 1 ; 2 / 0 / 0 / 74 - 96 / 0 ; 1 / 22 - 28 / 6 - 8 / 7 - 10 / 5 - 8 / 5 - 12 / 18 - 27
J / 4 / 0.15 - 0.21 / 1 ; 2 / 1 / 0 / 58 - 80 / 0 / 31 - 33 / 10 - 12 / 14 - 19 / 8 / 6 - 8 / 29 - 35
L / 2 / 0.15 - 0.18 / 1 / 1 / 0 / 41 / 0 ; 1 / 29 / 11 - 12 / 11 - 23 / 5 - 10 / 7 - 42 / 23 - 75
M / 1 / 0.17 / 0 / 0 / 1 / 46 / 0 / 30 / 14 / 18 / 11 / ? / ?
N / 1 / 0.14 / 0 / 0 / 0 / ? / 0 / 27 / 8 / 6 / 4 / 5 / 15
B) / n / ratio CL/TW / position of dorsal organ* / number of spines on carina** / terminal curved spine at sulcus***** / number of spines at sulcus / shape of sulcus*** / number of body rings**** / number of legless abdominal body rings**** / spines on telson
medial / setal / lateral / total
A / 5 / 0.13 - 0.16 / 0 ; 2 / 0 ; 1 / 1 / 41 - 56 / 0 ; 1 / 24 - 26 / 8 / 5 - 9 / 4 - 10 / 5 - 28 / 16 - 47
A1 / 4 / 0.14 - 0.16 / 0 ; 2 / 0 ; 1 / 1 / 41 - 56 / 0 ; 1 / 24 - 26 / 8 / 5 - 9 / 4 - 10 / 5 - 28 / 17 - 47
A2 / 1 / 0.13 / 0 / 0 / 1 / 41 / 0 / 26 / 8 / 5 / 6 / 5 / 16
B / 5 / 0.13 - 0.15 / 0 ; 1 ; 2 / 0 ; 2 / 0 ; 1 / 29 - 32 / 0 ; 1 / 23 - 27 / 8 / 5 - 6 / 5 - 7 / 4 - 21 / 14 - 32
B1 / - / - / - / - / - / - / - / - / - / - / - / - / -
B2 / 5 / 0.13 - 0.15 / 0 ; 1 ; 2 / 0 ; 2 / 0 ; 1 / 29 - 32 / 0 ; 1 / 23 - 27 / 8 / 5 - 6 / 5 - 7 / 4 - 21 / 14 - 32
B3 / - / - / - / - / - / - / - / - / - / - / - / - / -
C / 3 / 0.13 - 0.16 / 0 ; 2 / 0 / 0 ; 1 / 63 - 66 / 0 / 24 - 27 / 9 - 10 / 5 - 9 / 7 - 8 / 4 - 7 / 16 - 23
C1 / 1 / 0.13 / 0 / 0 / 0 / 63 / 0 / 24 / 9 / 5 / 7 / 4 / 16
C2 / 2 / 0.14 - 0.16 / 0 ; 2 / 0 / 0 ; 1 / 63 - 66 / 0 / 25 - 27 / 9 - 10 / 8 - 9 / 8 / 6 - 7 / 23
D / 20 / 0.10 - 0.19 / 1 / 1 / 0 ; 1 / 36 - 65 / 0 ; 1 / 24 - 32 / 10 - 13 / 8 - 29 / 4 - 9 / 6 - 60 / 21 - 93
E / 4 / 0.14 - 0.17 / 0 ; 1 / 0 / 0 ; 1 / 65 - 75 / 0 / 25 - 28 / 8 - 11 / 5 - 12 / 5 - 12 / 4 - 32 / 18 - 53
F / 2 / 0.14 - 0.16 / 1 ; 2 / 0 / 0 / 56 - 68 / 0 / 23 - 25 / 8 - 9 / 3 - 4 / 7 / 5 - 7 / 16- 17
F1 / - / - / - / - / - / - / - / - / - / - / - / - / -
F2 / 2 / 0.14 - 0.16 / 1 ; 2 / 0 / 0 / 56 - 68 / 0 / 23 - 25 / 8 - 9 / 3 - 4 / 7 / 5 - 7 / 16 - 17
G / 2 / 0.25 - 0.30 / 1 / 1 / 0 / 60 - 61 / 0 / 30 - 31 / 7 - 10 / 15 - 16 / 6 / 8 / 29 - 30
H / 3 / 0.15 / 1 ; 2 / 0 / 0 / 82 - 94 / 1 / 21 - 26 / 7 / 7 - 9 / 6 - 7 / 5 - 13 / 19 - 26
I / 5 / 0.12 - 0.15 / 0 / 0 ; 2 / 0 ; 1 / 44 - 57 / 0 ; 1 / 25 - 29 / 8 / 5 - 8 / 4 - 10 / 4 - 34 / 17 - 48
J / 1 / 0.14 / 1 / 1 / 0 / 65 / 0 / 32 / 10 / 16 / 8 / 6 / 30
K / 5 / 0.12 - 0.14 / 0 / 0 / 0 ; 1 / 35 - 42 / 1 / 23 / 9 / 5 - 7 / 4 - 8 / 5 - 6 / 15 - 21
L / 3 / 0.14 - 0.18 / 1 / 1 / 0 / 29 - 36 / 1 / 27 - 28 / 10 - 11 / 14 - 16 / 6 - 8 / 6 - 7 / 28 - 30
M / - / - / - / - / - / - / - / - / - / - / - / - / -
N / 4 / 0.12 - 0.18 / 0 / 2 / 0 / 59 - 68 / 0 ; 1 / 26 - 28 / 6 - 7 / 4 - 9 / 4 - 6 / 5 - 27 / 16 - 41
O / 9 / 0.12 - 0.19 / 0 ; ? / 0 ; 2 / 0 ; 1 / 37 - 63 / 0 ; 1 / 27 - 31 / 6 - 9 / 4 - 9 / 3 - 8 / 3 - 18 / 14 - 34
P / - / - / - / - / - / - / - / - / - / - / - / - / -