| 1 |
Sexual dimorphism |
present (0), absent (1) |
| 2 |
Lip region |
offset (0), not offset (1) |
| 3 |
Stoma |
wide [2–4 times longer] (0), narrow [5–7 times longer] (1) |
| 4 |
Glottoid apparatus |
distinguishable (0), indistinguishable (1) |
| 5 |
Tail length |
long [above 50 μm] (0), moderate [31–50 μm] (1), small [10–30 μm] (2) |
| 6 |
Tail shape |
cupola-shaped (0), hemispheroid (1), conoid (2) |
| 7 |
Spike length |
small [11–30 μm] (0), absent (1), minute [2–10 μm] (2), moderate [31–50 μm] (3), long [above 50 μm] (4) |
| 8 |
Spicule length |
up to 50 μm (0), more than 50 μm (1) |
| 9 |
Spicules distally fused |
more than 20% (0), less than 20% (1) |
| 10 |
Gubernaculum length vs spicule length |
≤ ½ of spicule length (0),> ½ or equal to spicule length (1) |
| 11 |
Bursa |
closed (0), open (1) |
| 12 |
Punctations on bursa |
present (0), absent (1) |
| 13 |
Position of anterior bursal velum |
close to cloaca (0), distant from cloaca (1) |
| 14 |
Bases of genital papillae |
normal (0), swollen (1) |
| 15 |
No. of precloacal GP |
two pairs (0), three pairs (1), absent (2), single pair (3) |
| 16 |
Position of GP1 |
inside the bursa (0), outside the bursa (1) |
| 17 |
Position of GP3 |
close to GP4 (0), distant from GP4 (1) |
| 18 |
GP3 |
slender (0), plump (1) |
| 19 |
GP5 |
plump, long (0), slender, long (1) |
| 20 |
Group of GP6–8 |
basally fused (0), not fused (1) |
| 21 |
Dauer cuticle |
not-sculptured (0), sculptured (1) |
| 22 |
Dauer forms cyst |
no (0), yes (1) |