Table 1 Main measurements of females of T. americana sp. n

Maturity

Gravid

Virgin

L, μm

4,470

3,250

Amph.dist., μm

73

47

Tail length, μm

90

103

Diameter at level of cephalic sensilla, μm

34

24

Diameter at amphidial level, μm

79

47

Diameter at level of midbody, μm

105

80

Maximal body diameter, μm

105

80

Diameter at anal level, μm

48

48

a

42.6

40.6

c

55.0

50.5

c′

1.4

2.6

d

61

69

V, %

50.5

55.0