Setopus primus

Length ( bottle ):
120 µm - 186 µm

Width:
34 µm - 42 µm

Width of the head ( five-lobed ):
39 µm - 52 µm

Width of the neck:
24 µm - 26 µm

Length of the furca:


Adhessive tubes (none):


Pharyx ( cylindrical ):
40 µm - 47 µm

Diameter of the mouth ( around ):
unknown

Dorsal scales:
No scales; dorsolaterally 3 pairs of single, slightly curved spines (46µm); two simple terminal spines (40-54 µm).

Ventral scales:
no scales; 4 eyelash tufts in two rows

Oecology:
weedy bog ponds; rare