Genus Ethmolaimus
de Man, 1880
Definition: Cyatholaiminae. Cuticle with transverse striae
carrying small punctations of uniform size throughout. Amphids spiral;
at about level of stoma base but variable in position. Head not offset,
rounded anteriorly, with 6 indistinct lips each with a small papilla, 4
setae on head. Stoma in 3 parts, the first short and widish with
12 longitudinal ribs, the second slightly narrower but no longer, the third
long and narrower and consisting of 3 longitudinal ribs each ending anteriorly
in a tooth. The second and third sections are enclosed in a stomatal
capsule which is clearly separated from the oesophagus. Oesophagus
anteriorly cylindrical and ending posteriorly in a pear-shaped, valvate
bulb. Oesophago-intestinal cells present. Nerve ring is just
beyond 1/2 oesophageal length. Excretory pore just behind the nerve
ring and leading to a cell lying ventral to the beginning of the intestine.
Tail in both sexes tapering, terminal duct and caudal glands present.
Vulva median; gonads paired, opposed and reflexed. Testes and spicules
paired. Gubernaculum composed of 2 lateral pieces joined beneath
the spicules by a U-shaped piece. Male with 9-24 supplements.
Both sexes have various scattered bristles over the whole body.
Type species: Ethmolaimus pratensis de Man, 1880
Syn.: E. tatricus Daday,
1896
Chromadora revaliensis, G. Schneider, 1906
E. revaliensis, (G. Schneider, 1906) Steiner, 1913
E. lemani Hofmänner, 1913
C. foreli Hofmänner, 1913
E. foreli (Hofmänner, 1913) Hofmänner, 1915
Triodontolaimus alpinus Micoletzky, 1913
C. (Parachromadora) alpina (Micol., 1913) Micol.,
1914
E. americanus Cobb, 1914
E. arcticus Steiner, 1916
E. gracilicaudatus N.A. Cobb in M.V. Cobb, 1915
E.Maduei Micoletzky, 1922
