Genus Triodontophorus (Looss,
1900)
Looss, 1902
Key to species
| 1 | a. Mouth collar appears in optical section as inflated round tube in ring around mouth; female tail long, vulva separated from anus by 1.5—3 mm; spicules more than 3 mm long | T. serratus |
| b. Mouth collar somewhat flattened with acute edge around outside perimeter; female tail short, vulva separated from anus by less than 1 mm; spicules less than 2 mm long | 2 | |
| 2 | a. Cuticle strongly serrated in cervical region; dorsal lobe of bursa short; teeth finely denticulated | T. tenuicollis |
| b. Cuticle striated but relatively smooth; dorsal lobe of bursa long; teeth smooth or strongly denticulated | 3 | |
| 3 | a. Submedian papillae short, broad, and conical; teeth usually smooth except for 3 elevations on each; dorsal lobe of bursa very long (625-800); female tail very short, vulva very close to anus | T. brevicauda |
| b. Submedian papillae long, narrow, and pointed; dorsal lobe of bursa less than 600 long; female tail short, vulva separated from anus by more than twice tail length | 4 | |
| 4 | a. Leaf-crowns consist of 44—50 elements; usually many small to medium irregular denticulations on each tooth | T. minor |
| b. Leaf-crowns consist more than 55 elements; denticulations on teeth large, fine and regular or absent | 5 | |
| 5 | a. Serrations on upper edge of teeth completely absent | T. burchelli |
| b. Serrations on upper edge of teeth present in different forms | 6 | |
| 6 | a. Usually 3 large denticulations on each lateral part of each tooth | T. nipponicus |
| b. Medium serration of teeth | T. hartmannae |
© (contents) R.J.
Lichtenfels, V.A. Kharchenko,
G.M. Dvojnos 2003
Design and programming: Yuriy Kuzmin,
2003