| Diagnosis and discussion | 
| # Key to species | 
| T. serratus | 
| T. brevicauda | 
| T. minor | 
| T. nipponicus | 
| T. tenuicollis | 
| T. burchelli | 
| T. hartmannae | 
| Diagnosis and discussion | 
| # Key to species | 
| C. tetracanthum | 
| C. catinatum | 
| C. pateratum | 
| C. alveatum | 
| C. montgomeryi | 
| Diagnosis and discussion | 
| # Key to species | 
| C. coronatus | 
| C. labiatus | 
| C. labratus | 
| C. sagittatus | 
| C. ulambajari | 
| Diagnosis and discussion | |
| # Key to species | C. calicatus | 
| C. minutus | C. hybridus | 
| C. longibursatus | C. goldi | 
| C. asymetricus | C. bidentatus | 
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C. longicauda Leiper, 1911Synonyms: C. asini Roetti, 1947 General: Buccal cavity cavity oval. Male: Body length 4.7-7.8 mm. Esophagus length 397-450. BC width 54-90, depth 180- 230. Distance from anterior deirids to head end 347-481, from excretory pore – 336-504, from nerve ring 308-352. Spicules length 710-890. Gubernaculum length 162-196. Dorsal ray length 196-336. Dermal collar well developed on ventral side of genital cone. Appendages of genital cone as in type species. Protrusions of dermal collar absent. Female: Body length 6.2-8.5 mm, length of esophagus 420-500, width of BC 54-100, depth 160-246. Distance from anterior deirids to head end 431-520, from excretory pore – 420-515, from nerve ring 347-392. Distance from vulva to tail tip 1.10-1.58 mm, from anus to tail tip 263-336, egg size 84-95x44-56 Hosts: E. asinus, E. caballus X E. asinus, E. burchelli, E. zebra hartmannae. Locality: cecum, colon.  Distribution: Africa.  | 
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 © (contents) R.J. 
Lichtenfels, V.A. Kharchenko, 
G.M. Dvojnos 2003  | 
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