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| Infraorder Brachyura // Family Pirimelidae | ||||
| Genus Sirpus Gordon, 1953 | ||||
| Genus contain 4 species WoRMS, 2017): | ||||
| Sirpus gordonae Manning & Holthuis, 1981 Sirpus monodi Gordon, 1953 Sirpus ponticus Verestchaka, 1989 Sirpus zariquieyi Gordon, 1953 |
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| Differences between species of genus Sirpus (Верещака, 1989) | ||||
| Signs \ Species | Sirpus ponticus | Sirpus zariquieyi | Sirpus monodi |
| 3 dental rows on dorsal surface of carapace | + | - | - |
| Form of carapace in males and females | the same | different | the same |
| Abdominal segment of female with granular comb on dorsal surface | I and II | I | I |
| Bristles on distal end of antenna II | Pinnate | Pinnate | Simple |
| Pereopod I of male | Not equal | Equal | Equal |
| Spike on distal end of carpus of first pereopod | Long and sharp | Short | Short |
| Dactylus of first pereopod | Longer then dorsal border of palm | Shorter then dorsal border of palm | Shorter then dorsal border of palm |
| Tubercles on merus of fifth pereopod | + | - | - |
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