| Order AMPHIPODA Latreille, 1816 |
| Suborder GAMMARIDEA Latreille, 1802 |
| Family EUSIRIDAE Stebbing, 1888 |
| Genus Rhachotropis S.I. Smith, 1883 |
| Rhachotropis S.I. Smith, 1883: 222. |
| Gracilipes Holmes, 1908: 526. |
| Type species Oniscus aculeata Lepechin, 1780 |
| Rhachotropis saskia n. sp. |
| Lörz & Jażdżewska |
| (Figs. 2–8) |