Species;"A2 peduncle";"G1 dactylus";"G1 carpus";"G2 palm margin";"G2 posterior notch";"Pereopod 6 coxa";"Pereopod 7 carpus";"Uropod 1 inner ramus";"Uropod 2";"Uropod 3";Telson
"Platorchestia ano Lowry & Bopiah, 2013";"5th longer than 4th";"Subequal in length to palm, cuspidactylate";"2× longer than propodus";rounded;–;"Not protruded";slender;"3 robust setae";"P 7–8";"P 3";"7 per lobe"
"In 4";"M 2"
"Out 2";"A 4–5"
"Platorchestia crassicornis (Costa, 1867)";–;"Longer than palm, -";"1.5× longer than propodus";"2 strong processes";–;–;"Not strong";–;–;–;"8 per lobe"
"Platorchestia exter Myers & Lowry, 2023";"5th longer than 4th";"Shorter than palm, cuspidactylate";"Less than 3× of width";"Slightly mid notch";;"Distinctly protruded";"very enlarged";"7 robust setae";"P 7–8";"P 1";"3–5 per lobe"
"In 2";"M 3"
"Out 1";A3–4
"Platorchestia griffithsi Myers & Lowry, 2023";"5th longer than 4th";"Much shorter than palm";"Over 1.5× of propodus";"with subdistal notch";–;"Not protruded";"Incrassate, subovoid";"6 robust setae";"P 7–10";"P 3";"3–5 per lobe"
"In 1 row";"M 1"
"Out 1";"A 3"
"Platorchestia munmui Jo, 1988";"5th 1.4× as long as 4th";"Shorter than palm";–;"Notch near posterior";acute;"Not protruded";incrassate;+;–;–;"8 per lobe"
"Platorchestia negevensis Myers & Lowry, 2023";"5th longer than 4th";"Shorter than palm, cuspidactylate";–;"Nearly straight";–;"Not protruded";slender;"8 robust setae";"P 8–9";"P 3";"5–7 per lobe"
"In 6";"M 2"
"Out 2";"A 3"
"Platorchestia oliveirae Myers & Lowry, 2023";"5th longer than 4th";"Overlapping palm";–;"strong mid palmar notch";–;"Not protruded";"Weakly expanded";"7 robust setae";"P 7–10";"P 1";"5–6 per lobe"
"In 2";"M 2–3"
"Out -";"A 3–4"
"Platorchestia pachypus (Derzhavin, 1937)";–;"Shorter than palm, cuspidactylate";–;rounded;–;"Not protruded";"Distinctly incrassate";"1 subapical 2 apical";–;–;+
"Platorchestia pacifica Miyamoto & Morino, 2004";"5th 1.4× as long as 4th";"Shorter than palm, cuspidactylate";"0.6× as long as propodus";"with subdistal notch";acute;"Distinctly protruded";"weakly incrassate";"7 robust setae";"P 6";"P 4";"5 per lobe"
"In 4";"M 3"
"Out 1";"A 3"
"Platorchestia paraplatensis Serejo & Lowry, 2008";–;"Shorter than palm, cuspidactylate";–;"Well-developed mid-palmar notch";obtuse;"Distinctly protruded";incrassate;"7 robust setae";"P 7–10";"P 2–3";"3–5 per lobe"
"In 5";"M 2"
"Out 3";"A 4–5"
"Platorchestia platensis (Krøyer, 1845)";"5th 1.4× as long as 4th";"Weakly overlapping palm";–;"with subdistal notch";acute;"Distinctly protruded";"incrassate subovate";"7 robust setae";"P 8";"P 2–3";"3–5 per lobe"
"In 2";"M 0–2"
"Out 2";"A 3–4"
"Platorchestia smithi Lowry, 2012";"5 subequal than article 4";"subequal in length to palm";–;"Weakly notch";smooth;"Distinctly protruded";slender;"11 robust setae";"P 4";"P 3";"3–6 per lobe"
"In 1";"M 2"
"Out 1";"A 5"
"Platorchestia aquaticus sp. nov.";"5th 1.7× as long as 4th";"Shorter than palm, cuspidactylate";"1.3× longer than propodus";rounded;smooth;"Not protruded";slender;"4 robust setae";"P 6";"P 3";"6 per lobe"
"In 4";"M 1"
"Out 1–2";"A 4"