Eosymtinae, Bousfield & Hendrycks, 1994

Labay, Vjacheslav S., 2022, Review of amphipods of the family Pleustidae Buchholz, 1874 (Amphipoda) from the coastal waters of Sakhalin Island (Far East of Russia). II. Subfamily Eosymtinae Bousfield & Hendrycks, 1994, Zootaxa 5125 (5), pp. 547-562 : 548

Key to genera of Eosymtinae (from Labay 2018)

1. Coxae 1–3, posterodistal cusps multiple (2–5 in number); peduncular segment 1 of antenna 1 with strong anterodistal processes; dactylus of pereopods 3–7 at most 0.25 propodus ( Figs. 1 , 2 )............................ Cognateosymtes Labay, 2018

- Coxae 1–3, posterodistal cusp single; peduncular segment 1 of antenna 1 without strong anterodistal processes; dactylus of pereopods 3–7 at leastst 0.45 propodus ( Figs. 1 , 2 )........................... Eosymtes Bousfield & Hendrycks, 1994

Figures

FIGURE 1. Eosymtinae Bousfield & Hendrycks, 1994, lateral view: a—Eosymtes minutus Bousfield and Hendrycks, 1994 (from Bousfield and Hendrycks 1994: fig. 7), b—Eosymtes magnumoculis sp. nov., c—Cognateosymtes serraticoxae Labay, 2018 (from Labay 2018: fig. 2a)

FIGURE 2. Eosymtinae Bousfield & Hendrycks, 1994: a–c—peduncle of antenna 1; d–f—maxilla 2; g–i—palp of maxilliped; j–l—coxal plates 1–3 posteroventrally; m, n, o—propodus and dactylus of pereopods 3–7; a, d, g, j, m—Eosymtes minutus Bousfield and Hendrycks, 1994 (from Bousfield and Hendrycks 1994), b, e, h, k, n—Eosymtes magnumoculis sp. nov., c, f, i, l, o—Cognateosymtes serraticoxae Labay, 2018 (from Labay 2018)