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Table 1 Relevant taxonomic characters of the North Atlantic and Mediterranean species of the genus Apseudopsis

From: Apseudopsis adami, a new species of tanaidacean (Crustacea: Peracarida) from the NW Iberian Peninsula: postmarsupial development and remarks on morphological characters

  Rostrum Pereonites with apophyses P1 propodus ventral spines P1 merus dorsal spine Antennular flagella (adults) Pereonites with hyposphenia (females)
A. adami sp. nov. Pointed, rounded shoulders 2–6: Posterior corners 4 No Inner: 3
Outer: 10
6
A. acutifrons (Sars 1882) Long, acute 1, 2: Posterior corners. 3–6: Anterior and posterior corners 4 No Inner: 3
Outer: 6–7
2, 3, 5, 6
A. annabensis (Guţu 2002) Pointed, rounded shoulders 1–6: Posterior corners 5 No Inner: 3
Outer: 6–7
6
A. apocryphus (Guţu 2002) Pointed, rounded shoulders No 3 No Inner: 3
Outer: 8–10
3, 6
A. arguinensis (Guţu 2002) Short, acute 2–6: Posterior corners 6 No Inner: 3
Outer: 7–8
2, 6
A. bacescui (Guţu 2002) Pointed, rounded shoulders 1–6: Posterior corners 4 No Inner: 3
Outer: 6–7
2, 3, 6
A. elisae (Bacescu 1961) Pointed, rounded shoulders 1–2: Posterior corners. 3–6: Anterior and posterior corners 5 Yes Inner: 4
Outer: 8
2–6
A. hastifrons (Norman and Stebbing 1886) Pointed, rounded shoulders 1: Posterior corners. 3–6: Anterior and posterior corners 6 No Inner: 3
Outer: 7
2, 3, 5, 6
A. latreillii (Milne-Edwards 1828) Pointed, rounded shoulders No 3 Yes Inner: 4
Outer: 10
2–6
A. mediterraneus (Băcescu 1961) Pointed, rounded shoulders 1–6: Posterior corners 4 No Inner: 3
Outer: 6–8
2, 6
A. minimus (Guţu 2002) Pointed, rounded lobes 1–6: Posterior corners 3 No Inner: 3
Outer: 6
n. d.
A. ostroumovi Bacescu and Carausu 1947 Pointed, rounded shoulders 1–6: Posterior corners 4 No Inner: 3
Outer: 7–8
1–6
A. robustus (Sars 1882) Pointed No 4 Yes Inner: 7–9
Outer: 15–16
1–6
A. tridens (Guţu 2002) Long, with pointed shoulders 1–6: Posterior corners 4 No Inner: 3
Outer: 10
3–6
A. uncidigitatus (Norman and Stebbing 1886) Small, rounded 4, 5: Posterior corners 4 No Inner: 5
Outer: 9
6
  1. nd no data available