FIGURE 2. Variation in pleopod morphology of Ione thoracica (Montagu, 1808). A, pleopod 1 of specimen identified by Bonnier (1900) as Ione vicina Bonnier, 1900 from Naples, Italy, note short endopod (arrow); B, pleopod 1 of specimen identified by Bonnier (1900) as I. thoracica from unspecified locality, but most likely Wimereux, France, note long endopod (arrow); C, pleopod 1 of specimen from Volosko, Croatia (NHMW 25807 ex Callianassa truncata Giard & Bonnier, 1890); D, pleopod 1 of specimen from Lido di Staranzano, Italy (NHMW 25231 ex Pestarella tyrrhena (Petagna, 1792)); E, pleopod 1 of specimen from Volosko, Croatia (NHMW 25810 ex C. truncata); F, pleopod 1 of specimen from Hammamet, Tunisia (NHMW 25809 ex C. truncata). A, B from Bourdon 1968; not to scale. Scale bars: C–F = 0.5 mm.

Published as part of Boyko, Christopher B., Williams, Jason D. & Shields, Jeffrey D., 2017, Parasites (Isopoda: Epicaridea and Nematoda) from ghost and mud shrimp (Decapoda: Axiidea and Gebiidea) with descriptions of a new genus and a new species of bopyrid isopod and clarification of Pseudione Kossmann, 1881, pp. 251-301 in Zootaxa 4365 (3) on page 259, DOI: 10.11646/zootaxa.4365.3.1, http://zenodo.org/record/1117980