Gyge branchialis Cornalia & Panceri 1861

Gyge branchialis Cornalia & Panceri, 1861 Gyge branchialis Cornalia & Panceri, 1861: 90–111, pls. 1, 2 (Italy, infesting Upogebia pusilla (Petagna, 1792)); Boyko et al., 2017: 262–264 (comprehensive synonymy through 2016); Mortelmans et al., 2017: 145–146 (mention); Artüz, 2018: 499 (mention); Dairain et al., 2018b: 47, 52, 56 (Arcachon Bay, France, infesting Upogebia cf. pusilla); Dairain et al., 2018a: 88–89 (Arcachon Bay, France, infesting Upogebia cf. pusilla); Corral et al., 2019: 74 (mention); Dairain et al., 2019a: 206, 209 (mention); Dairain et al., 2019b: 364–367 (Arcachon Bay, France, infesting Upogebia cf. pusilla); Dairain et al., 2019c: 320, 321, 324, 325, 326, 328–330 (Arcachon Bay, France, infesting Upogebia cf. pusilla); Pillay, 2019: 64 (mention). Pascal et al., 2020: 2193, 2200–2201 (Arcachon Bay, France, infesting Upogebia pusilla); Bortolini Rosales et al., 2021: 256 (mention); Dumbauld et al., 2021: 1008 (mention); Richard et al., 2021: 749 (mention); Causon et al., 2022: 777 (mention); Dairain et al., 2024: e10400 (mention); De Grave & Boyko, 2024: 16 (mention); Gozlan et al., 2024: 100250 (mention). Material Examined: “ohne Fundort” (without location): Ovigerous female (11.3 mm) (SMF 62934), infesting left branchial chamber of female Upogebia pusilla (Petagna, 1792) (16.1 mm CL), mature female (9.3 mm) (SMF 62935) with epicaridium larvae, mature male (3.1 mm), infesting left branchial chamber of female U. pusilla (16.6 mm CL), ovigerous female (7.0 mm), mature male (2.7 mm) (SMF 62936), infesting right branchial chamber of U. pusilla (11.3 mm CL), mature female (9.6 mm) with epicaridium larvae, mature male (3.0 mm) (SMF 62937), infesting left branchial chamber of female U. pusilla (14.3 mm CL), mature female (9.7 mm) with epicaridium larvae, mature male (3.9 mm) (SMF 62938), infesting left branchial chamber of female U. pusilla (15.0 mm CL), ovigerous female (8.6 mm), mature male (2.4 mm) (SMF 62939), infesting right branchial chamber of female U. pusilla (13.3 mm CL), mature female (9.1 mm) (SMF 62940) from unknown host (loose in jar), mature female (9.6 mm) with epicaridium larvae, mature male (3.4 mm) (SMF 62941), infesting right branchial chamber of female U. pusilla (14.3 mm CL), ovigerous female (9.7 mm), mature male (3.1 mm) (SMF 62942), infesting left branchial chamber of female U. pusilla (15.0 mm CL), mature female (10.1 mm), mature male (3.1 mm) (SMF 62943), infesting right branchial chamber of female U. pusilla (16.1 mm CL), mature female (7.6 mm) with epicaridium larvae, mature male (2.7 mm) (SMF 62944), infesting right branchial chamber of female U. pusilla (13.6 mm CL), mature female (7.0 mm) with epicaridium larvae, mature male (2.6 mm) (SMF 62945), infesting right branchial chamber of female U. pusilla (11.7 mm CL) (SMF 5069). Hosts: Upogebia deltaura (Leach, 1816), U. pusilla (Petagna, 1792), U. stellata (Montagu, 1808), and U. tipica (Nardo, 1869) (see Boyko et al. 2017). Remarks: Although the material examined is without locality data, U. pusilla is widely distributed in the North Atlantic, Mediterranean and the Black Sea. SMF 5069 contains nine male (11.7–17.4 mm CL), 17 female (11.3–17.3 mm CL), and 10 ovigerous female (12.4–16.0 mm CL) U. pusilla; no mention was made of any parasite in this lot by Sakai (2006: 53).