Palio nothus ( Johnston, 1838 )
publication ID |
https://doi.org/ 10.1080/00222933.2022.2040630 |
DOI |
https://doi.org/10.5281/zenodo.6771931 |
persistent identifier |
https://treatment.plazi.org/id/024087AB-D846-D13D-9AB3-25E6FDEFFEA4 |
treatment provided by |
Plazi |
scientific name |
Palio nothus ( Johnston, 1838 ) |
status |
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Palio nothus ( Johnston, 1838) View in CoL
( Figure 3 View Figure 3 (a))
Material examined
Cala Maset caves, Sant Feliu de Guíxols ( Spain), 41°47 ʹ 10”N, 3°2 ʹ 44”E, 16 January 2018, 1.7 m depth, 5 spcs, adults and egg masses, L = 8–14 mm; 7 May 2018, 1.4 m depth, 1 spc GoogleMaps ., adult and egg masses, L = 15 mm; L = 8–14 mm; 11 March 2020, 2 m depth, 7 spcs, juveniles.
External morphology
Body short, thick, background colour black with numerous white papillae. Mantle margin white. Rhinophores with lamellae, beige or white. Branchial leaves dark brown.
Ecology
Specimens were found mating and laying the egg masses on the bryozoans Amathia lendigera (Linnaeus, 1758) at the entrance of a cave, on overhangs. Egg masses were white with a soft brown colour and laid in a ‘C’ shape over the bryozoans. Juvenile specimens, only found in 2020, were also crawling on A. lendigera . Slugs are more active at night and may go unnoticed by divers and other observers during the day.
Distribution
North Sea ( England and Norway; Johnston 1838; Evertsen and Bakken 2013); Mediterranean Spanish coast: Catalonia ( Ballesteros et al. 2016; this study).
Remarks
This species apparently has an Amphi-Atlantic and Boreo-Arctic distribution, but its identity may need confirmation since is easily confused with Palio dubia (M. Sars, 1829) ; therefore, several records may have been misidentified ( Thompson and Brown 1984).
Genus Polycera Cuvier, 1816
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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