Figures 21-25 from: Bouaziz-Yahiatene H, Inäbnit T, Medjdoub-Bensaad F, Colomba MS, Sparacio I, Gregorini A, Liberto F, Neubert E (2019) Revisited – the species of Tweeting vineyard snails, genus Cantareus Risso, 1826 (Stylommatophora, Helicidae, Helicinae, Otalini). ZooKeys 876: 1-26. https://doi.org/10.3897/zookeys.876.36472

Figures 21-25 Pictures of living specimens of Cantareus species 21Cantareus apertus: on the left a black specimen with brown shell from Roccapalumba, Sicily, Italy, 15.XI.2009 (Coll. F. Liberto 5532); on the right a yellow specimen with green shell from Prizzi, Sicily, Italy, 15.XI.2009 (Coll. F. Liberto 5545) 22Cantareus apertus, Niscemi, Sicily Italy, 22.X.2016 23Cantareus apertus, Niscemi, Sicily, Italy, 22.X.2016, specimens defending themselves by emitting bubbles of slime and a series of tweeting sounds 24Cantareus apertus, Foggia, Ordona, 41.313889N, 15.622222E, 12.10.2018, leg. G. Martucci (photo/collection I. Sparacio 5031/9) 25Cantareus subapertus, Algeria, Parc National du Djudjura, 1700 m, 11.X.2008 (Photographs Vela Errol).