Diaulula variolata ( d'Orbigny , 1837)

Grandez, Alessandra, Ampuero, Andre & Barahona, Sergio P., 2023, Peruvian nudibranchs (Mollusca, Gastropoda, Heterobranchia): an updated literature review-based list of species, ZooKeys 1176, pp. 117-163 : 117

Diaulula variolata ( d'Orbigny, 1837)

Peruvian specimen photographs: Fig. 12

Habitat.

Benthic.

Depth.

2-15 m ( Schrödl and Hooker 2014).

Type material.

Not available.

Distribution.

From Pucusana (Lima, Peru, 12°28'S) (Guzman 2018b) to Punta Hualpén ( Concepción, Chile, 36°44'S) ( Marcus 1959).

Sampling/reporting sites.

In Peru, it was reported in Pucusana (Lima, 12°28'S) (Guzman 2018b), El Chaco (Ica, 13°49'S), Caleta Atenas (Ica, 13°49'S), Independencia Bay (Ica, 14°14'S), San Juan de Marcona (Ica, 15°21′S) ( Uribe et al. 2013), Dos Playas (Arequipa, 17°00'S) and Playa Calera (Arequipa, 17°15'S) ( Tejada-Pérez et al. 2018; Valdivia-Chavez et al. 2020), Caleta La Huata ( Camaná, Arequipa, 16°50'S) ( Zanabria 2020a), Terminal Portuario Matarani (Islay, Arequipa, 16°59'S) ( Zanabria 2020b), and Playa Jaboncillo (Ilo, Moquegua, 17°59'S) ( Zanabria 2020c).

In Chile, it was reported in Arica (18°26'S) ( Schrödl 2003), Coquimbo Bay (29°57'S) ( Bergh 1898; Valdés and Muniaín 2002), English Bay-Guanaqueros-Los Hornos (30°10'S), El Tabo ( Valparaíso, 33°27'S) ( Fischer and Cervera 2005b), Coliumo Bay (36°32'S) ( Schrödl 1996a, 1997), San Vicente Bay (36°44'S), and Punta Hualpén ( Concepción, 36°44'S) ( Marcus 1959). Within its Chilean distribution, several other recent observations (occurrences) have been reported ( iNaturalist 2023d).

Remarks.

This species had not been recorded outside Chile ( Fischer and Cervera 2005b) until the first reports from Peru ( Uribe et al. 2013). The specimen collected in Bernardo O’Higgins National Park (Chilean fjord region, 51°S) ( Aldea et al. 2011) needs confirmation ( Uribe et al. 2013).

Figures

Figure 12. Diaulula variolata, courtesy of Jaime Calvo-Perez.