Tyrinna delicata (Abraham, 1877)

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

Tyrinna delicata (Abraham, 1877)

Peruvian specimen photographs: Fig. 9

Habitat.

Benthic.

Depth.

0-22 m ( Uribe et al. 2013).

Type material.

Holotype NHMUK 1995038- Chiloé Island, Chile.

Distribution.

Amphi-South American. From Pucusana (Lima, Peru, 12°25'S) ( Fabián Avilés pers. comm.) to Strait of Magellan (Chile, 53°S) and Peninsula Valdés (Argentina, 42°S) ( Schrödl and Millen 2001; Uribe et al. 2013; Araya and Valdés 2016).

Sampling/reporting sites.

In Peru, two specimens were collected (MHNURP, specimens currently lost) in Playa Las Ninfas (Pucusana, Lima, 12°28'49"S) on 23 October 2019, at 1.5-2.0 m depth, 55-60 mm length (Fig. 9 ) ( Fabián Avilés pers. comm.). In Peru, this species was also reported in San Juan de Marcona (Ica, 15°21′S) and Isla Blanca (Arequipa, 17°00'S) ( Uribe et al. 2013). In Chile, it was reported in Caleta Obispito (Caldera, Atacama, 26°45'51"S) ( Araya and Valdés 2016) and in several points (occurrences) such as Reserva Nacional Pingüino de Humboldt (29°15′S), Playa El Francés (Coquimbo, 30°05'S), Pichicuy (32°20′S), Caleta Cocholgüe-Tomé (36°35'S), Caleta Chome ( Península de Hualpén, 36°48'S), Caleta Chaihuín (39°56'S), Faro San Isidro (Strait of Magellan, 53°28′S) ( iNaturalist 2023a). It was also reported in San Juan Fernández Islands (33°38′S) ( Araya and Valdés 2016). In Argentina it was observed (occurrences) in Baliza Davison (Tierra del Fuego, 54°56'S), Grand Jason (Jason Islands, 51°04'S), La Tranquera (46°02'S), Golfo San Jorge (46°00'S), Punta del Marqués (Rada Tilly, 45°57'S), Parque Interjurisdiccional Marino Costero Patagonia Austral (PIMCPA, 45°02'S), Camarones Bay (44°46'S), Golfo Nuevo (42°47'S), and Golfo San José (42°24'S) ( iNaturalist 2023c).

Remarks.

This species was originally identified as Tyrinna nobilis Bergh, 1898, a name that is currently not accepted.

Figures

Figure 9. Tyrinna delicata, courtesy of Fabian Aviles.