Diaulula punctuoalata (d'Orbigny, 1837)

Cetra, Nicolás & Roche, Andrea, 2023, Nudibranchia (Mollusca: Gastropoda) from San Matías Gulf, Northern Argentine Patagonia, Zootaxa 5244 (5), pp. 455-473 : 460

publication ID	https://doi.org/ 10.11646/zootaxa.5244.5.3
publication LSID	lsid:zoobank.org:pub:21F87739-7A95-4A6C-8887-A8E22A40120A
DOI	https://doi.org/10.5281/zenodo.7663788
persistent identifier	https://treatment.plazi.org/id/4D6287F0-9D49-1B43-FF01-FD582E64838A
treatment provided by	Plazi
scientific name	Diaulula punctuoalata (d'Orbigny, 1837)
status

Treatment

( Figures 2C, 2D View FIGURE 2 , 3D View FIGURE 3 )

Material examined. Argentina, Río Negro : Las Grutas , one specimen, 10m, 2007 (MLP-Ma 14655); Las Grutas , one specimen (MLP-Ma 13528); Caleta Los Hornitos , one specimen, intertidal, 02/2017; San Antonio Este, Punta Villarino, two specimens ( MACN 13368 View Materials ); San Matías gulf, SAO campaign, station 117, one specimen (MLP-Ma 14177) .

Description. Length up to 100 mm, body color varies from whitish to yellowish, some specimens presenting two rows of dark spots that extend from the rhinophores to the gill. Dorsal mantle densely covered by thin caryophyllidia. Rhinophoral and branchial sheaths elevated, covered with caryophyllidia. Oral tentacles digitiform. 6-7 bipinnate gill leaves around the anal papilla ( Figure 2C View FIGURE 2 ). Foot bilabiate; upper lip notched. The radular formula is 24 x 27.0.27. (MLP-Ma 14655). Lateral teeth simple and smooth ( Figure 3D View FIGURE 3 ).

Geographic distribution and depth range. Argentina, Buenos Aires (37°50´S; 56°11´W) ( Carcelles 1950), Nuevo gulf, in the Magellanic Province (Atlantic Ocean), throughout the Pacific Magellanic Province , to Arica, northern GoogleMaps Chile, in the Peruvian Province (Pacific Ocean) ( Valdés & Muniain 2002). Common in the SMG on rocky bottoms between six and 25 m depth .

Biology. The egg mass in a whitish wavy gelatinous ribbon about 70 mm long, with up to four complete spiral turns ( Figure 2D View FIGURE 2 ).

Remarks. Magellanic species occasionally found in the Peruvian Province. This species is clearly differentiated from Diaulula hispida by the absence of the crest note ( Valdés & Muniain 2002).