Ascobulla ulla (Ev. Marcus & Er. Marcus, 1970)

Delgado, Marlon, Freire, Fúlvio Aurélio de Morais, Meirelles, Carlos Augusto Oliveira de, Padula, Vinicius, Bahia, Juliana & Brandão, Simone Nunes, 2022, Sea slugs (Gastropoda: Heterobranchia) from Rio Grande do Norte, Northeastern Brazil, Papéis Avulsos de Zoologia 62, pp. 1-26 : 7

06. Ascobulla ulla (Ev. Marcus & Er. Marcus, 1970) ( Fig. 2F )

Material examined: Praia de Santa Rita, Extremoz, 24. VI.2009, six specimens, 2-7 mm (body length), leg M. Delgado ( MZSP 97049).

Description: Cylindrical external shell, translucent and slightly calcified with flat apex. Head with a cephalic shield with two lobes divided by a deep groove. Visceral mass visible through the shell, varying from light brown to orange. Cephalic shield translucent with numerous small white dots on its surface.

Geographic distribution: Western Atlantic: Aruba, Bahamas, Belize, Bermuda, Bonaire, Cayman Islands, Costa Rica, CuraÇao, Guadeloupe, Mexico, Turks & Caicos, USA, Venezuela, Virgin Islands, Brazil (Abrolhos, Ceará, Espírito Santo, Pernambuco, Rio Grande do Norte – present study, São Paulo) ( Marcus & Marcus, 1970; Mikkelsen, 1998; Rios, 2009; Galvão-Filho et al., 2015).

Figures

Figure 2. Heterobranch sea slugs from Rio Grande do Norte. (A) Micromelo undatus (15 mm – GEEFAA 294); (B) Haminoea antillarum (2 mm – GEEFAA 344); (C)Camachoaglaja berolina(7 mm– GEEFAA270);(D)Chelidonurahirundinina(16mm– GEEFAA1320);(E)Navanaxgemmatus (40mm– MZSP97068);(F)Ascobulla ulla (7 mm – MZSP 97049); (G) Oxynoe antillarum (25 mm – GEEFAA 352); (H) Elysia canguzua (15 mm – GEEFAA 295); (I) Elysia pawliki (25 mm – MZSP 97061); (J) Elysia subornata (14 mm – MZSP 97050); (K) Thuridilla malaquita (15 mm – phot. reg.); (L) Caliphylla mediterranea (9 mm – GEEFAA 349); (M) Aplysia cervina (70mm – MZSP 97074); (N) Aplysia dactylomela (76 mm – MZSP 97073);(O) Bursatellaleachii (75 mm – GEEFAA 324).