Bullia granulosa ( Lamarck, 1822 )

Simone, Luiz Ricardo L. & Pastorino, Guido, 2014, Comparative morphology of Dorsanum miran and Bullia granulosa from Morocco (Mollusca: Caenogastropoda: Nassariidae), African Invertebrates 55 (1), pp. 125-125 : 136-139

publication ID	https://doi.org/ 10.5733/afin.055.0107
DOI	https://doi.org/10.5281/zenodo.7661973
persistent identifier	https://treatment.plazi.org/id/03C587A1-DE4C-FFB8-B9D7-FF5BFB9DFA47
treatment provided by	Felipe
scientific name	Bullia granulosa ( Lamarck, 1822 )
status

Treatment

Bullia granulosa ( Lamarck, 1822) View in CoL

Figs 9–15, 18–20 View Figs 1–20 , 43–55 View Figs 43–48 View Figs 49–53 View Figs 54–55

Terebra granulosa Lamarck, 1822: 291 .

Complete synonymy in Cernohorsky 1984: 28; Adam & Knudsen 1984: 66 and Allmon 1990: 28.

Description:

Shell ( Figs 9–13 View Figs 1–20 ). Similar to preceding species. Differences:Color uniform bright purplebeige; aperture brown. Protoconch wider ( Figs 9–11 View Figs 1–20 ), occupying ~ of shell width in adult forms, dome-shaped, of two whorls ( Fig. 13 View Figs 1–20 ); boundary between protoconch and teleoconch unclear. Sculptured, with axial threads in first teleoconch whorl ( Fig. 13 View Figs 1–20 ), two series of subsutural nodes in remaining whorls, each node axially elongated, those closer to suture slightly smaller; growth lines in the rest of whorl. Region at left of aperture possessing ~ 8 spiral cords, somewhat uniformly distributed in left side of inner lip and canal ( Figs 9, 10, 12 View Figs 1–20 ), inferior cords slightly narrower than superior cords. Inner lip with small protuberance in base of canal ( Fig. 12 View Figs 1–20 ).

Head-foot ( Figs 43, 44, 47 View Figs 43–48 ). Characters similar to those of preceding species, including socket-like head ( Fig. 44 View Figs 43–48 ), bifid columellar muscle ( Fig. 43 View Figs 43–48 : cm), and pair of small metapodial tentacles ( Fig. 43 View Figs 43–48 : et). Differences: Head somewhat narrower, without eyes. Female lacking detectable cement gland at foot sole.

Operculum ( Figs 14, 15 View Figs 1–20 ). Elliptical, horny, pale brown. Nucleus inferior, subterminal but close to inferior edge. Outer surface with normal concentric growth lines, forming undulations. Scar oval, occupying about ½ of inner surface, somewhat dislocated closer to inner edge; flanked by strong and wide ridge in outer edge ( Fig. 15 View Figs 1–20 ).

Mantle organs ( Figs 45, 46 View Figs 43–48 ). Similar to those of preceding species. Remarks and differences: Low, broad fold of siphon’s right base separates anterior end of osphradium from gill and is somewhat taller ( Fig. 46 View Figs 43–48 : sf). Osphradium (os) with filaments shorter, but with longer lateral projections ( Fig. 45 View Figs 43–48 : os). Ctenidial vein (cv) relatively broader, weakly expanded at mid-level. Gill with much shorter filaments, apex approximately at mid-level ( Fig. 45 View Figs 43–48 : gi). Anus shortly siphoned, located in front of anterior of pallial cavity ( Fig. 46 View Figs 43–48 : an).

Visceral mass. Not seen in detail.

Circulatory and excretory systems ( Fig. 46 View Figs 43–48 ). Similar to preceding species, except that the dorsal side of the renal lobe is more developed (kl).

Digestive system ( Figs 47–53 View Figs 43–48 View Figs 49–53 ). Main features and general plan similar to those of preceding species. Remarks and differences: Proboscis with similar arrangement, but possessing stronger transverse muscle, covering both ventral surface of rhynchodeal wall ( Fig. 47 View Figs 43–48 : mf), and between oesophagus and odontophore in buccal mass ( Fig. 49 View Figs 49–53 : tm). Odontophore proportionally shorter, ~50 % of length of proboscis ( Fig. 49 View Figs 49–53 : od). Odontophore muscles with similar arrangement ( Figs 50, 52, 53 View Figs 49–53 ), except for: m1, no especially developed jugal muscle; mc, somewhat longer, reaching ~ 90% of length of cartilages up to region close to their posterior end ( Figs 52, 53 View Figs 49–53 ); m2b, originating as 4–5 branches, uniting themselves in region before entrance in odontophore ( Fig. 52 View Figs 49–53 ); m2c, slightly broader ( Figs 50, 52 View Figs 49–53 ); m2d, pair of auxiliary muscles of m2b, running externally, with same origin, inserting jointly with m2b ( Figs 50, 52 View Figs 49–53 ); m4, pair slightly broader ( Fig. 52 View Figs 49–53 ); m6, thin horizontal muscle, about 80% of cartilage length ( Figs 52, 53 View Figs 49–53 ); m9, similar, but only present as a single pair ( Fig. 52 View Figs 49–53 ); m9a, much more developed, about as wide as m4, broadly covering radular nucleus ( Figs 52, 53 View Figs 49–53 ). Subradular cartilage expanded in exposed region of radula into buccal cavity ( Fig. 50 View Figs 49–53 : sc), covering neighbouring surface of radula; oc, odontophore cartilages similarly fashioned, except for greater extent of fusion, along ~10% their length ( Fig. 53 View Figs 49–53 ).

Radula similar to that of preceding species ( Figs 18–20 View Figs 1–20 ): rachidian with ~ 21 cusps and thinner; base of the rachidian less curved; lateral tooth also similar, with inner cusp rising from base being more pronounced ( Fig. 19 View Figs 1–20 ). Salivary glands with similar features, except for their ducts, with clear expansion in region in front of their aperture, situated within dorsal folds of buccal cavity (df), and salivary aperture more laterally positioned ( Fig. 49 View Figs 49–53 : sa). Anterior oesophagus much broader, about as broad as odontophore ( Figs 48 View Figs 43–48 , 49 View Figs 49–53 : ea). Valve of Leiblein also broader ( Fig. 48 View Figs 43–48 : vl), with well-developed inner cilia ( Fig. 51 View Figs 49–53 : vc). Middle and posterior oesophagus with similar characters ( Figs 48 View Figs 43–48 , 51 View Figs 49–53 : em, ep). Gland of Leiblein very narrow, elongated, filiform ( Figs 48 View Figs 43–48 , 51 View Figs 49–53 : gl); ~ 3× longer than middle oesophagus and ~10× narrower than it; twisted between anterior and middle thirds, just in region where aorta passes ( Figs 48 View Figs 43–48 : aa). Duct of gland of Leiblein almost undetectable, aperture simple ( Fig. 51 View Figs 49–53 : ga). Stomach and intestine not examined in detail. Rectum and anus described above (pallial cavity).

Genital system. Male. No male was available for examination.

Female ( Fig. 46 View Figs 43–48 ). General features similar to those of preceding species; except for relatively shorter albumen gland (ag) and female pore (fp) being situated further away from anus. No cement gland detectable.

Central nervous system ( Figs 54, 55 View Figs 54–55 ). Similar to that of preceding species, except for narrower commissure of buccal ganglia ( Fig. 55 View Figs 54–55 : bg), and longer commissure between cerebral ganglia. Statocyst located in antero-ventral region of pedal ganglia (sy).

Measurements of shells. MNHN 1♀: 29.4 × 10.7 mm.

Distribution: From Morocco to Democratic Republic of the Congo.

Habitat: Sandy bottoms, ~ 15 m depth.

Material examined: 1♀, 1 shell: MOROCCO: Agadir Bay ; Qued Sours, off Sousse River estuary, 30°22'N 09°37.9'W, from 15 m depth, MNHN, (Radial I; sandy bottoms, Moukrin & Gofas col. 08.v.1999) GoogleMaps .