Solidobalanus (Solidobalanus) ciliatus   (Hoek),  1913 (Barnacle)
Organism information awaits expert curation
Class: Maxillopoda

Color: The color of the shell is dirty-white, striped longitudinally and spotted here and there with red; the rostrum is in most specimens almost perfectly white. The radii are more or less distinctly orange colored.

Parietes, radii and basis without pores. Basis calcareous. Radii broad, summits oblique in varying degree. Surface of compartments furrowed. Scutum with the apex sharply pointed, articular ridge not prominent, adductor ridge hardly visible. Tergum with a prominent articular ridge and a broad spur with rounded extremity. Labrum with three teeth on each side of notch; palpi with ciliae in groups along inferior margin.
The shape of the shell is conical in younger specimens more globular. All have the orifice rather large, the radii broad, with their summits oblique, slightly oblique, or even, in one of the specimens, quite parallel to the basis; the summits of the alae are rounded. The compartments and the radii have no pores. In the lower part of the shell longitudinal ridges are found on the interior surface; these touch each other at several places and also close to the basis, which causes a transverse section to sometimes look as if pores were present. The basis has no pores; the longitudinal ribs of the inner surface of the shell can be followed on the basis, where they radiate from the center.
The scutum is of a regular triangular shape, with the tergal margin as long as the basal margin, or even slightly longer; it is pointed towards the apex. Occludent margin indistinctly toothered, basal margin strongly convex. Lines of growth rather numerous, not very prominent. Surface indistinctly striated longitudinally. On the inner surface, the articular ridge not prominent, sloping towards basi-tergal angle; adductor ridge hardly to be distinguished represented by a slight uplifting only of the internal surface. A small and shallow pit for the lateral depressor muscle and an indication only of the cavity for the adductor muscle.
The tergum has the apex not produced; the carinal margin is rounded, the scutal margin straight. The longitudinal furrow is represented by a slight depression, the spur is situated at a little distance from the basi-scutal angle; it is not very long and its width, measured at the height of the basal margin, is about two-fifths of the length of that margin. Its lower end is rounded; the basal margin makes an angle with the posterior margin of the spur. The articular ridge is prominent and the crests for the depressors are well-developed. On the inner surface a triangular part of the surface situated at the apex of the valve, is distinctly striated transversely.
Mouth parts- Labrum: Notch wide at entrance, three teeth on each side. Delicate hairs disposed along notch and between teeth 1 and 2.
Palpus: broad, stout, somewhat quadrangular, with the superior margin nearly straight and the inferior one arched. Hairs along superior margin numerous, but situated at some distance from each other. They combine near free extremity with the very numerous and longer hairs disposed on distal part of outer surface. A relatively large part of outer surface is covered with hairs. The inner surface bears a longitudinal group of shorter and curled hairs situated close together, the same sort of hairs being also seen on the part of the inner surface between that longitudinal group and the superior margin. The inner surface near the free extremity, and the inferior margin, are furnished with microscopical hairs or ciliae.
Mandibles: Teeth 1 and 2 pointed, their extremities, at somewhat greater distances from each other than those of 2 and 3. Teeth 2 and 3 distinctly double. Tooth 3 thick. Teeth 4 and 5 close together, rather thick. Inferior angle terminating in two small, pointed spines, or rudimentary teeth.
Maxilla: Notch small. The inferior pair of longer spines situated on an indistinct step-like projection in the larger (older) specimen only. A group of smaller spines is situated on the edge behind the inferior pair of larger spines. Between the small notch and the inferior pair of spines, 5 spines are arranged in a single row and alternately point with their extremities to one or the other side.
Outer maxillae: Outer lobe broad at the basis, the exterior circumference regularly rounded, and the apex somewhat pointed. Hairs on distal part numerous and delicate; the row of hairs extending from the outer lobe to the inner one partly double, these hairs standing off horizontally. Hairs on inner lobe not numerous, but disposed in several rows; a group of short spine-like hairs under and behind the longer feathered ones.
Cirri: Six pairs of cirri present.
The basal or supporting part bears dorsally an excrescence that is not pointed however, but blunt at the extremity. The penis is somewhat tapering towards the extremity and here is furnished with slightly stronger hairs, placed in two diverging groups.

Synonym (s)
Balanus (Solidobalanus) ciliatus Hoek 1913
Balanus (Solidobalanus) ciliatus Broch 1931
Balanus (Solidobalanus) ciliatus Nilsson-Cantell 1934a
Balanus (Solidobalanus) ciliatus Nilsson-Cantell 1934b
Balanus (Solidobalanus) ciliatus Stubbings 1936
Balanus (Solidobalanus) ciliatus Utinomi 1969
Balanus (Solidobalanus) ciliatus Zullo and Newman 1964
Balanus ciliatus Nilsson-Cantell 1938a

Common Name (s)
Economic Importance and Threats



• Tamil Nadu, Gulf of Mannar INDIA (Record: 2006)
• Arabian Sea (Record: 2006)
• Persian Gulf (Record: 2006)
• SRI LANKA (Record: 2006)
• East Coast INDIA (Record: 2006)

Literature Source(s)
  • Fernando, SA (2006) Monograph on Indian Barnacles Ocean science and technology Cell, Kochi 9-199 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

Page last updated on:2012-05-22

Back to Search