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The Conus Biodiversity Website

CATALOGUE OF RECENT AND FOSSIL CONUS

  Conus sukhadwalai Röckel & da Motta, 1983.

Range: S. India.

Description: Medium-sized, moderately solid. Last whorl conical to slightly pyriform, outline convex at adapical third and straight to slightly concave below. Shoulder angulate. Spire low; outline concave; apex projects from an otherwise almost flat spire. Larval shell of about 3 whorls, maximum diameter 0.8 mm. Teleoconch sutural ramps flat to slightly concave, with 2 increasing to 4-5 spiral grooves in early whorls, grading into many weak spiral striae in late whorls. Last whorl with a few weak spiral ribs at base.

Shell Morphometry
  L 37-50 mm
  RW 0.19-0.29 g/mm
  RD 0.59-0.66
  PMD 0.85-0.97
  RSH 0.01-0.07

Ground colour whte suffused with violet. Last whorl with a broad, continuous to interrupted orange to orangish brown spiral band on each side of centre; dark brown spots and axial flames edge the adapical band on both sides and the upper side of the abapical band. Larval whorls light orange. Teleoconch sutural ramps with brown radial markings. Aperture pale violet.

Periostracum olive-brown, thin, translucent, with about 8-10 widely spaced tufted spiral lines on last whorl including shoulder.

Habitat and Habits: In 15-150 m, in sand.

Discussion: C. sukhadwalai is similar to C. malacanus, C. recluzianus, C. shikamai, and C. voluminalis. C. malacanus is a larger and somewhat heavier (L 45 mm: RW 0.35) sympatric species, which differs in its broader last whorl (RD 0.65-0.74), higher spire (RSH 0.10-0.17), and tuberculate early and carinate late postnuclear whorls. The periostracum of C. malacanus has no tufted spiral lines. C. recluzianus attains larger size and is lighter in weight (L 45 mm: RW 0.14-0.22); it has a narrower last whorl (RD 0.49-0.60), prominent spiral sculpture on its late sutural ramps and undulate to tuberculate postnuclear whorls. For distinctions to C. shikamai and C. voluminalis, see the Discussions of those species.

Range Map Image

C. sukhadwalai Range Map

This section contains verbatim reproductions of the accounts of 316 species of Conus from the Indo-Pacific region, from Manual of the Living Conidae, by Rckel, Korn and Kohn (1995). They are reproduced with the kind permission of the present publisher, Conchbooks.

All plates and figures referred to in the text are also in Rckel, Korn & Kohn, 1995. Manual of the Living Conidae Vol. 1: Indo-Pacific Region.

The range maps have been modified so that each species account has it own map, rather than one map that showed the ranges of several species in the original work. This was necessary because each species account is on a separate page on the website and not confined to the order of accounts in the book.

 

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