Radula of Siphopteron quadrispinosum from Koumac

January 16, 2004
From: Bill Rudman

To accompany my report Siphopteron quadrispinosum from Koumac, New Caledonia, here are some scanning electron micrographs of the radula.
The radular formula is 17 x 4.1.0.1.4

PHOTOS:
• Upper right: whole radula. Scale = 100 microns.
• Lower left: section of left half showing outer lateral teeth. Scale = 20 microns.
• Lower right: section showing innermost lateral teeth with two prominent denticles on the cutting edge. Scale = 50 microns.

The two large denticles on the cutting edge of the innermost lateral teeth are characteristic of S. quadrispinosum.

Best wishes,
Bill Rudman

Rudman, W.B., 2004 (Jan 16) Radula of Siphopteron quadrispinosum from Koumac. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11927

Here is a further electron micrograph showing a section of the right side of radular showing large innermost lateral teeth and smaller outer teeth. Scale = 50 microns.

Factsheet

Siphopteron quadrispinosum

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