Sinistral Trochulus hispidus (Linnaeus, 1758) Hairy Helicellid

Sinistral specimen is on the left

Sinistral Trochulus hispidus (Linnaeus, 1758) Hairy Helicellid

    In flood debris by the River Ribble, at Samlesbury, near Preston, Lancashire, England (7.9 mm.). Collected by Carl and Craig Ruscoe. Image Courtesy of Simon Aiken.

    Trichia Hartmann, 1840 is a junior homonym of Trichia De Haan, 1839 [Crustacea] and therefore not available for purposes of zoological nomenclature. The ICZN had to exercise its plenary powers (ICZN, 2004) because there was a petition to conserve Hartmann's name.

    ICZN (International Commission for Zoological Nomenclature), 2004. OPINION 2079 (Case 2926) Trichia Hartmann, 1840 (Mollusca, Gastropoda): proposed conservation; and Trichiinae Ložek, 1956 (Gastropoda): proposed emendation of spelling to Trichiinae, so removing the homonymy with Trichiinae Fleming, 1821 (Insecta, Coleoptera) not approved. Bulletin of Zoological Nomenclature 61, Part 3. Sept. 30.

Abstract. The Commission has ruled that the name Trichia Hartmann, 1840 (Mollusca, Gastropoda) is not conserved. The names Trochulus Chemnitz, 1786, Trichia De Haan, 1839 (Crustacea, Brachyura) and Trochulinae Lindholm, 1927 are placed on Official Lists. Trichia Hartmann, 1840, Trichia Nietner, 1861 (Lepidoptera), Trichia Reuter, 1875 (Heteroptera), and Trichiinae Ložek, 1956 are placed on Official Indexes.