ACTA CONCHYLIORUM Nr. 6 August 2002

Beiträge zur Kenntnis der Triviidae (Mollusca: Gastropoda)
V. Kritische Beurteilung der Genera und Beschreibung einer neuen Art der Gattung Semitrivia COSSMANN, 1903.

Von DIRK FEHSE, Berlin.

Summary

The mollusk family Triviidae TROSCHEL, 1863 is introduced. A systematical reorganization of this family is tried to make especially on the base of the radula, inner organs and the soft parts but also the fossil forms, the shell structure and the zoogeography were recognized. All described and distinct species are listed. Furthermore, the species, which were established since 1971 for fossil species and 1979 for recent ones, are valued.

The triviid genus Galeatrivia CATE, 1979 is considered to be synonymous with Triviella JOUSSEAUME, 1884 because of no differences in the animal and shell morphology. The same has be done with the genera Fossatrivia IREDALE, 1931, Nototrivia SCHILDER, 1932, Pseudotrivia SCHILDER, 1936, Willungia POWELL, 1938 and Robertotrivia CATE, 1979 which were kept as junior synonyms of Trivellona IREDALE, 1931; with Sulcotrivia SCHILDER, 1933 as a synonym of Niveria JOUSSEAUME, 1884; Discotrivia CATE, 1979 as a synonym of Pusula JOUSSEAUME, 1884 and with Decoriatrivia CATE 1979 and Circumscapula CATE 1979 as synonyms of Dolichupis IREDALE, 1930. A new genus Austrotrivia gen. nov. is introduced especially on the base of the radula morphology and a new species Semitrivia tsuchidai sp. nov. is described and briefly discussed with the other members of the genus.

The following species are newly combined with its respective genus because of the shell morphology:

Triviella millardi (CATE, 1979), Triviella verhoefi (GOSLINER & LILTVED, 1981), Triviella calvariola (KILBURN, 1980), Triviella virginiae (LILTVED, 1986), Triviella lemaitrei (LILTVED, 1986), Triviella khanya (LILTVED, 1986), Triviella massieri (MARTIN & POPPE, 1991), Triviella debruini (LORENZ, 1994), Trivellona caelatura (HEDLEY, 1918), Trivellona paucicostata (SCHEPMAN, 1909), Trivellona pompholugota (TATE, 1890), Trivellona pinguior (MARWICK, 1926), Trivellona suduirauti (LORENZ, 1996), Trivellona multicostata (LILTVED, 1986), Trivellona vesicularis (GASKOIN, 1836), Trivellona costata (GMELIN, 1791), Trivellona eratoides (LILTVED, 1986), Trivellona maoria (POWELL, 1938), Trivellona fracta (TOMLIN, 1916), Trivellona tasmanica (POWELL, 1938), Trivellona transiens (SCHILDER, 1935), Trivellona subtilis (SCHILDER, 1935), Trivellona tatei (SCHILDER, 1935), Trivellona avellanoides (MCCOY, 1867), Trivellona daphnes (SCHILDER, 1966), Trivellona schepmani (SCHILDER, 1941), Trivellona suavis (SCHILDER, 1931), Trivellona maoria (POWELL, 1938), Trivellona sibogae (SCHEPMAN, 1909), Trivellona abyssicola (SCHEPMAN, 1909), Trivellona sagamiensis (KURODA & HABE, 1971), Trivellona samariensis (CATE, 1979), Trivellona dumaliensis (CATE, 1979), Trivellona ijzermani (SCHILDER, 1937), Trivellona coxi (SCHILDER, 1936), Trivellona sharonae (HAYES, 1993), Trivellona eos (ROBERTS, 1913), Trivellona kiiensis (KURODA & CATE in CATE, 1979), Trivellona speciosa (KURODA & CATE in CATE, 1979), Trivellona opalina (KURODA & CATE in CATE, 1979), Trivellona shimajiriensi (MCNEIL, 1960), Trivellona finleyi (BEALS, 2001), Trivellona pleres (HATAI & NISIYAMA, 1948), Trivellona desirabilis (IREDALE, 1912), Trivellona valerieae (HART, 1996), Trivellona marlowi (ROSENBERG & FINLEY, 2001), Semitrivia hallucinata (LILTVED, 1984), Niveria lathyrus (BLAINVILLE, 1826), Niveria problematica (SCHILDER, 1931), Niveria peyreirensis (COSSMANN & PEYROT, 1924), Niveria avellanula (SACCO, 1894), Niveria dimidiatoaffinis (SACCO, 1894), Niveria excoccinella (SACCO, 1894), Niveria testudinella (WOOD, 1842), Niveria anglioaffinis (SACCO, 1894), Niveria pseudavellana (SACCO, 1894), Niveria gibba (SEQUENZA, 1880), Niveria dertominor (SACCO, 1894), Niveria pseudoasulcata (SACCO, 1894), Niveria recta (COUFFON, 1902), Niveria angliae (WOOD, 1848), Niveria dertoparvula (SACCO, 1894), Niveria dautzenbergi (SCHILDER, 1932), Niveria dertonensis (MICHELOTTI, 1847), Niveria avellana (SOWERBY, 1823), Niveria parvavellana (SACCO, 1894, Niveria selmae (B÷TTGER, 1901), Niveria spongicola (MONTEROSATO, 1923), Niveria lindae (PETUCH, 1994), Niveria liltvedi (GOFAS, 1984), Niveria rubescens (GRAY, 1833), Niveria fusca (SOWERBY, 1832), Niveria galapagensis (MELVILL, 1900), Niveria carabus (CATE, 1979), Niveria cherobia (CATE, 1979), Niveria campus (CATE, 1979), Niveria sanguinea (SOWERBY, 1832), Niveria maltbiana (SCHWENGEL & MCGINTY, 1942), Niveria circumdata (SCHILDER, 1931), Cleotrivia capillata (DOLIN, 1991), Cleotrivia carlottae (DOLIN, 1991), Cleotrivia wayiana (CATE, 1979), Dolichupis paucilirata (SOWERBY, 1870), Dolichupis artema (CATE, 1979), Dolichupis halians (CATE, 1979), Dolichupis burius (CATE, 1979), Dolichupis acutidentata (GASKOIN, 1836), Dolichupis pulloidea (DALL & OCHSNER, 1928), Dolichupis citeria (CATE, 1979), Dolichupis panamaensis (DALL, 1902), Dolichupis myrae (CAMPBELL, 1961), Dolichupis iota (CATE, 1979), Dolichupis vemacola (LILTVED, 1987), Dolichupis ritteri (RAYMOND, 1903), Pusula bermontiana (PETUCH, 1994), Pusula depauperata (SOWERBY, 1832), Pusula labiosa (GASKOIN, 1836), Pusula subpediculus (D'ORBIGNY, 1852), Pusula hybrida (SCHILDER, 1931), Pusula miccosukee (PETUCH, 1991), Pusula pediculus (LINN, 1758), Pusula pacei (PETUCH, 1987), Pusula dalli (PETUCH, 1994), Pusula pullata (SOWERBY, 1870).

Zusammenfassung

Die Molluskenfamilie Triviidae TROSCHEL, 1863 wird vorgestellt. Eine wird versucht eine systematische Neuordnung dieser Familie darzustellen, die sich besonders auf Basis vom Aufbau der Radula, innerer Organe und dem Tier ergibt. Auþerdem wurden dabei auch die fossilen Formen, die Schalen und die Zoogeographie ber¸cksichtigt. Alle beschriebene und g¸ltige Arten werden aufgelistet. Des weiteren werden alle Arten, die seit 1971 für fossile Taxa und seit 1979 f¸r die rezenten verffentlicht wurden, beurteilt.

Die Gattung Galeatrivia CATE, 1979 wird als Synonym von Triviella JOUSSEAUME, 1884 angesehen, weil es keine Unterschiede in den Tieren und den Schalen gibt. Auþerdem werden die Gattungen Fossatrivia IREDALE, 1931, Nototrivia SCHILDER, 1932, Pseudotrivia SCHILDER, 1936, Willungia POWELL, 1938 und Robertotrivia CATE, 1979 als Synonym zu Trivellona IREDALE, 1931 gestellt; Sulcotrivia SCHILDER, 1933 zu Niveria JOUSSEAUME, 1884; Discotrivia CATE, 1979 zu Pusula JOUSSEAUME, 1884 und Decoriatrivia CATE 1979 and Circumscapula CATE 1979 zu Dolichupis IREDALE, 1930. Die Gattung Austrotrivia gen. nov. wird besonders auf Basis der Radulamorphologie eingeführt und Semitrivia tsuchidai sp. nov. wird beschrieben und mit verwandten Arten diskutiert.

Die folgenden Arten wurden wegen ihrer Gehäusemorphologie anderen Gattungen zugeordnet: