查看更多>>摘要：This paper analyzes the consequences of the non-respect of the Rules of the Code to ascertain the valid subsequent designation of the nucleospecies (type species) of the nominal genus Trimeresurus Lacepede, 1804. The long accepted designation was invalid because it was based on a nominal species which was not among the prenucleospecies (originally included species) of the nominal genus. In contrast with the commonly accepted viewpoint which makes the Indian taxon Coluber gramineus Shaw, 1802 the nucleospecies of the genus, we show that this role is played by Trimeresurus viridis Lacepede, 1804, a species inhabiting the Lesser Sunda Islands and Timor and, as a nomen oblitum, a senior synonym of Trimeresurus albolabris insularis Kramer, 1977, a taxonnow considered a distinct species. The important nomenclatural implications of this finding are discussed here, especially with regard to the recent splitting of the genus Trimeresurus, The generic nomen Trimeresurus should be associated with the Trimeresurus albolabris group of species currently placed in the genus or subgenus Cryptelytrops Cope, 1860. A lectophoront (lectotype) is selected and described for Trimeresurus viridis Lacepede, 1804. Coluber viridis Bechstein, 1802 is an invalid objective junior synonym of Coluber gramineus Shaw, 1802. The current content of the genus Trimeresurus and of its eight subgenera is provided. Some clarifications or improvements to the Code are suggested.
查看更多>>摘要：A new species of small auchenipterid catfish is described based on a single specimen from the Amazon basin and is placed into a new genus. Spinipterus, new genus, is diagnosed by the following striking autapomorphic features: pectoral and dorsal-fin spines with four prominent rows of serrations; lateral margin of the skull roofing bones ornamented with a single row of spines; size reduction of hipurals; elongation and angle of posterior cleithral process; and adducted dorsal fin rests into a mid-dorsal groove. The new genus also differs from most other auchenipterid genera by having lower counts for some fin rays. Current diagnoses of auchenipterid genera do not allow us to place the new species into any genus, which requires us to propose the new genus Spinipterus.
GERARDO A. CONTRERAS-FELIXCARLOS E. SANTIBANEZ-LOPEZ
8页
查看更多>>摘要：Diplocentrus bicolor sp. n. from Huejuquilla el Alto, in northern Jalisco and two nearby localities in Zacatecas is described. It is compared to its geographically closer species from Zacatecas, Aguascalientes and Nayarit. A map with its known distribution is provided.
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