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New records of land mollusks from southeastern Selva Lacandona,Chiapas,Mexico

机译：来自墨西哥恰帕斯州东南的塞尔瓦·拉坎多纳东南部的软体动物新记录

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摘要

Records of land mollusks from, eastern Chiapas, Mexico, date from the mid 1800s (Morelet, 1849, 1851). By the late 1950s, Bequaert (1957) noted that 41 species had been reported in the literature from Chiapas and that an additional 31 species had been collected by an expedition led by R. A. Paynter in 1954 to the mid-eastern section of the Selva Lacandona (Lacandon Jungle), the montane rainforest that stretches from Chiapas into Guatamala and the southern part of the Yucatán Peninsula (Figure 1). Subsequently, Avenda?o-Gil et al. (2002) found 28 taxa in: the southwestern corner of Selva Lacandona. Land mollusks for the present study were collected in the southeastern corner of Selva Lacandona during a freshwater molluscan project, during which trails inside the tropical rainforest were visited and shells and humus samples taken. To date, 14 families, and 33 species have been recognized from these samples. The Helicinidae appears to be the most diverse family with eight species, followed by the Subulinidae with six. Seven families are represented by a single species only. The current malacofauna of the region has a close relationship with that of Guatemala, which supports the existence of a Chiapas-Guatemalan biogeographical subregion in Central America (Figure 3) as proposed by Bequaert (1957).
机译：来自墨西哥恰帕斯州东部的软体动物的记录可追溯到1800年代中期（Morelet，1849年，1851年）。到1950年代后期，Bequaert（1957）注意到，恰帕斯州的文献中已经报道了41种，并且在1954年RA Paynter率领的一次远征中，塞尔瓦拉坎多纳（Selva Lacandona）的中部地区还收集了另外31种（ Lacandon Jungle），一种从恰帕斯州延伸到瓜塔马拉和尤卡坦半岛南部的山地雨林（图1）。随后，Avenda？o-Gil等人。 （2002年）在Selva Lacandona的西南角发现了28个分类单元。用于本研究的陆地软体动物是在淡水软体动物项目期间在塞尔瓦拉坎多纳（Selva Lacandona）的东南角收集的，在此期间参观了热带雨林内部的小径，并采集了贝壳和腐殖质样品。迄今为止，已经从这些样品中识别出14个科和33种。 lic科似乎是最多样化的科，有八种，其次是亚the科（Subulinidae），有六种。七个科只代表一个物种。该地区目前的马拉科动物群与危地马拉的疟疾动物群关系密切，这支持了Bequaert（1957）提出的中美洲恰帕斯州-危地马拉生物地理分区的存在（图3）。

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