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A new species of Amphictene (Annelida Pectinariidae) from the Gulf of Mexico with a redescription of Amphictene guatemalensis (Nilsson 1928)

机译:来自墨西哥湾的一种新的两栖动物(AnnelidaPectinariidae)并重新命名了危地马拉的两栖动物(Nilsson1928年)

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摘要

The genus Amphictene is reported for the first time from Mexico. Previous records for America are restricted to Brazil (Amphictene catharinensis) (Grube, 1870), and Guatemala (Amphictene guatemalensis) (Nilsson, 1928). In this paper we describe a new species, Amphictene helenae >sp. n., characterized by the presence of three pairs of tentacular cirri, while other species have only two pairs. The new species is closely similar to Amphictene catharinensis, and can be distinguished by the presence of a circular group of glandular papillae inserted between the lines of glandular cirri present from the second segment. Amphictene guatemalensis is redescribed based on type material; it differs from the new species in the presence of two pairs of tentacular cirri on segments 1 and 2, six pairs of glandular cirri on the third segment, and four glandular lobes fused in pairs on the fourth segment.
机译:墨西哥首次报道两栖类。美国以前的记录仅限于巴西(Amphictene catharinensis)(Grube,1870)和危地马拉(Amphictene guatemalensis)(Nilsson,1928)。在本文中,我们描述了一个新物种,两栖Helenae > sp。 n。,其特征是三对触手毛虫的存在,而其他物种只有两对。该新物种与两栖华沙林非常相似,并且可以通过在第二个片段的腺毛线之间插入一个圆形的腺乳头来区分。危地马拉两栖动物是根据类型材料重新描述的;它与新物种的不同之处在于,在第1和第2段上有两对触手毛,在第三段上有六对腺毛,在第四段上有四对成对融合。

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