Abstract

New species of the pinnotherid crab genus GlassellaCampos & Wicksten, 1997 are described from western Atlantic waters along the east and west coasts of Florida, with the generic assignment of one being provisional. Glassella chaneyin. sp., Glassella martinin. sp., and Glassella taylorin. sp., all morphologically resemble the long-known species G. floridana (Rathbun, 1918) and overlap part of its distributional range, there occupying similar habitats and at least sometimes found with similar hosts. While genomic DNA sequencing has previously established the generic assignment of G. floridana, small sizes and suboptimal preservation histories of specimens representing the three new species have rendered all sequencing attempts unsuccessful, and thus not allowed their inclusion in molecular phylogenetic analyses. To facilitate present morphological comparisons, a rediagnosis of G. floridana was undertaken, and previously published illustrations were augmented, the latter now including figures of its previously undescribed male first gonopod and gonopodal plate. Comparisons of G. floridana to the three new species reveal striking diagnostic differences between all four species in their male first gonopods and varied configurations in the gonopodal plate or its probable homologs. These characters support the otherwise established separation of G. floridana from its congeners on the basis of its more strongly armed flexor margins of the fourth and fifth pereopods. In G. taylorin. sp., representing the smallest known member of Glassella, development of the third maxilliped and male first gonopod is so exceptional as to suggest the species may warrant eventual assignment to a separate genus.

中文翻译：

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1997年从美国佛罗里达的大西洋和墨西哥湾沿岸的Glassella Campos＆Wicksten属三个新的共生蟹（十足目：Brachyura：Pinnotheridae）

摘要

在佛罗里达州东海岸和西海岸的西大西洋水域中，描述了pinnotherid蟹属Glassella Campos＆Wicksten的新物种，1997年，其中一个为临时物种。Glassella chaneyi ñ。sp。，Glassella马提尼ñ。sp。和taylori n。sp。，在形态上都与久负盛名的G. floridana物种（Rathbun，1918年）相似，并且重叠了其分布范围的一部分，在那里占据着相似的栖息地，并且至少有时被发现具有相似的寄主。虽然基因组DNA测序以前已经确定了G. floridana的通用名称，代表这三个新物种的标本的小尺寸和不理想的保存历史使所有测序尝试均告失败，因此不允许将其包含在分子系统发育分析中。为便于目前的形态学比较，对克氏假单胞菌进行了重新诊断，并增加了先前发表的插图，后者现已包括其先前未描述的雄性第一个脚足类和角足纲板的图。的比较G. floridana三个新种揭示在他们的男性第一gonopods并在gonopodal板变化的构造或其可能的同系物的所有四个物种之间显着的差异诊断。这些字符支持否则建立的G分隔。在第四和第五骨足的更强壮的屈肌边缘的基础上，从其同类中获得了floridana。在G中。taylori ñ。sp。代表了已知的最小的Glassglass成员，第三个最大化的和雄性的第一个脚足类动物的发育是如此出色，以至于表明该物种可能需要最终归属于一个单独的属。