Redescription of Aspidosiphon (Paraspidosiphon) steenstrupii Diesing, 1859 (Sipuncula: Aspidosiphonidae) and the reinstatement of three species.

IF 2.4 3区生物学 Q2 MULTIDISCIPLINARY SCIENCES PeerJ Pub Date : 2025-02-25 eCollection Date: 2025-01-01 DOI:10.7717/peerj.19003

Itzahi Silva-Morales, Luis F Carrera-Parra

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Abstract

Sipuncula, specifically the family Aspidosiphonidae, faces taxonomic challenges due to brief original descriptions and the poor condition or loss of the type material. Detailed standardized redescriptions are essential to understanding the diversification in this group. Herein, a comprehensive redescription of Aspidosiphon (Paraspidosiphon) steenstrupii based on an extensive material collection from the tropical Western Atlantic is provided. Based on morphological data and the analysis of COI sequences, we delimited A. (P.) steenstrupii morphologically, restricting its distribution to the tropical Western Atlantic. Also, the redescriptions and proposals for reinstatement of A. (P.) exostomum, A. (P.) ochrus, and A. (P.) speculator, previously considered junior synonyms of A. (P.) steenstrupii, are included. Furthermore, a comprehensive discussion on diagnostic morphological features to recognize aspidosiphonid species and a detailed revision of synonyms of A. (P.) steenstrupii are included. Notable differences in morphology and genetic data suggest the need for revising the taxonomic status of several synonyms within the family, highlighting underestimated diversity in sipunculans.

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《刺蚜（拟刺蚜）steenstrupii Diesing, 1859》（刺蚜目：刺蚜科）的重新描述和三个种的恢复。

由于原始描述的简短和模式材料的不良或丢失，Sipuncula，特别是Aspidosiphonidae，面临着分类上的挑战。详细的标准化重新描述对于理解这一群体的多样化至关重要。在此，根据热带西大西洋的大量材料收集，提供了对Aspidosiphon (Paraspidosiphon) steenstrupii的全面重新描述。基于形态学资料和COI序列分析，我们在形态学上划分了a (P.) steenstrupii，将其分布限制在热带西大西洋。此外，还包括对a.p . exostomum、a.p . ochrus和a.p . speculator的重新描述和恢复建议，这些物种以前被认为是a.p . steenstrupii的低级同义词。此外，本文还全面讨论了蛛形蚜属的诊断形态学特征，并对蛛形蚜属的近义词进行了详细的修订。形态学和遗传数据的显著差异表明，有必要修改该科中几个同义词的分类地位，突出了被低估的虹吸管的多样性。

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来源期刊

PeerJ MULTIDISCIPLINARY SCIENCES-

CiteScore

4.70

自引率

3.70%

发文量

1665

审稿时长

10 weeks

期刊介绍： PeerJ is an open access peer-reviewed scientific journal covering research in the biological and medical sciences. At PeerJ, authors take out a lifetime publication plan (for as little as $99) which allows them to publish articles in the journal for free, forever. PeerJ has 5 Nobel Prize Winners on the Board; they have won several industry and media awards; and they are widely recognized as being one of the most interesting recent developments in academic publishing.