A New Varunid Subfamily (Decapoda, Brachyura, Grapsoidea, Varunidae) for Crabs From European and West African Waters, With the Description of Two New Genera and Two New Species

IF 2.3 2区生物学 Q2 ECOLOGY

Ecology and Evolution Pub Date : 2025-07-22 DOI:10.1002/ece3.71712

Isabel Muñoz, J. Enrique García-Raso, Jose A. Cuesta

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Abstract

The subfamily Asthenognathinae is currently composed of a single genus, Asthenognathus Stimpson, 1858, with three species, A. inaequipes Stimpson, 1858, A. hexagonus Rathbun, 1909 (both from the Indo-West Pacific), and A. atlanticus Monod, 1933 (European and West Tropical African waters). All Asthenognathus species are difficult to collect due to their small size and symbiotic lifestyle with fossorial organisms. The examination of specimens of A. atlanticus from European and West African waters deposited in scientific collections shows significant morphological and molecular differences with the Indo-West Pacific species, which makes the creation of a new subfamily (Schubartinae n. subf.) and two new genera necessary. The identity of A. atlanticus, the only species found along the East Atlantic and Mediterranean waters, is clarified, and a new genus, Dudekemus n. gen., is established for this species, Dudekemus atlanticus (Monod, 1933) n. gen., n. comb. This study also describes another new genus, Schubartus n. gen., based on morphological differences and genetic data. These two new genera can be distinguished from Asthenognathus by the carapace proportions and differences in the structures of the male pleonal somites, pereiopods and endostome. In addition, two new species distributed in Guinea-Bissau and Mauritania, Schubartus mauritanicus n. gen., sp. nov., and S. ngankeeae n. gen., n. sp., are described. A key for species of the subfamilies Asthenognathinae and Schubartinae n.subf. is provided.

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欧洲和西非水域蟹类一新亚科（十足目，短肢目，蟹总科，蟹科），附二新属二新种记述

Asthenognathinae亚科目前由一个属组成，Asthenognathus Stimpson， 1858年，还有三个种，a . inaequipes Stimpson， 1858年，a . hexonus Rathbun， 1909年（都来自印度-西太平洋），和a . atlanticus Monod， 1933年（欧洲和西热带非洲水域）。由于其体型小且与化石生物共生的生活方式，所有的软颈菊种都很难收集。对科学收藏的欧洲和西非水域的大西洋拟南蝽标本的研究表明，它们与印度-西太平洋的物种在形态和分子上存在显著差异，这使得有必要建立一个新的亚科（Schubartinae n. subf.）和两个新属。在东大西洋和地中海水域发现的唯一一种大西洋拟南鲷的身份得到澄清，并为该种建立了一个新属，Dudekemus atlanticus (Monod, 1933) n. gen., n. comb.。本研究还根据形态差异和遗传数据描述了另一个新属Schubartus n. gen.。这两个新属可以通过甲壳的比例和雄体体、表足类和内腔的结构差异与软舌龙区分开来。此外，还报道了分布于几内亚比绍和毛里塔尼亚的2个新种Schubartus mauritanicus n. gen., sp. nov.和s.n angkeeae n. gen., n. sp.。软麻麻亚科和舒麻亚科种的检索键。提供。

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来源期刊

Ecology and Evolution ECOLOGY-

CiteScore

4.40

自引率

3.80%

发文量

1027

审稿时长

3-6 weeks

期刊介绍： Ecology and Evolution is the peer reviewed journal for rapid dissemination of research in all areas of ecology, evolution and conservation science. The journal gives priority to quality research reports, theoretical or empirical, that develop our understanding of organisms and their diversity, interactions between them, and the natural environment. Ecology and Evolution gives prompt and equal consideration to papers reporting theoretical, experimental, applied and descriptive work in terrestrial and aquatic environments. The journal will consider submissions across taxa in areas including but not limited to micro and macro ecological and evolutionary processes, characteristics of and interactions between individuals, populations, communities and the environment, physiological responses to environmental change, population genetics and phylogenetics, relatedness and kin selection, life histories, systematics and taxonomy, conservation genetics, extinction, speciation, adaption, behaviour, biodiversity, species abundance, macroecology, population and ecosystem dynamics, and conservation policy.