Delimiting species of water mites of the genus Hydrodroma (Acari: Hydrachnidiae: Hydrodromidae) from North America and Europe: Integrative evidence of species status from COI sequences and morphology

Więcek, Mariusz; Szydło, Wiktoria; Dabert, Jacek; Proctor, H. C.

doi:10.1016/j.jcz.2019.11.004

Cited by 6 publications

(4 citation statements)

References 19 publications

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“…Our ABGD analysis identified barcode gap between 3-7%, which is lower than threshold obtained for springdwelling water mite species by Blattner et al (2019) (6-9%). Interspecific COI barcode distances for congeneric water mite species have most often been estimated as greater than 10% Więcek et al 2020;Montes-Ortiz et al 2022), and correspond to the values obtained in this study. However, it is noteworthy that among very closely related species of Atractides and Torrenticola interspecific K2P distances had values of about 6% and 4%, respectively (Pešić et al 2020a;Pešić et al 2020b).…”

Section: Discussionsupporting

confidence: 86%

Species boundaries among extremely diverse and sexually dimorphic Arrenurus water mites (Acariformes: Hydrachnidia: Arrenuridae)

Więcek

Broda

Proctor

et al. 2023

saa

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Arrenurus (Arrenuridae) is the most species-rich genus of mites with about 1000 named species that inhabit standing, and to a lesser extent, running water habitats around the world. To date, distinguishing species of Arrenurus has been based on male reproductive morphology. Here, we use morphological and molecular approaches to examine species boundaries among 42 named species of Arrenurus, including four named species that have colour variants (red and green A. americanus, and red and blue A. intermedius, A. manubriator and A. apetiolatus), and two unnamed morphospecies. In this study, we examine male genital structures with the use of SEM techniques, and apply mitochondrial (COI barcode region) and nuclear (28S rRNA) gene fragments to test whether male morphology reflects species boundaries in Arrenurus assessed by molecular analyses. Our results reveal that male reproductive morphology parallels species boundaries as judged by molecular data. We discuss the cases of genetically poorly diversified, yet morphologically clearly defined named species. Moreover, we show that based on the species we examined, colour morphs within otherwise morphologically similar specimens represent within-species variation and, in the absence of other diagnostic traits, colour itself can be misleading in distinguishing species. Our outcomes on molecular taxonomy of Arrenurus provide a background for testing hypotheses about speciation rate in water mites.

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Section: Discussionsupporting

confidence: 86%

Species boundaries among extremely diverse and sexually dimorphic Arrenurus water mites (Acariformes: Hydrachnidia: Arrenuridae)

Więcek

Broda

Proctor

et al. 2023

saa

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“…The ABGD analysis identified barcode gap between 3-7%, which is lower than threshold obtained for spring-dwelling water mites by Blattner et al (2019) (6-9%). Interspecific COI barcode distances have been estimated for congeneric vs. congeneric water mite species most frequently for > 10% (Pešić & Smit, 2017; Pešić et al, 2017; Więcek et al, 2020), and correspond to the values obtained in this study. However, noteworthy, among closely related Atractides species distances had values of about 5% (Pešić et al, 2020).…”

Section: Discussionsupporting

confidence: 77%

Species boundaries among extremely diverse and sexually dimorphicArrenuruswater mites (Acariformes: Hydrachnidiae: Arrenuridae)

Więcek

Broda

Proctor

et al. 2021

Preprint

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Arrenurus (Arrenuridae) is the most species-rich genus of mites with about 950 named species that inhabit standing, and to a lesser extent, running water habitats around the world. To date, distinguishing species of Arrenurus has been based on male reproductive morphology. Here, we use morphological and molecular approaches to examine species boundaries among 42 named species of Arrenurus, including four named species that have colour variants (red and green A. americanus, and red and blue A. intermedius, A. manubriator and A. apetiolatus), and two unnamed morphospecies. In this study, we examine male genital structures with the use of SEM techniques, and apply mitochondrial (COI barcode region) and nuclear (28S rRNA) gene fragments to test whether male morphology reflects species boundaries in Arrenurus assessed by molecular analyses. Our results reveal that male reproductive morphology parallels species boundaries as judged by molecular data. We discuss the cases of genetically poorly diversified, yet morphologically clearly defined named species. Moreover, we show that based on the species we examined, colour morphs within otherwise morphologically similar specimens represent within-species variation and, in the absence of other diagnostic traits, colour itself can be misleading in distinguishing species. Our outcomes on molecular taxonomy of Arrenurus provide a background for testing hypotheses about speciation rate in water mites.

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“…Barcoding based on the mitochondrial gene encoding the enzyme cytochrome b oxidase (COI) has been widely used for identifying species [21], and barcoding has been proven useful to confirm the taxonomy based on morphology. There are examples of COI use for most of the arachnid taxa (e.g., Ricinulei [22], Acarina [23], Pseudoscorpionida [24], Opiliones [25], Araneae [26]), and combined with morphological characteristics (i.e., integrative taxonomy), it has become an invaluable tool for diversity assessment and to solve taxonomic inconsistencies [27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

More Than 200 Years Later: Gluvia brunnea sp. nov. (Solifugae, Daesiidae), a Second Species of Camel Spider from the Iberian Peninsula

Pertegal,

Barranco,

De Mas

et al. 2024

Insects

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We present the description of a new species of Solifugae from the Iberian Peninsula, Gluvia brunnea sp. nov., which has been found so far in southeast Spain. The morphological description is accompanied by molecular and multiple factor analyses, jointly giving full support to the specific status of the taxon. Finally, we discuss the intraspecific variability of both species, G. dorsalis and G. brunnea sp. nov., and the recent history of the genus. We also discuss the usefulness of multiple factor analysis for quantitatively separating species, and we stress that some specimens of this new species were found in Mesovoid Shallow Substratum stations, representing the very first time that Solifugae have been captured in this type of trap.

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Delimiting species of water mites of the genus Hydrodroma (Acari: Hydrachnidiae: Hydrodromidae) from North America and Europe: Integrative evidence of species status from COI sequences and morphology

Cited by 6 publications

References 19 publications

Species boundaries among extremely diverse and sexually dimorphic Arrenurus water mites (Acariformes: Hydrachnidia: Arrenuridae)

Species boundaries among extremely diverse and sexually dimorphic Arrenurus water mites (Acariformes: Hydrachnidia: Arrenuridae)

Species boundaries among extremely diverse and sexually dimorphicArrenuruswater mites (Acariformes: Hydrachnidiae: Arrenuridae)

More Than 200 Years Later: Gluvia brunnea sp. nov. (Solifugae, Daesiidae), a Second Species of Camel Spider from the Iberian Peninsula

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