Taxonomy of the Proisotoma complex. VI. Mobile forms of Proisotoma s.str. with the description of a new species from East Siberia (Collembola: Isotomidae)

Potapov, Mikhail; Bogomolov, M. N.

doi:10.11646/zootaxa.4088.2.7

Cited by 3 publications

(2 citation statements)

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“…Difficulty arises in deciding “which” morphological traits equate to species, and a wide range of diagnostic morphological characters (chaetotaxy, mouthpart) has been suggested and has greatly improved the taxonomy in many collembolan groups (e.g., Deharveng, ). Further, complicating these decisions is dimorphism phenomena, referred to as ecomorphosis, cyclomorphosis, epitoky, mobile forms and sexual differentiation, and is often discovered within species (Cassagnau & Lauga‐Reyrel, ; Fjellberg, ; Mari‐Mutt, ; Potapov & Bogomolov, ; Skarżyński, , ; Stevens & D'Haese, ). More commonly, many supposed independent species are difficult to separate owing to their conservative or controversial morphology, for example, problematic taxa in Lepidocyrtinae, Tomoceridae, Pseudachorutinae (Deharveng, ) and some based on colour patterns (Jordana & Baquero, ; Yoshii & Suhardjono, ).…”

Section: Introductionmentioning

confidence: 99%

Species delimitation in the morphologically conserved Coecobrya (Collembola: Entomobryidae): A case study integrating morphology and molecular traits to advance current taxonomy

et al. 2018

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Traditional species delimitation only based on morphological diagnostics does not fully meet the needs of modern taxonomy. Cryptic diversity revealed by molecular evidence has been increasingly discovered in many groups; however, subsequent species description is often lacking because of inadequate taxonomy and being devoid of operational criteria. In this study, we focus on the collembolan Coecobrya which has been suspected to be a species complex living on cave guanos. Our study aimed to integrate both morphological and molecular character traits to explore this group across geographically separated cave populations. Among seven sampled populations, only minor chaetotaxic differences were detected, and between populations, there was partial overlap of discriminating characters. However, using three genes (COI, 16S and 28S), we consistently recovered across distance‐ and evolutionary model‐based molecular delimitations seven molecular lineages, corresponding to seven candidate morphospecies. A final seven‐species hypothesis was validated and seven new species were described: Coecobrya phanthuratensis sp. n., Coecobrya ranongica sp. n., Coecobrya donyoa sp. n., Coecobrya khaopaela sp. n., Coecobrya specusincola sp. n., Coecobrya khromwanaramica sp. n. and Coecobrya promdami sp. n. A tentative taxonomic workflow integrating multiple lines of evidence is proposed to facilitate the subsequent formal species description for Collembola. Unified species concept is preferable to accommodate most species concepts, delimitation criteria and data analysis methods. In practice, DNA‐based diagnoses are recommended as the standard component for the current taxonomy of Collembola, particularly within morphologically conserved groups.

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Section: Introductionmentioning

confidence: 99%

Species delimitation in the morphologically conserved Coecobrya (Collembola: Entomobryidae): A case study integrating morphology and molecular traits to advance current taxonomy

et al. 2018

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“…veca (Wray, 1952), and Cliforga aleghaniensis (Wray, 1952). The published data on other 'ecomorphic species' of the family Isotomidae were summarized by Najt (1983). Four types of ecomorphic modifications were proposed to classify all known cases, based on morphological structures affected by ecomorphosis.…”

Section: Introductionmentioning

confidence: 99%

Folsomia najtaen. sp. (Collembola: Isotomidae) — a new species with ‘mobile’ forms from the Far East of Russia

Potapov

Fjellberg²,

Bokova

2017

Zoosystema

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Folsomia najtae n. sp. is described from the southern part of Sikhote-Alin Range (Far East, Russia). It is characterized by 6 + 6 ommatidia, a full set of ms-chaetae on body tergites, long accp3 s-chaetae on the fifth abdominal segment, four posterior chaetae on dens, and dimorphism of juvenile specimens. The properties that define the 'mobile' form are protruding cornea of ommatidia and tuberous long dens. The closely related species F. orientalis Martynova, 1977 and F. setula Christiansen & Tucker, 1977 are redescribed basing on the material from North-East of Asia and East of North America, respectively. RÉSUMÉ Folsomia najtae n. sp. (Collembola: Isotomidae) -une nouvelle espèce avec des formes « mobiles » originaire de l'Extrême Orient russe. Folsomia najtae n. sp. est décrite de la partie méridionale de la chaîne des Sikhote-Alin (Extrême Orient, Russie). Elle est caractérisée par 6 + 6 ommatidies, un jeu complet de ms-chaetae sur les tergites du corps, de longues soies s accp3 sur le cinquième segment abdominal, quatre soies postérieures sur la dens, et un dimorphisme chez les juvéniles. Les caractères qui définissent les formes « mobiles » sont la cornée saillante des ommatidies et la forme en tube allongé de la dens. Les espèces proches F. orientalis Martynova, 1977 et F. setula Christiansen & Tucker, 1977 sont redécrites sur du matériel originaire d'Asie du Nord-Est et de l'Est de l'Amérique du Nord, respectivement.

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Molecular phylogeny and trait evolution in an ancient terrestrial arthropod lineage: Systematic revision and implications for ecological divergence (Collembola, Tomocerinae)

Deharveng

Lukić

et al. 2021

Molecular Phylogenetics and Evolution

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Taxonomy of the Proisotoma complex. VI. Mobile forms of Proisotoma s.str. with the description of a new species from East Siberia (Collembola: Isotomidae)

Cited by 3 publications

References 1 publication

Species delimitation in the morphologically conserved Coecobrya (Collembola: Entomobryidae): A case study integrating morphology and molecular traits to advance current taxonomy

Species delimitation in the morphologically conserved Coecobrya (Collembola: Entomobryidae): A case study integrating morphology and molecular traits to advance current taxonomy

Folsomia najtaen. sp. (Collembola: Isotomidae) — a new species with ‘mobile’ forms from the Far East of Russia

Molecular phylogeny and trait evolution in an ancient terrestrial arthropod lineage: Systematic revision and implications for ecological divergence (Collembola, Tomocerinae)

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