Morphological Ontogeny, Ecology, and Biogeography of Fuscozetes fuscipes (Acari, Oribatida, Ceratozetidae)

The systematic status of Sellnick, 1928, is not clear in the literature. Therefore, the morphological ontogeny of . (C.L. Koch, 1844), the type species of this genus, was investigated and compared with its congeners in this study, and a new diagnosis of is given. The juveniles of . are light brown,...

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Bibliographic Details
Published inAnimals (Basel) Vol. 14; no. 4; p. 538
Main Authors Seniczak, Stanisław, Seniczak, Anna, Jordal, Bjarte H
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 06.02.2024
Subjects
DNA barcoding
Electron microscopes
Investigations
juveniles
leg setation
Morphology
Museums
oribatid mites
Scanning electron microscopy
Sphaerozetinae
stage structure
Canada
Norway
oribatid mites
juveniles
stage structure
DNA barcoding
leg setation
Sphaerozetinae
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Summary:The systematic status of Sellnick, 1928, is not clear in the literature. Therefore, the morphological ontogeny of . (C.L. Koch, 1844), the type species of this genus, was investigated and compared with its congeners in this study, and a new diagnosis of is given. The juveniles of . are light brown, with a brown prodorsum, sclerites, epimeres, and legs. In all juveniles, a humeral organ and a humeral macrosclerite are present. The gastronotum of the larva has 12 pairs of setae ( is present), whereas the nymphs have 15 pairs. In the larva, the gastronotal shield is weakly developed, and most gastronotal setae are short except for a slightly longer . Most of the gastronotal setae are inserted on the microsclerites except for , and several other macrosclerites and many microsclerites are present on the hysterosoma. In the nymphs, the gastronotal shield is well developed, with 10 pairs of setae ( -, -, and -series, and ), and setae and are located on a large posteroventral macrosclerite. In all the instars, femora I and II are oval in cross-section, without a large ventral carina. Mitochondrial COI sequence data revealed a deep split between the Nearctic and Palearctic populations of . , and a less, but significant, divergence within each continent. These strong geographical barriers were contrasted with multiple cases of shared haplotypes over long distances in the Palearctic, indicating high migration rates in modern times.
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ISSN:2076-2615
2076-2615
DOI:10.3390/ani14040538