Catalogue of juvenile instars of oribatid mites (Acari: Oribatida)—the next decade (2014–2023)

NORTON, ROY A.; ERMILOV, SERGEY G.

doi:10.11646/zootaxa.5419.4.1

Cited by 5 publications

(2 citation statements)

References 199 publications

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“…Quadroppia maritalis was found only in adult form, and juveniles of the entire family Quadroppiidae remain unknown [48,49]. Despite this species being considered rare [70], it was abundant in our study (in total, 739 specimens were found) and occurred across all layers.…”

Section: Discussionmentioning

confidence: 77%

“…The mite groups (Oribatida, Mesostigmata, and Prostigmata) were counted under a stereomicroscope, including both adults and juveniles. The Oribatida were further determined to species or genus level using the key for adults [32] and other publications to identify the juvenile instars [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50]. Nomenclature follows Subías [51,52] and partly Weigmann [32].…”

Section: Sampling and Identificationmentioning

confidence: 99%

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Vertical Distribution of Mites (Acari) in a “Miniature Forest” of Sphagnum Mosses in a Forest Bog in Western Norway

Seniczak,

Iturrondobeitia,

Seniczak

2024

Forests

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The Sphagnum habitat is a ”miniature forest” to the mites, of which the layers offer different microenvironmental conditions. We studied the vertical distribution of the Oribatida, Mesostigmata, and Prostigmata groups in four layers (0–5 cm, 5–10 cm, 10–15 cm, and 15–20 cm) of a forest bog on Neshalvøya, Norway, to improve the knowledge of the ecology of these mites. The sampled bog was grazed by farm animals; thus, another aim was to investigate the vertical distribution of the oribatid species, which are intermediate hosts of tapeworms. The selected study site is known for its valuable yet increasingly endangered nature, so our aim was also to contribute to the knowledge on its diversity. We collected Sphagnum samples in four replicates and extracted them in the laboratory in modified Berlese funnels. In total, 16.880 mites were studied, including 16.384 Oribatida, 466 Mesostigmata, and 30 Prostigmata. The total abundance of mites, the Oribatida and Mesostigmata groups, was the highest in the upper layer of Sphagnum and decreased with depth, while the abundance of the Prostigmata did not follow any pattern. Among the Oribatida, at deeper layers, significant declines in abundance were observed in adults, but not in juveniles. Most oribatid species, e.g., Nothrus pratensis, preferred the upper layer of Sphagnum, whereas some preferred deeper layers. For example, Suctobelbella acutidens and Carabodes femoralis preferred the 5–10 cm layer, Quadroppia maritalis the 10–15 cm layer, and Ceratozetes gracilis and Eulohmannia ribagai preferred the deepest layer of Sphagnum. Adults and juveniles of the same species showed a preference for the same layer. In total, 62 species of the Oribatida were recorded, including 11 species that are known to be intermediate hosts of tapeworms. Most of them occurred in the upper layer of Sphagnum. Over 20% of the species were found exclusively in deeper layers, so sampling these layers is important for a better evaluation of the mites’ diversity. Studying the vertical distribution of the mites in bogs helps us to understand their ecology, including their role as intermediate hosts of tapeworms, as well as their diversity.

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Section: Discussionmentioning

confidence: 77%

Section: Sampling and Identificationmentioning

confidence: 99%

Vertical Distribution of Mites (Acari) in a “Miniature Forest” of Sphagnum Mosses in a Forest Bog in Western Norway

Seniczak,

Iturrondobeitia,

Seniczak

2024

Forests

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Morphological ontogeny of Oribatula pannonica (Acari, Oribatida, Oribatulidae), and comments on some species of Oribatula Berlese

SENICZAK,

IVAN,

SENICZAK

2024

Zootaxa

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The morphological ontogeny of Oribatula pannonica Willmann, 1949 is described and illustrated. Most prodorsal setae of juveniles are of medium size, and bothridial seta is clavate. The larva has 11 pairs of gastronotal setae, including h2, most are of medium size and barbed, nymphs have 13 pairs (p3 absent), of which most are short and smooth. Basal excentrosclerites are present at nine pairs of gastronotal setae (c1, c2, d-, l-series, h1) in the larva, and at 12 pairs (c1, c2, d-, l-, h-series, p1) in the nymphs. The morphology of adult O. pannonica is compared with congeners with 13 pairs or an unknown number of notogastral setae.

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Morphological ontogeny of Conoppia palmicincta (Acari, Oribatida, Cepheusidae)

SENICZAK,

SENICZAK

2024

Zootaxa

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The morphological ontogeny of Conoppia palmicincta (Michael, 1880) is described and illustrated. The adult of this species is poorly known, but the tritonymph is relatively well known as one of the most beautiful oribatid mites. The juveniles of this species are light brown, roundish and flattened. Most prodorsal setae of the juveniles are setiform (short ro, le and ex; long bs), except for phylliform and reticulate in. The larva has 11 pairs of gastronotal setae, including h2, the nymphs have 12 pairs (h3 and p-series are added, and d-series is lost). Most gastronotal setae of juveniles are wide, phylliform, reticulate and occupy the marginal parts of gastronotum, except for five setiform setae in the larva (very long c3 and h1, medium sized h2 and short da and dm), and four setiform setae in the nymphs (very long c3 and h2, long p2 and shorter p3). The nymphs are eupheredermous, i.e. they lose their dorsal seta of d-series and carry the exuvial scalps of previous instars on the gastronotum. Most leg setae of juveniles are setiform, except for three wide, phylliform setae on leg I of larva (l on genu and l’ on tibia), from which l’’ on genu is reticulate, while l’ on genu and tibia has longitudinal lines. Relatively long are seta l’’ on tibia I of larva, and l’’ on tibia I and II of the nymphs. Seta d accompanies solenidion σ on genua I–III and φ on tibiae II–IV.

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Catalogue of juvenile instars of oribatid mites (Acari: Oribatida)—the next decade (2014–2023)

Cited by 5 publications

References 199 publications

Vertical Distribution of Mites (Acari) in a “Miniature Forest” of Sphagnum Mosses in a Forest Bog in Western Norway

Vertical Distribution of Mites (Acari) in a “Miniature Forest” of Sphagnum Mosses in a Forest Bog in Western Norway

Morphological ontogeny of Oribatula pannonica (Acari, Oribatida, Oribatulidae), and comments on some species of Oribatula Berlese

Morphological ontogeny of Conoppia palmicincta (Acari, Oribatida, Cepheusidae)

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