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

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.

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

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.

Morphological ontogeny of Melanozetes meridianus(Acari, Oribatida, Ceratozetidae).

The morphological ontogeny of Melanozetes meridianus Sellnick, 1928 is redescribed and illustrated. The juveniles of this species are light brown with brown prodorsum, gastronotum, sclerites and legs, and the nymphs have a well-developed lamella. In all juveniles, a humeral organ and humeral macrosclerite are present, seta c1 is inserted on humeral macrosclerite, and setae c2 and c3 are inserted on unsclerotized integument.

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

The systematic status of Sellnick, 1928, is not clear in the literature. Therefore, the morphological ontogeny of . (C.

Morphological Ontogeny and Ecology of a Common Peatland Mite, (Acari, Oribatida, Nanhermanniidae).

Berlese, 1913, is a common and abundant oribatid species in peatlands but can be easily mistaken for . Forsslund, 1958, as an adult. Therefore, the identity of adults of .

Morphological ontogeny of Phauloppia nemoralis (Acari, Oribatida, Oribatulidae), with comments on Phauloppia Berlese.

The morphological ontogeny of Phauloppia nemoralis (Berlese, 1916) is described and illustrated. The adult of this species is most similar to Ph. incomperta (Pérez-Íñigo et Peña, 1996), but differs from it mainly by the shape of bothridial seta, porose areas Aa and A1, and location of porose area A1 and seta ad3.

Morphological ontogeny of Pilogalumna tenuiclava (Acari, Oribatida, Galumnidae) and comments on Pilogalumna Grandjean.

The morphological ontogeny of Pilogalumna tenuiclava (Berlese, 1908) is redescribed and illustrated. The prodorsal setae of juveniles are of medium size or long and barbed, and bothridial seta is fusiform, with thick, barbed head. Larva has 11 pairs of gastronotal setae, including h2, most are short and smooth, except for longer and barbed c2, c3, dp, h1 and h2.

Morphological ontogeny of Hermanniella septentrionalis (Acari, Oribatida, Hermanniellidae) and comments on Hermanniella Berlese.

The morphological ontogeny of Pilogalumna tenuiclava (Berlese, 1908) is redescribed and illustrated. The prodorsal setae of juveniles are of medium size or long and barbed, and bothridial seta is fusiform, with thick, barbed head. Larva has 11 pairs of gastronotal setae, including h2, most are short and smooth, except for longer and barbed c2, c3, dp, h1 and h2.

Morphological ontogeny of Punctoribates ghilarovi (Acari, Oribatida, Punctoribatidae).

The morphological ontogeny of Punctoribates ghilarovi Shaldybina, 1969 is described and illustrated. This species is most similar to P. mundus Shaldybina, 1973, but is larger than the latter species.

Inclusion of juvenile stages improves diversity assessment and adds to our understanding of mite ecology - A case study from mires in Norway.

Arachnid orders, Mesostigmata, Trombidiformes, and Sarcoptiformes, commonly known as 'mites', are abundant in mires, both as adults and as juveniles. However, due to the challenges of identification, the juvenile forms are often excluded from analyses. This is the first study in mires that included all three mite orders identified to the species level, including juvenile instars.

Mites (Oribatida and Mesostigmata) and vegetation as complementary bioindicators in peatlands.

Vegetation is widely used in the assessment of the quality of peatlands, while the invertebrate fauna of peatlands is relatively poorly studied. We compared the bioindicator values of vegetation with two arthropod groups widespread in peatlands, saprophagous Oribatida (Acariformes) and predatory Mesostigmata (Parasitiformes) mites. Samples were collected from ecotones at the edges of peatland ponds in Poland, including four in near-natural condition (i.

Morphological ontogeny of Punctoribates astrachanicus (Acari: Oribatida: Punctoribatidae), and comments on Punctoribates Berlese.

The morphological ontogeny of Punctoribates astrachanicus Shaldybina, 1973 is described and illustrated. This species was rarely investigated since its description, including its ecological and biological aspects. The adult has fusiform bothridial seta, straight anterior tectum of notogaster, four pairs of saccules, and notogastral setae mostly alveolar, except for short p-series.

Morphological ontogeny of Ctenobelba brevipilosa (Acari: Oribatida: Ctenobelbidae).

The morphological ontogeny of Ctenobelba brevipilosa Mahunka, 1964 is described and illustrated for the first time; this species was investigated since its description mainly in ecological aspect. The adult instar is of medium size, with setiform bothridial seta, bearing 11-17 anterior branches, and with short notogastral setae. Seta d is absent from genua I-III and all tibia.

Morphological ontogeny of Oribatella hungarica (Acari: Oribatida: Oribatellidae).

The morphological ontogeny of Oribatella hungarica Balogh, 1943 is described and illustrated. The nymphs of this species are apopheredermous, i.e.

Morphological ontogeny of Liebstadia mongolica (Acari: Oribatida: Scheloribatidae), with comments on Liebstadia Oudemans.

The morphological ontogeny of Liebstadia mongolica Bayartogtokh, 2001 is described and illustrated. The juveniles of this species are elongated and unpigmented. The larva has 12 pairs of gastronotal setae, and three of them are with excentrosclerites (c2, la, lp), the nymphs have 15 pairs, and five of them are with excentrosclerites (c2, la, lp, h2, h3).

Morphological ontogeny of Zachvatkinibates latilamellatus (Acari: Oribatida: Punctoribatidae), and comments on Zachvatkinibates Shaldybina.

The morphological ontogeny of Zachvatkinibates latilamellatus Bayartogtokh Aoki, 1998 is described and illustrated. The juveniles of this species are light brown, with several pairs of small, sclerotized depressions on the gastronotum, which are unique in Zachvatkinibates Shaldybina, 1973. The larva has 12 pairs of gastronotal setae, including h3, all are inserted on unsclerotized integument; nymphs have 15 pairs, of which c-series is inserted on individual sclerites, d-, l-, h-series and p1 are on sclerotized integument, and p2 and p3 on unsclerotized integument.

Diversity of oribatid mites (Acari: Oribatida) in the Svalbard archipelago: a historical overview.

Studies on Oribatida from Svalbard have nearly a 150-year long history. This paper reviews species diversity of Oribatida in Svalbard from a historical aspect, summarizes how often species have been found and detects erroneous reports. A list of 93 oribatid species (including Astigmata) from the Svalbard archipelago is presented.

Morphological ontogeny of Trichoribates naltschicki (Acari: Oribatida: Ceratozetidae).

The morphological ontogeny of Trichoribates naltschicki (Shaldybina, 1971) is described and illustrated, based on juvenile and adult specimens from a horse pasture in the steppe of northern Mongolia (Bulgan Province). The juveniles of T. naltschicki lack a humeral organ and a dark pigmented cuticle around the opisthonotal gland opening, which occur in some species of Trichoribatinae.

Morphological ontogeny, ecology and some biological parameters of Achipteria nitens (Acari: Oribatida: Achipteriidae).

The morphological ontogeny of Achipteria nitens (Nicolet, 1855) from Crimea peninsula is redescribed and illustrated, and ecology and some biological parameters of this species are investigated. The larva of this species has short, thick and barbed setae in and of c-series, and anterior part of prodorsum reticulate, whereas the nymphs have most gastronotal setae of medium size and barbed, except for shorter c3, and shorter, thick and smooth p2 and p3. A key to the larva and nymphs of eight species of Achipteria Berlese, 1885 is provided.

Morphological ontogeny of Minunthozetes semirufus (Acari: Oribatida: Punctoribatidae).

The morphological ontogeny of Minunthozetes semirufus (C.L. Koch, 1841) is redescribed and illustrated.

Morphological ontogeny of Achipteria punctata (Acari: Oribatida: Achipteriidae).

The morphological ontogeny of Achipteria punctata (Nicolet, 1855) is redescribed and illustrated. The adult of this species has genu IV approximately as long as tibia IV, seta bv'' on femur II is as long as seta d, with short seta l' on femur III and smooth claws of all legs. The juveniles of A.

Oribatid mite species numbers increase, densities decline and parthenogenetic species suffer during bog degradation.

This study compared the oribatid mites in two natural and four industrially exploited bogs. One natural bog (Zakręt, Z) was located in northeastern Poland and the other one (Toporowy Staw Niżni, TSN), in southern Poland. The four exploited bogs were also located in southern Poland and can be ranked from least to most degraded as follows: Łysa Puścizna (LP), Baligówka (B), Puścizna Mała (PM) and Kaczmarka (K).

Fine structure of the gnathosoma of archegozetes longisetosus [corrected] aoki (acari: oribatida, trhypochthoniidae).

Oribatida are one of the main groups of Acari comprising mostly important decomposers in soils. Most species are particle feeders, an exceptional mode of nutrition in Arachnida. Hence, their feeding organs, the gnathosoma, are of special functional interest.

The influence of cadmium on life-history parameters and gut microflora of Archegozetes longisetosus (Acari: Oribatida) under laboratory conditions.

We tested the effect of cadmium (25, 130 microg Cd g(-1)), administered via Chinese cabbage (Brassica chinensis L.) as food on life-history parameters and gut microflora of tritonymphs and adults of the oribatid mite, Archegozetes longisetosus Aoki. Both concentrations of Cd had an adverse effect on offspring mortality, and the higher concentration also reduced female fecundity, as well as the number of bacteria, fungi and actinomycetes, and it changed the community structure of bacteria; the proportion of gram-negative bacteria increased while that of gram-positive bacteria declined.

Lead-induced hsp70 and hsp60 pattern transformation and leg malformation during postembryonic development in the oribatid mite, Archegozetes longisetosus Aoki.

The study aimed at analysing the impact of high lead concentrations on the morphological integrity and the stress protein hsp70 and hsp60 levels during postembryonic development of the oribatid mite, Archegozetes longisetosus. Independent of the treatment, the recorded hsp70 levels were far higher than the hsp60 levels in all investigated stages. There was a tendency towards lower hsp70 and hsp60 levels with proceeding development (deutonymph>tritonymph>adult) in untreated animals.