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The Ologamasidae Ryke belong to the super-family Rhodacaroidea Krantz & Ainscough. This group further includes four families: Rhodacaridae Oudemans, Sessiluncidae Lee, Gamasiphidae Lee and Laelaptonyssidae Womersley. The Ologamasidae are divided into 4 groups of genera based on synapomorphies: 1. Ologamasus -group, 2. Gamasellus -group, 3. Cyrtolaelaps -group, 4. Cymiphis -group. Here, we analyse the distribution of genera of these four groups and relate it to events in geological history. The origin of the majority of these genera is linked to the separation and splitting of the Gondwanian super-continent at the end of the Jurassic, 135 million years ago. Further, we determine the position of the Rhodacaroidea within the Parasitiformes Reuter, 1909. Previous comprehensive investigations by Hennig applying phylogenetic methods are supplemented by comparing the chaetotaxy of legs and characteristics developed by phoretic behavioural patterns. The results show that the Ixodides are related to the Uropodina, particularly very closely to the Uropodoidea. Hence, the Ixodides must be integrated into the subgroups of Parasitiformes. The Parasitiformes comprise three distinguished main groups: 1. Gamasina Leach, 2. Margotrichina Karg & Schorlemmer and 3. Antennophorina Berlese s. Karg & Schorlemmer, 2008. Classifications are explained by means of cladograms and synapomorphies. Lastly, we describe and illustrate four new species from South America (Venezuela and Ecuador). These new species belong to the Ologamasus genera-group, genus Neogamasellevans Loots & Ryke and genus Geogamasus Lee and to the Gamasellus genera-group, genus Desectophis Karg. Differential diagnoses of new and related species are completed by keys for 32 species of Geogamasus Lee, Desectophis Karg and Acuphis Karg. Acuphis eulateris Karg, 1998 is transferred to the genus Desectophis Karg. (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

International audience; The present study has been initiated by new species from South America and the deviating classification of sub-groups by several authors. We assume a division of the Parasitiformes into three main groups: 1. Antennophorina Berlese, 1892 s. lat., 2. Margotrichina Karg et Schorlemmer, 2008, 3. Gamasina Leach, 1815. Here, we analyse these groups step by step. Cladograms that are based on autapomorphies and synapomorphies visualize relationships between subgroups. 1. The Antennophorina are divided into the Sejides Berlese and the Trigynaspida Camin et Gorirossi including the Celaenopsoidea Berlese, Cercomegistoidea Trägårdh Fedrizzioidea Trägårdh, Megisthanoidea Berlese and Trigynaspidoidea Camin et Gorirossi. Two new species belong to the Cercomegistoidea and the Fedrizzioidea. A new genus of the Fedrizziidae is erected: Holostethus n. gen. 2. Larval-systematic investigations and comparisons of the chaetotaxy of extremities lead to two novel findings. First, the group of the Microgyniina belongs to the Margotrichina. Second, the Thinozerconina have to be separated from the Uropodina group. Hence, the Margotrichina now comprise the four subgroups Microgyniina, Thinozerconina, Uropodina and Ixodides. 3. The state of art regarding the Gamasina is briefly outlined. We describe two new species of Gamasiphoides - family Gamasiphidae and generate a key for new and known species of the genus.

Eleven species are newly reported for the Finnish fauna of Phytoseiidae. Of these, the following three new species are described: Amblyseius (Pauciseius) valsoensis n. sp., Amblyseius (Amblyseius) tavasticus n. sp. and Proprioseiopsis (Amblyseiulus) savonicus n. sp. Subgroups in the genera Amblyseius, Proprioseiopsis and Typhlodromus are reviewed and keys for the identification of these species are presented.

The present study is a continuation of previous acarological investigations of tropical rainforests in the course of the International Biological UNESCO Program. In total, 28 new species from Chile, Paraguay, Brazil, Venezuela, Ecuador and Cuba are described and documented. Distribution and taxonomy of studied groups are explained. Keys are provided for known and new species, in total for 106 species. Based on an autapomorphy of the sperm, Ribbon sperm, the Eugamasides and Eviphidides are combined and a new taxon is erect naming Ribbondides n. subcohors. The following 12 groups are investigated: Evimirus Karg, 1963; Parholaspis Berlese, 1918; Africoseius Krantz, 1962; Afrogamasellus Loots & Ryke, 1968 – subgen. Foliogamasellus Karg, 1977; Poropodalius Karg, 2000; Dendrolaelaspis Lindquist, 1975; Rykellus Lee, 1970; Neogamasellevans Loots & Ryke, 1967; Ologamasus Berles, 1888; Hydrogamasellus Hirschmann, 1966; Parasitus Latreille, 1795 – subgen. Bacuterus Karg, 1998; Zygoseius Berlese, 1916. The Podocinidae Berlese, 1916 are revised and 9 groups categorized. Concerning their distribution it is conspicuous that taxa regarded as endemic African groups occur in South America: Africoseius Krantz, 1962, Afrogamasellus Loots & Ryke, 1968 and Rykellus Lee, 1970. Dominant are the Rhodacaroidea Oudemans, 1903. Several subgroups of this group are limited to the Neotropic where they occupy ecological niches which are held by other predatory mite groups, especially by the Parasitidae Oudemans, 1901, in the Holarctic. However, in high altitudes of 2900 to 4200 m above sea level (a.s.l.), Parasitidae were detected. Some groups are distributed worldwide: Pachylaelaps Berlese, 1886, Hypoaspis Canestrini, 1885, Ameroseius Berlese, 1904, Lasioseius Berlese, 1916 and Multidentorhodacarus Shcherbak, 1980. The distribution is analysed by means of the Historical Zoogeographic Method, revealing connections to past geological events. It leads to the following conclusion: Ancestral groups that are distributed worldwide (Hypoaspis, Pachylaelaps, Ameroseius, Lasioseius, Multidentorhodacarus) already existed in the Permian and the Triassic before Pangaea started splitting into today´s continents. Specialized forms with particular pattern of distribution developed at the end of the Jurassic (Africoseius, Rykellus, Afrogamasellus) and during the Cretaceous (Neogamasellevans, Ologamasus, Hydrogamasellus and Parasitus) (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

From a grassland-soil and from a forest-soil with deciduous trees in Central Europe two novae species and from Northern Europe one nova subspecies of the genus Typhlodromus Scheuten, 1857 are described and documented by figures. The differential features are integrated into a key for the known species and subspecies of the Typhlodromus pyri-group. The scientific terms for organo-parts of the spermatheca of the females in the Phytoseiidae Berlese are revised.

To the knowledge of the Eugamasides Karg with new species from the rain-forests of Ecuador (Acarina, Parasitiformes) From Ecuador 25 new species are described and documented by differential diagnoses and keys for identification and by figures. One new genus and one new subgenus are established. The zoogeography and the origin of the Eugamasides in the Cretaceous period is discussed. A cladogram is provided. The Parasitoidea are a specialized branch arised from the Rhodacaroidea forming together the subcohors Eugamasides.

Aus den Familien Hypoaspididae Vitzsthum, Phytoseiidae Berlese, Gamasiphidae Lee, Parasitidae Oudemans und Rhodacari-dae Oudemans werden 18 novae species beschrieben. Ein novum genus der Gamasiphidae wird aufgestellt. Es wird die Evolution der Merkmale Spermatodactylos, Inseminationssystem, Hypostom und Chaetotaxie der Extremitaten kritisch untersucht. Apomorphe Merkmalsstufen entstanden oft konvergent. Die Familien Rhodacaridae und Parasitidae sind durch einen Bulbodactylos charakterisiert, der entweder distal frei bleibt oder sich mit dem Digitus mobilis verbindet. Predatory mite species from the tropical rain forest of Ecuador with a critical survey of character evolution in Gamasina (Acarina, Parasitiformes). The evolution of the characters spermatodactylos, insemination system, hypostom, and chaetotaxy of the legs is critically surveyed. Simnilar character states often evolved independently, however, microstructures are proven synapomorphies of genera and families. In addition to other characters the families Rhodacaridae and Parasitidae are characterized by a bulbodactylos that either remains free distally or fuses with the digitus mobilis. Monophyly of these two groups is thus supported.

Die Hypoaspididae werden in die Subfam. Hypoaspidinae s. str. und Pseudoparasitinae geteilt. Fur die Pseudoparasitinae ist eine ausgedehnte, ventrale Sklerotisierung charakteristisch. Sie erreicht ein Maximum im Genus Oloopticus Karg, 1978. Das Muster der Diagnosemerkmale fur die Rhodacaridae wird analysiert. Es werden 25 Genera untersucht. Die Merkmale sind in den Gattungen unterschiedlich manifestiert. Es werden 3 neue Genera der Rhodacaridae aufgestellt. Insgesamt werden aus beiden Familien 21 neue Arten beschrieben und durch Differentialdiagnosen und Abbildungen belegt. Die Zoogeographie einiger Gattungen wird im Zusammenhang mit palaogeographischen Ereignissen diskutiert. The systematic of the predatory mite families Hypoaspididae v. Vitzthum, 1941 and Rhodacaridae Oudemans, 1902 (Acarina, Parasitiformes) with new species from South- and Central America. The Hypoaspididae are divided into the subfam. Hypoaspidinae s. str. and Pseudoparasitinae. The Pseudoparasitinae are characterised by a lerger ventral sclerotisation with a maximum in the genus Oloopticus Karg, 1978. The pattern of diagnostic features of the Rhodacaridae is analysed. 25 genera are investigated. The characteristics are differently manifested in the genera. Three new genera of Rhodacaridae are established. Concerning both families 21 new species are described and documented by differential diagnoses and by figures. The zoogeography of some genera is discussed in connection with palaeogeographical events.

Out of nests of termites of Nasutitermes spec. from Cuba two new species of predatory mites of the subgenus Cosmolaelaps Berlese (genus Hypoaspis Can.) are described and documented by figures and differentialdiagnoses.

Material of mites of the family Phytoseiidae BERLESE gathered from different trees and shrubs in Norway is investigated. 21 species are distinguished, including 5 new species belonging to the genera SeiulusBERLESE, AnthoseiusDE LEON, TyphlodromusSCHEUTEN and AmblyseiusBERLESE. The species are described and documented by figures and differential diagnosis.

Several species of the genus Proctolaelaps Berl. infest cultures of different species of Drosophila Fall. When mite infestations increase population of flies crash. A new species of Proctolaelaps was found in a Drosophila culture at the University of Leeds. The new species is described and documented by differential features and figures.

From animal material collected in soil-biological investigations 3 new species of mites of the family Tydeidae are described and documented by figures and differential-diagnosis. They belong to the genera Tydeus Koch and Coccotydaeolus Baker.

From Central Europe and Central America 3 new species are described and documented by figures and by differentialdiagnoses. The species belong to the subgenera Amblyseius s. str. and Neoseiulus Hughes, 1948. A key is given for the 7 subgenera of the genus Amblyseius Berlese.

Two new predatory mite species of the Parasitinae OUDEMANS out of greenhouse-soils (Acarina, Parasitiformes) Out of greenhouse-soils two new predatory mite species are described and documented by differentialdiagnoses and figures. The species belong to the genera Anadenosternum Athias-Henriot and Neogamasus Tichomirov.

The female of Chelaseius arnei n. sp. collected from weeds in France is described and illustrated. A key is provided for the known species of Chelaseius . (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Lasioseiusbarbensiensis n. sp., a new species collected from an apple orchard in Barbens, Spain is described and illustrated. This is also the first report of a species belonging to the subgenus Borinquolaelaps Fox from Europe. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

This study critically reviews the classification of Parasitiformes, especially of Gamasina. Results indicate that the establishment of the following groups of Parasitiformes is based on plesiomorphic characters which renders the grouping invalid: Anactinochitinosi Grandjean, 1935, Monogynaspida Camin et Gorirossi, 1955, Trichopygidina Hirschmann, 1975 and, within the Gamasina: Dermanyssides (Dermanyssina) Evans et Till, 1978, Epicriides Evans et Till, 1978 and Ascidae Oudemans sensu Lindquist et Evans, 1965. Several taxa of the Ascidae sensu Lindquist et Evans belong to other taxa: Proctolaelaps Berlese and Melichares Hering to the Ameroseiidae Evans, Antennoseius Berlese to the Halolaelapidae Karg, Protogamasellus Karg to the Rhodacaridae Oudemans, Neojordensia Evans and Lasioseius Berlese to the Podocinidae Berlese and Blattisocius Keegan to the Phytoseiidae Berlese. The systematic of Gamasina is revised and a cladogram of 25 families is drawn. The taxon Gamasina is divided into three taxa: Eviphidides, Eugamasides and Ascides. The cladogram reveals that the Ascides first split off and that Eugamasides and Eviphidides have a common root. Further, 18 new species from Ecuador are described and illustrated. Differential diagnoses of new and related species are completed by keys. A total of 15 keys is provided for the taxa Gamasholaspis Berlese, Oloopticus Karg, Platyseius Berlese, Acuphis Karg, Gamasolaelaps Berlese, Proctofissus Karg, Hypoaspis Canestrini, Amblyseius Berlese, Proctolaelaps Berlese, Cheiroseius Berlese, Asca v. Heyden and Parasitus Latreille.

A new species belonging to the genus Typhloromips De Leon, 1965 is described. It was collected from Calluna moorland soil on Jurmo, a remote island in the SW archipelago of Finland. Typhlodromips herbarius (Wainstein, 1960) is considered a senior synonym of T.tenuis (Westerboer, 1963), syn.n. A key is given to related species with a similar spermathecal structure. peerReviewed

To the Knowledge of the Predatory Mite-Cohort Gamasina LEACH (Acarina, Parasitiformes) of Tropical and Subtropical Regions Preliminary the importance of the predatroy mites is outlined. From Chile and from New Caledonia 15 new species are described and documented by figures. Differentialdiagnoses are given most as keys for determination. 12 of the new species belong to the family Rhodacaridae OUDEMANS, 2 new species belong to the Hypoaspididae v. VITZTHUM and one new species to the Veigaiidae OUDEMANS.

New Predatory Mite Species of the Antennophorina BERLESE, 1892 (A carina, Parasitiformes), Phoretic on Passalid Beetles From southern hemisphere of the earth 6 new species are ascertained belonging to the following families of the Antennophorina: Megisthanidae, Fedrizziidae, Diplogyniidae and Schizogyniidae. The new species are described and documented by figures and differential diagnosis.

Predatory Mites of the Cohors Gamasina Leach (Acarina, Parasitiformes) in the Galapagos Archipelago In a third study 30 new predatory mite species of the Galapagos islands are described and documented by differential diagnoses and figures. The genus Protogamasellopsis EVANS & PURVIS is revised. The predatory mites investigated from Galapagos belong to 22 genera of the cohors Gamasina. All are known from different continents. Out of genera with numerous species several representatives evidently reached the archipelago. Beginnings of an adaptive radiation are recognizable.

Predatory Mites of the Ascidae, Ameroseiidae, Rhodacaridae and Macrochelidae in the Galapagos Archipelago (Acarina, Parasitiformes) In this second study of the predatory mites of the Galapagos Islands 4 further families are investigated. They are represented by 10 genera. 13 novae species are described and documented by differential diagnoses and figures. The nearest related sister species of the novae species are predominantly known from Central and South America. The morphological-functional alteration let assume advantages of selection.

Predatory Mites of the Hypoaspididae, Laelapidae and Phytoseiidae in the Galapagos Archipelago (Acarina, Parasitiformes) For the first time the predatory mites (cohors Gamasina) of the Galapagos islands are investigated. The presented publication, concerning 3 families, is a first contribution of a series of investigations. The 3 families are only represented by 5 genera. Comparing the mouthparts of the Hypoaspididae it becomes clear that in Galapagos predatory mites of few genera have to control very different prey. 19 out of 21 ascertained species are novae species. They are described and documented by differential diagnoses and figures.

Two new species of the genus Androlaelaps, extremitatis and ziegleri, were found on a cockroach of the genus Princisia in Madagascar. These are described and illustrated. A key for the species found on the cockroaches is given. The genus Gromphadorholaelaps Till 1969 is synonymised with Androlaelaps.

Faraji, Farid, Sakenin-Chelav, Hamid, Karg, Wolfgang (2006): A new species of Dendroseius Karg from Iran (Acari: Rhodacaridae), with a key to the known species. Zootaxa 1221: 63-68, DOI: 10.5281/zenodo.172559

In abandoned cocoons of spiders in caves near Vienna a new species of the genus Amblyseius BERLESE, 1904 was detected: Amblyseius caviphilus n. sp. The species is described and documented by figures and by a differentialdiagnose. In verlassenen Spinnenkokons in Hohlen bei Wien wurde eine neue Milbenart der Gattung Amblyseius BERLESE, 1904 gefunden: Amblyseius caviphilus n. sp. Die Art wird beschrieben und durch Abbildungen und durch eine Differentialdiagnose belegt.

The subgenus Cosmolaelaps BERLESE of Hypoaspis CANESTRINI is revised. Keys for determination of the females of 40 species are arranged. 9 new species are described and documented by figures. The subgenus is divided into 3 species-complexes.

From Central America 5 new species of the genus Hypoaspis Canestrini are described and documented by figures. The differential-features are arranged into keys for determination of species-groups of subgenera.

In Europe, mites of the genus Gamasiphis Berlese, 1904 occur in agricultural soils of glass-houses. The species are living free only in tropical and subtropical climates. Twenty species are registered. A key is arranged for 16 species, for 4 species till now described inexactly short diagnoses are given. A new species, Gamasiphis lanceolatus n.sp., is described from a glass-house near Rostock. This species is documented by figures and differentialdiagnosis.

On the Predatory Mite Genus Andregamasus Costa of the Podocinidae Berlese (Cohors Gamasina Leach: Acarina, Parasitiformes), Associated With Nematodes and Hermit Crabs Mites collected on the Philippines in shells of hermit crabs have been determined as Andregamasus conchylicola (ANDRE). Female, male and deuto-nymph are described. The genus Andregamasus COSTA is investigated taxonomically and included in the family Podocinidae BERLESE. Keys are given for the species of the genus Andregamasus and for the genera of the Podocinidae.