The shore-dwelling Acari of the Isles of Scilly and the South-West Peninsula

Seventy-five species of Acari were collected from the littoral and supralittoral zones on a number of shores in the Isles of Scilly, Cornwall, South Devon and Dorset. Many of the species recorded are new records, or at least new shore records to the area. Vulgarogamasus halophilus (Willmann) (Parasitidae) is new to the British fauna.     

The homology of glands and glandularia in the water mites (Acari: Hydrachnidia)

Homologies of the glandularia in the water mites (Acari: Prostigmata: Parasitengona: Hydrachnidia) are discussed. The fundamental 18 pairs of glandularia (sensu Bader, 1982) were never found, epimeroglandularia E1 and E3 being universally absent. E4 was shown to be highly variable in position. Homologies of glandularia are suggested for some major water mite taxa.     

Mites of the family Zerconidae Canestrini, 1891 (Acari: Parasitiformes) from the British Isles,with descriptions of two new species

The species of Zerconidae recorded for the British Isles are reviewed and keys and distributional details for the genera Parazercon, Prozercon and Zercon are given. Prozercon cambriensis sp. nov. and Zercon hemimbricatus sp. nov. are described.     

Three new species of Cecidophyinae (Acari: Eriophyidae) from China

Three new eriophyoid mite species (Acari: Eriophyoidea: Eriophyidae) from China are described and illustrated. They are Cecidophyes truncatis sp. nov. on Acer truncatum Bunge (Aceraceae), Cecidophyes hirsutes sp. nov. on Cardamine hirsute L. (Cruciferae) and Paracolomerus fopingacer sp. nov. on Acer sp. L. (Aceraceae). All the new species described herein are vagrants on the host plant.     

The identity of Seiulus rhenanus Oudms. and Typhlodromus foenilis Oudms. (Acari: Phytoseiidae)

Seiulus rhenanus Oudms. and Typhlodromus foenilis Oudms. (Acari: Phytoseiidae) are considered to be distinct taxa and both sexes are described and placed, provisionally, in the genus Typhlodromella Muma. Anthoseius tortor Beglyarov is considered to be a junior synonym of Typhlodromella rhenanus (Oudms.), and Typhlodromus cryptus Athias-Henriot is considered to be a junior synonym of Typhlodromella foenilis (Oudms.).     

New species of Eustigmaeus Berlese, 1910 (Acari: Stigmaeidae) from Turkey

Two new species of Eustigmaeus from Turkey, E. bali and E. turcicus, are described and illustrated.     

Five new Uropodina species from New Caledonia (Acari: Mesostigmata)

Five new species – Deraiophorus pinesensis sp. nov., Oplitis hallidayi sp. nov., Castriidinychus neocaledonicus sp. nov., Trigonuropoda neocaledonica sp. nov. and Trigonuropoda fendai sp. nov. – are described and illustrated on the basis of specimens collected in New Caledonia. http://www.zoobank.org/urn:lsid:zoobank.org:pub:2F6876E3-948B-4EDC-93EF-4623033BD71E     

Ptyctimous mites (Acari,Oribatida) from the Ecuador rainforest

Twelve species of ptyctimous mite have been found in new localities in forest litter, in two National Parks of Ecuador: Bombuscaro and Cajanuma. The ptyctimous mite fauna has been shown to differ totally between the two parks. Two new species are described: Euphthiracarus bombuscaroensis sp. nov. and Austrophthiracarus cajanumaensis sp. nov. Three species are reported from Ecuador for the first time. The specimens of two species: Protophthiracarus quasiminisetosus Niedba?a and Illig, 2006 Niedba?a, W. and Illig, J. 2006. New species of ptyctimous mites (Acari, Oribatida) from Ecuador.. Tropical Zoology, 20(1): 107–122.  [Google Scholar] and Notophthiracarus aculeatus Niedba?a, 1988 found in Ecuador have some morphological characters different from their analogues in the type specimens.     

Eustigmaeus mites from Turkey (Acari: Stigmaeidae)

Five new species of the genus Eustigmaeus from Turkey, E. absens, E. erzincanensis, E. erzurumensis, E. fani and E. vacuus, are described and illustrated. Adult male of E. turcicus Do?an and Ayy?ld?z, and deutonymph of E. schusteri (Summers and Price, ) are described for the first time. Several new records are noted.     

Some new species of the family Zerconidae (Acari: Mesostigmata) from Turkey

Three new species of zerconid mites, Prozercon (Prozercon) mersinensis, P. (Prozercon) yavuzi and P. (Prozercon) kafkasoricus, from Turkey are described and illustrated, and a key to adults of known species of Prozercon provided.     

A survey of external morphology of mites of the superfamily Eupodoidea Banks, 1894 (Acari: Acariformes)

This paper represents the initial stage of a systematic study of the mite superfamily Eupodoidea Banks, 1894. For the first time a comprehensive account of external morphology is given with many structures being illustrated by scanning electron micrographs. Where homologies have been established, standardized notations are applied and compared with the terminology previously used by other authors.     

Breeding biology and population structure of the intertidal crab Petrolisthes laevigatus (Anomura: Porcellanidae) in central-southern Chile

The present study describes the seasonal reproductive cycle and population structure of the porcellanid crab Petrolisthes laevigatus, a typical inhabitant of the rocky intertidal. A total of 960 individuals (including 372 females) was collected in monthly samples from October 1993 to December 1994 in central-southern Chile. Ovigerous females were present between August and December, and were absent between January and July. The breeding season started during late winter (August), and females with embryos close to hatching occurred between October and end of spring (December). Considering the gonadosomatic index and the duration of the incubation period, it is concluded that P. laevigatus has a markedly seasonal breeding period with probably two successive spawnings per female per season. Our results compared with previous studies in temperate intertidal porcellanids suggest a lower structural variability of the population during the sampling period, but a pronounced seasonal variation in both sex ratio and abundance. The influence of environmental habitat conditions (i.e. temperature) is suggested to be responsible for the lower variation in the crab population size structure in ovigerous females, and the almost constant size distribution observed in males.     

New zerconid mites (Acari: Gamasida: Zerconidae) from Turkey

In this study, four new species of zerconid mites, Prozercon (Plumatozercon) umidicola, Prozercon (s. str.) denizliensis, Zercon salmani and Zercon beleviensis, from Turkey are described and illustrated.     

Two new and one known marine water mite (Acari: Hydrachnidia: Pontarachnidae) from South-East Africa

Two new species of Litarachna are described, L. marshalli sp. n. from South Africa and L. cawthorni sp. n. from Kenya. The female of L. denhami Lohmann, 1909 is described from S. Africa. The distribution of glands and glandularia is discussed.     

New species of ptyctimous mites (Acari,Oribatida) from Cuba

Five new species of two genera of ptyctimous, soil mites (Acari, Oribatida, Steganacaridae) are described: Protophthiracarus aethes sp. nov., Protophthiracarus pinarensis sp. nov., Protophthiracarus ruseki sp. nov., Notophthiracarus granpiedraensis sp. nov. and Notophthiracarus obturatus sp. nov. The identification key for determination of Protophthiracarus species of Cuba is provided. One of the genera, Notophthiracarus, is newly found in the Antilles. New described species have increased the number of endemic species for Cuba and increased the number of the known species of ptyctimous mites to 47.     

Some species of Favognathus Luxton, 1973 (Acari: Actinedida: Cryptognathidae) from Turkey

Two new species of cryptognathid mites are described and illustrated from Turkey. One other species, Favognathus orbiculatus (Livshitz, 1974) is also reported as a new record. A key is provided to the known species of Favognathus     

Thalassarachna and Halacarellus (Halacaridae: Acari): two separate genera

During the last half century, the generic names Halacarellus and Thalassarachna have been used in parallel. The author now proposes to regard them as two separate genera distinguished by the number of dorsal setae on tarsi I and II. Halacarellus s. str., with Halacarus balticus Lohmann as the type species, has three dorsal setae on both tarsi, whilst Thalassarachna s. str., with the type species Acarus basteri Johnston, has five or more dorsal setae on tarsus I and four or more on tarsus II. The number of setae on tarsi I and II is expected to be a valid generic character. Species of the genus Halacarellus s. str. are recorded from both the northern and southern hemispheres; the North Atlantic species are distinct from those in the southern oceans. Thalassarachna s. str. is known only from the North.     

Two new species of Prozercon (Plumatozercon) (Acari: Mesostigmata: Zerconidae) from Turkey

Two new species of zerconid mites, Prozercon (Plumatozercon) orhani and P.(P.) kamili, from Turkey are described and illustrated.     

A new species of the genus Scaptognathus (Acari,Halacaridae) from Japan

A new species under the name Scaptognathus ventridiscus sp. nov. is described from Japan. It differs from its congeners by the possession of a ventral disc in the male, a peculiar arrangement of dorsal plates and dorsal setae, and unique leg chaetotaxy.     

Two new species of genus Arrenurus Duges, 1833 (Arrenuridae,Hydrachnellae, Acari) from Turkey

The males and females of Arrenurus dileri n. sp. collected from standing waters at the foothills of the Taurus Mountains in southern Turkey and males of Arrenurus ???kl?ensis n. sp. collected from I??kl? Lake, which is located in south-west Turkey, are described here. The morphological features of the species are compared with those of the similar species Arrenurus claviger Konike, 1882 and Arrenurus nodosus (Koenike, 1896).