mites are highly host specific: two new species of Berlese associated with sympatric ants in southern Quintana Roo, Mexico.

Two new species of , sp. nov. and sp.

Description of the second species of Cingulacarus Elsen (Acari, Mesostigmata, Diplogyniidae), and notes on the genus.

Cingulacarus Elsen is a monotypic genus of Trigynaspida based on C. gangeticus Elsen, collected from the scarabaeid beetle Scarabaeus gangeticus (Castelnau) (Col., Scarabaeidae) in the Democratic Republic of the Congo.

A new mite species of Pseudoleptus Bruyant (Tenuipalpidae), and two new records (Tetranychidae, Linotetranidae) reported from the Caspian Sea coasts in Iran.

A new species of the genus Pseudoleptus Bruyant, 1911 (Tenuipalpidae), Pseudoleptus avicennai sp. nov., is described and illustrated based on female specimens collected from bermudagrass, Cynodon dactylon (Poaceae), in Iran.

Review of the genus Sessiluncus (Acari: Mesostigmata: Ologamasidae), description of male and redescription of female of Sessiluncus aegypticus, and notes on some morphological characters of the genus.

The concept of the genus Sessiluncus G. Canestrini is reviewed, based on a review of the literature and examination of some described and undescribed species. An updated diagnosis of the genus is presented.

A new genus and species of Laelapidae (Acari: Mesostigmata) from Iran.

A new monotypic mite genus of the family Laelapidae, Persicolaelaps gen. nov., is described to accommodate a new species, P.

A new species of Platyseius Berlese (Acari: Mesostigmata: Blattisociidae) from Iran, and a key to the world species of the genus.

We describe a new species of Platyseius Berlese, 1916 belonging to the subglaber species group, P. persicus sp. nov.

New species and records of Uropodina mites from Iran (Acari, Mesostigmata).

In this paper, a new species of the genus Nenteria Oudemans, 1915 is described on the basis of adult female and male specimens collected in soil and litter in parks in Kerman, southeastern Iran, and Tehran, northern Iran. A key to the Iranian species of Nenteria is also presented, and Trachycilliba abantica (Bal & Őzkan, 2007) is reported for the first time in Iran.

Description of a new species of the genus Laelaspis Berlese (Acari, Mesostigmata, Laelapidae) from Iran.

A new species of the genus Laelaspis Berlese, Laelaspis elongatus sp. n. is described based on adult female and male specimens collected in association with Pheidole pallidula (Nylander) (Hym.

A new species of Laelaspis Berlese (Acari: Mesostigmata: Laelapidae) from Iran, with a revised generic concept and notes on significant morphological attributes in the genus.

A short diagnosis and a more detailed diagnosis of the genus Laelaspis are presented. Until now, a total of 40 described species belong to the genus, including a new species described here, and excluding the four following species previously described as Laelaspis or Hypoaspis (Laelaspis): L. badrii Nasr & Nawar [considered as Cosmolaelaps badrii comb.

Two new species of Gaeolaelaps (Acari: Mesostigmata: Laelapidae) from Iran, with a revised generic concept and notes on significant morphological characters in the genus.

Two new species of laelapid mites of the genus Gaeolaelaps Evans & Till are described based on adult females collected from soil and litter in Kerman Province, southeastern Iran, and Mazandaran Province, northern Iran. Gaeolaelaps jondishapouri Nemati & Kavianpour is redescribed based on the holotype and additional specimens collected in southeastern Iran. The concept of the genus is revised to incorporate some atypical characters of recently described species.