A new species of Parichoronyssus (Acari : Dermanyssoidea : Macronyssidae) from bats of the genus Phyllostomus (Chiroptera : Phyllostomidae) in Peru and Venezuela, with keys to the species of Parichoronyssus

Parichoronyssus bakeri new species was found on two phyllostomid bats species, the greater spear-nosed bat, Phyllostomus hastatus (Pallas), and the lesser spear-nosed bat, Phyllostomus elongatus (E. Geoffroy), in Pakitza, National Park Mann, Madre de Dios, Peru, including additional material examined from Venezuela. The female, male, deutonymph, and protonymph are described and illustrated. A key to the seven species of Parichoronyssus is provided

New species of the genus Spinturnix (Acari : Mesostigmata : Spinturnicidae) on Corynorhinus mexicanus (Chiroptera : Vespertilionidae) in Central Mexico

The new species Spinturnix traubi was found on the bat Corynorhinus mexicanus in Tlaxcala, Mexico. The female, male, female deutonymph, male deutonymph, and protonymph are described and illustrated

A new species of the genus Periglischrus (Acari : Mesostigmata : Spinturnicidae) on Choeronycteris mexicana (Chiroptera : Phyllostomidae) in central Mexico

Periglischrus leptosternus new species was found on the bat Choeronycteris mexicana in the central part of Mexico. The female, male, and protonymph are described and illustrated

A new species of the genus Eudusbabekia (Acari : Prostigmata : Myobiidae) on Leptonycteris nivalis (Chiroptera : Phyllostomidae) in central Mexico

Eudusbabekia provirilia new species was found on the bat Leptonycteris nivalis (Saussure) in the central part of Mexico. The female, male, protonymph, and larva are described and illustrated

Parasites of Tadarida brasiliensis mexicana (Chiroptera : Molossidae) from arid regions of Mexico

Ninety-eight Mexican free-tailed bats, Tadarida brasiliensis mexicana, collected from 4 locations in Mexico between November 1996 and June 1998, were examined for metazoan parasites. Twenty-one parasitic taxa belonging to 3 phyla (Plathyhelminthes, Nematoda, and Arthropoda) were recovered including 5 helminth taxa (3 digenean, 1 cestode, and 1 nematode) and 16 arthropod taxa (12 mite, 2 tick, and 2 insect). The digenean Ochoterenatrema labda was the most prevalent and abundant helminth in collections from the states of Puebla, Zacatecas, and Durango. Urotrema scabridum and Dicrocoelium rileyi reached the highest values of prevalence and mean abundance of infection in Nuevo Leon state. Among arthropod taxa recovered, Chiroptonyssus robustipes was the most prevalent and abundant parasite in all 4 localities, and its nymphal stage was the most abundant form recovered. In total, 10 new host and 43 locality records are presented

Acarine infracommunities associated with the Mexican free-tailed bat, Tadarida brasiliensis mexicana (Chiroptera : Molossidae) in arid regions of Mexico

The Mexican free-tailed bat, Tadarida brasiliensis mexicana, is one of the most widely distributed bats, and its range includes the whole Mexican territory. Ectoparasites of this bat have been the subject of isolated reports, but no studies of its community ecology have been conducted. The acarine infracommunities associated with this bat were analyzed, comparing bat populations from three and regions of Mexico: an abandoned factory in Nombre de Dios, Durang

seasonal distribution and circadian activity in the troglophile long-footed robber frog, eleutherodactylus longipes (anura: brachycephalidae) at los riscos cave, queretaro, mexico: field and laboratory studies

Los Riscos Cave belongs to the El Abra limestone and its geographical location is in the Sierra Gorda in the State of Queretaro, Mexico. The cave has a high faunal diversity that includes arthropods and some vertebrates, such as vampire bats and anurans, and includes the robber frog Eleutherodactylus longipes (Baird, 1859). The abundance of the robber frog changes non-randomly between dry and rainy seasons and is related to the search for humid conditions inside the cave. In addition, the robber frog was located in areas where some scattered light may influence its dispersion inside the cav