New records of ectoparasitic Acari (Arachnida) and Streblidae (Diptera) from bats in Jalisco, Mexico

Association of bat flies (Diptera: Streblidae) and bats: Richness and host specificity in Western Mexico

As part of a widespread ecological study on the ectoparasites of bats in Western Mexico, we report new information on the specificity, and distribution of bat flies in a geographical transition zone between the neartic and neotropical zones. Fifteen (15) species of bats representing three families (Mormoopidae, Phyllostomidae, and Vespertilionidae) were collected in 10 locations throughout western Mexico. A total of 276 bat flies, representing 6 genera and 25 species, were identified four species of the bat flies are new records for the region indicating an expansion of the distribution for Trichobius corynorhini (Cockerll, 1910), T. hoffmannae (Guerrero & Morales-Malacara, 1996), T. intermedius (Peterson & Hürka, 1974) and Nycterophilia natali (Wenzel, 1966). These records update the species richness of streblids to 40 species in the state of Jalisco, representing 65.6% of the total number of 61 species of streblids recorded in Mexico. The interaction network showed a high degree of specialization of the bat flies towards their hosts (H2' = 0.92). Similarly, the specificity indices showed that there is a high ecological specificity (SI) with an average of 92%. of all the bat flies was associated with their primary hosts, while the average value of specificity of the phylogenetic trees (S_TD) of the six streblid species that presented more than one host was 1.7%, indicating a high specificity. The results of this study provide relevant information on bat-parasite associations and highlight the need for further research to obtain information on the geographic distribution of streblids and their hosts.

Phylogenetic analyses reveal bat communities in Northwestern Mexico harbor a high diversity of novel cryptic ectoparasite species

Parasites are integral parts of ecosystem function and important drivers of evolutionary processes. Characterizing ectoparasite diversity is fundamental to studies of host-parasite interactions, evolution, and conservation, and also for understanding emerging disease threats for some vector borne pathogens. With more than 1400 species, bats represent the second most speciose mammalian clade, but their ectoparasite fauna are poorly known for most species. We sequenced mitochondrial Cytochrome Oxidase C subunit I and nuclear 18S ribosomal gene fragments, and used Bayesian phylogenetic analyses to characterize ectoparasite taxon identity and diversity for 17 species of parasitized bats sampled along the Baja California peninsula and in Northwestern Mexico. The sequence data revealed multiple novel lineages of bat bugs (Cimicidae), flies (Nycteribiidae and Streblidae), and ticks (Argasidae). Within families, the new linages showed more than 10% sequence divergence, which is consistent with separation at least at the species level. Both families of bat flies showed host specificity, particularly on Myotis species. We also identified new records for the Baja peninsula of one tick (Carios kelleyi), and of five Streblid bat fly species. One Nycteribiid bat fly haplotype from Pallid bat (Antrozous pallidus) hosts was found throughout the peninsula, suggesting potential long distance co-dispersal with hosts. Different bat bug and tick communities were found in the north and south of the peninsula. This study is the first systematic survey of bat ectoparasites in the Baja California peninsula, revealing novel lineages that are highly genetically differentiated from other parts of North America. For some ectoparasite species, haplotype distributions may reflect patterns of bat migration. This work is a first step in characterizing ectoparasite diversity over the Baja California peninsula, and understanding how ecological and evolutionary interactions shape bat ectoparasite communities among host species in different parts of their ranges.

A New Species of the Genus Periglischrus (Acari: Spinturnicidae) on Leptonycteris nivalis (Chiroptera: Phyllostomidae) From Mexico, Including a Key to Species of the vargasi Species Group

Periglischrus calcariflexus new species, was found on the Greater Long-tongued bat Leptonycteris nivalis (Saussure) in Mexico. The female, male, deutonymphs, and protonymph are described and illustrated. Additionally, we evaluate the morphological variability of this species based on its geographical distribution. Considering this new species, the number of species in the vargasi species group within the genus Periglischrus increases to five; therefore, herein we include a key for the known species in the vargasi species group for the Neotropics.

Bat flies (Diptera: Streblidae) of phyllostomid bats (Chiroptera: Phyllostomidae) from the mountainous central region of Veracruz, Mexico

The studies of bat flies of the family Streblidae Kolenati, 1863 in Mexico have intensified in the last five years, usually providing new geographical records of species and new bats host records. Currently, the Mexican fauna of streblids is composed of 59 species, representing 26% of total global species richness. Veracruz is one of the states with a high number of species in Mexico with 69% of species recorded in the country. We sampled a total of 527 bats of four subfamilies and 12 species, collecting a total of 870 specimens of 19 species of streblids. Megistopoda proxima (Séguy, 1926) and Paratrichobius longicrus (Miranda Ribeiro, 1907) were the most abundant species in the collection and are the two species found in a higher number of bat species. We provide comments on the taxonomy and host species for bat flies, increase the species records for this state, and add new host records for some streblids, contributing to the knowledge of streblid fauna of the mountain central region of the state of Veracruz, Mexico.

New Geographical Records of Bat Flies (Diptera: Streblidae) Associated With Phyllostomid Bats (Chiroptera: Phyllostomidae) in the West Highlands of Mexico

Streblidae are ectoparasites exclusive to bats and feed only on their blood. Studies on ectoparasite fauna have increased our ecological knowledge of the parasitic relationship between streblids and their bat hosts. We evaluate assemblages of phyllostomid bats and their ectoparasitic flies in three scenarios with different types of anthropogenic use: pine-oak forest, avocado orchards, and an urban park during an annual cycle in the highlands of Michoacan, Mexico. We recorded a total of 325 bats belonging to nine species in three subfamilies: Glossophaginae, Desmodontinae, and Stenodermatinae, and obtained 225 bat flies belonging to seven species. The nectivorous bat Anoura geoffroyi Gray, 1838, had the highest prevalence of infestation and the hematophagous bat Desmodus rotundus (É. Geoffroy, 1810) was the host with the highest mean parasite abundance and mean intensity. Aspidoptera delatorrei Wenzel, 1966, Megistopoda proxima (Séguy, 1926), Paratrichobius longicrus (Miranda Ribeiro, 1907), Trichobius brennani Wenzel, 1966, and T. parasiticus Gervais, 1844, are new records for the state of Michoacan reported in this study.