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Lonchophylla bokermanni is a nectar-feeding bat endemic to south-east Brazil that is currently categorized as Vulnerable in Brazil but as Data Deficient on the IUCN Red List. Originally described in the Cerrado savannah of Minas Gerais state in 1978, the species is known to occur in only two other nearby localities. In the last 2 decades individuals identified as L. bokermanni were recorded in the Brazilian Atlantic Forest, increasing the known range of the species. A recent taxonomic review, however, has shown that Atlantic Forest individuals belong to a separate, new species, Lonchophylla peracchii. L. bokermanni, therefore, is known from only three localities, with an Extent of Occurrence of 1,506 km2. Because this EOO is < 5,000 km2, the species is known from <5 localities, and there is a presumed continued decline in its habitat extent and quality, it should be categorized as Endangered on the IUCN Red List. We recommend that the state of the three known populations of L. bokermanni be evaluated, and that surveys for further populations are required, particularly in Serra do Cipó National Park.

Suitable habitat fragment size, isolation, and distance from a source are important variables influencing community composition of plants and animals, but the role of these environmental factors in determining composition and variation of host-associated microbial communities is poorly known. In parasite-associated microbial communities, it is hypothesized that evolution and ecology of an arthropod parasite will influence its microbiome more than broader environmental factors, but this hypothesis has not been extensively tested. To examine the influence of the broader environment on the parasite microbiome, we applied high-throughput sequencing of the V4 region of 16S rRNA to characterize the microbiome of 222 obligate ectoparasitic bat flies (Streblidae and Nycteribiidae) collected from 155 bats (representing six species) from ten habitat fragments in the Atlantic Forest of Brazil. Parasite species identity is the strongest driver of microbiome composition. To a lesser extent, reduction in habitat fragment area, but not isolation, is associated with an increase in connectance and betweenness centrality of bacterial association networks driven by changes in the diversity of the parasite community. Controlling for the parasite community, bacterial network topology covaries with habitat patch area and exhibits parasite-species specific responses to environmental change. Taken together, habitat loss may have cascading consequences for communities of interacting macro- and microorgansims.

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