Arthropod cut fungi from Puerto Rico and summary of tropical trichomycetesworldwide

This is the first survey of Trichomycetes in Puerto Rico. Various arthropod s (including millipedes, beetles, larval dipterans, isopods, and crabs) wer e collected from terrestrial, freshwater and marine habitats, and their gut fungi identified. The four orders of the class Trichomycetes were represen ted, including the following genera: Amoebidium, Asellaria, Enterobryus, Ge nistellospora, Harpella, Leidyomyces, Paramoebidium, Smittium and Stachylin a. These correspond to 60 % (9/15) of the genera previously reported from t ropical regions worldwide. Results of this survey are combined with the pre vious reports of tropical Trichomycetes and summarized as a species list. T he Puerto Rican genera are discussed, highlighting features of particular i nterest to those considering future studies on Trichomycetes. We highlight the potential severe underestimation of the diversity of tropical Trichomyc etes and suggest that further surveys are warranted, especially with the cu rrent focus on biodiversity and tropical microfungi.