Eight species of Harpellales and three species of Eccrinales (Zygomycota: Trichomycetes) were found associated with the digestive tract of arthropods from terrestrial and aquatic environments in the central Amazon region of Brazil. New species of Harpellales include:
Harpella amazonica
,
Smittium brasiliense
,
Genistellospora tropicalis
in
Simuliidae larvae
and
Stachylina paucispora
in Chironomidae larvae. Axenic cultures of
S. brasiliense were obtained. Probable new species of
Enterobryus
(Eccrinales),
Harpella
, and
Stachylina (Harpellales) are described but not named. Also reported are the previously known species of Eccrinales,
Passalomyces compressus
and
Leidyomyces attenuatus
in adult Coleoptera (Passalidae), and
Smittium culisetae
and
Smittium aciculare
(Harpellales) in Culicidae and Simuliidae larvae, respectively. Comments on the distribution of some of these fungi and their hosts in the Neotropics are provided.