Abstract
Trichomycetes are endosymbiotic fungi and protists that attach to the gut lining of insects and other arthropods. The vast majority of trichomycetes have been reported from lotic habitats (primarily flowing streams), whereas lentic habitats are relatively unexplored. Despite being largely understudied, lentic waters should be viable habitats for trichomycetes because insect types commonly colonized by trichomycetes in lotic systems are also found in lentic habitats. As part of a larger study, two lakes in separate watersheds within the Halifax Regional Municipality, Nova Scotia, Canada, were sampled. Six species of trichomycetes were found, including three new species, Smittium guttisporum sp. nov. R.T. William and Strongman, Stachylina serpula sp. nov. R.T. William and Strongman, and Stachylina zeppelin sp. nov. R.T. William and Strongman, all isolated from dipteran (Chironomidae) hosts. A new continental record for Smittium bulbosporophorus L.G. Valle & Santam., previously only reported from Spain, is documented from Governor's Lake, Timberlea, Nova Scotia. Smittium dipterorum Lichtw., known from Costa Rica, Dominican Republic, and Mexico was also collected from the Governor's Lake site, establishing a new Canadian record.
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