Fungi living in the guts of larval aquatic insects in northwestern Argentina

Nine species of Harpellales (Zygomycota: Trichomycetes) and one species of Amoebidiales are reported from the northwestern provinces of Tucuman, Salta , and Jujuy in Argentina. New species included Smittium urlbanum and Stachy lina jujuyensis from Chironomidae larvae and Paramoebidium argentinense fro m Ephemeroptera nymphs. Harpella tica, previously known only fi om Costa Ri ca and Puerto Rico, was found in Simuliidae larvae, sometimes in the same s treams with H. meridianalis, a fungus common in simuliids in more southern regions of Argentina and Chile. The warmer stream waters in the northwester n provinces had an impoverished insect fauna and we found fewer species tha n in the colder streams of Patagonia.