Vahlkampfia avara is a species of excavates.[1] It has a PAS-positive surface layer and forms cysts in culture.
References
^Page, Frederick C. (1967). "Taxonomic Criteria for Limax Amoebae, with Descriptions of 3 New Species of Hartmannella and 3 of Vahlkampfia". The Journal of Eukaryotic Microbiology. 14 (3): 499–521. doi:10.1111/j.1550-7408.1967.tb02036.x. ISSN1066-5234. PMID6050658.
