Fig. 2. Simplified neighbor-joining tree reconstructed from partial cox1 in Lurking in the dark: Cryptic Strongyloides in a Bornean slow loris

Fig. 2. Simplified neighbor-joining tree reconstructed from partial cox1 gene (716 bp) sequences of Strongyloides spp. S. fuelleborni sequences for Bornean primates cluster within the S. fuelleborni group, together with previously described sequences for the parasite found in African and Japanese primates. The S. stercoralis cluster includes sequences from humans from Laos, Africa and Japan, captive chimpanzees, and dogs. The Strongyloides sp. cluster corresponds to sequences from the slow loris. An alternative hypothesis is presented next to the tree, where instead of representing a different species, Strongyloides sp. would be part of a cryptic assemblage within the S. stercoralis group.