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Gyronympha, Prosnyderella and Criconympha, three new genera of calonymphids (Parabasalia: Trichomonadida) from wood-eating termites

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Three new genera of calonymphids (multinucleate trichomonads) are described from the Harold Kirby collection of termite symbionts. From both Rugitermes kirbyi and R. panamae, Gyronympha is an oval protist with a cluster of 20–30 karyomastigonts arranged as a tuft that fills the anterior one-quarter to one-third of the cell. Prosnyderella, from the same termites, is pyriform with over 20 nuclei in karyomastigonts. The karyomastigonts are interspersed with akaryomastigonts. Criconympha, an oval trichomonad with a loose ring or slight spiral array of 20–30 karyomastigonts, slightly posterior to a nonmastigont anterior portion of the cell, is found in Proneotermes perezi and Neotermes holmgreni.

Keywords: Gut symbionts; Karyomastigonts; Parabasal body; Trichomonads

Document Type: Original Article


Affiliations: 1: Department of Geosciences, University of Massachusetts Amherst, Amherst, MA 01003 USA 2: Department of Zoology, University of California Berkeley, Berkeley, CA 94704, USA

Publication date: April 1, 2002


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