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Anomalomermis ephemerophagis n. g., n. sp. (Nematoda: Mermithidae) parasitic in the mayfly Ephemerella maculata Traver (Ephermeroptera: Ephermerellidae) in California, USA

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  • A new nematode, Anomalomermis ephemerophagis n. g., n. sp. (Nematoda: Mermithidae) is described from the mayfly Ephemerella maculata Traver, 1934 (Ephermeroptera: Ephermerellidae) in California. The new species is characterized by 6 cephalic papillae and 4 additional disk papillae located on the head between the cephalic papillae and stoma. Additional diagnostic characters are: a mouth opening terminal; absence of X-fibers in the cuticle of both postparasitic juveniles and adults; paired, curved, medium-sized spicules; a straight barrow-shaped vagina and large eggs. Two infectious agents were present in some specimens. This is the first description of an adult nematode from a mayfly.
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  • Poinar Jr., G., Walder, L., & Uno, H. (2015). Anomalomermis ephemerophagis n.g., n. sp. (Nematoda: Mermithidae) parasitic in the mayfly Ephemerella maculata Traver (Ephermeroptera: Ephermerellidae) in California, USA. Systematic Parasitology, 90(3), 231-236. doi:10.1007/s11230-015-9551-6
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  • 90
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  • 3
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  • Hiromi Uno thanks the Eel River Critical Zone Observatory: National Science Foundation CZP EAR-1331940 for use of the Eel River Critical Zone Observatory and for a Moore Foundation award to the Berkeley Initiative in Global Change Biology. Larissa Walder thanks the U.C. Berkeley Undergraduate Research Apprentice Program.
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