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Strelkovimermis acuticauda n. sp. and Strelkovimermis buccalis n. sp. (Nematoda: Mermithidae) from Adult Chironomids (Diptera: Chironomidae) from Lake Itasca, Minnesota
Arthur A. Johnson and Maurice G. Kleve
The Journal of Parasitology
Vol. 82, No. 3 (Jun., 1996), pp. 478-483
Stable URL: http://www.jstor.org/stable/3284089
Page Count: 6
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Specimens of 2 mermithid species were obtained from adults of undetermined species of chironomids emerging from Lake Itasca (Clearwater County), Minnesota. Both species have the characteristics of species in the genus Strelkovimermis. The new species are distinguishable from one another and from the 8 currently accepted species in the genus by their small size, shape of the posterior end, length of the buccal funnel, length of the cephalic papillae, location of the mouth, and morphology of the spicule region and vagina. Strelkovimermis acuticauda n. sp. is unique in possessing an acute posterior end, an auxiliary protractor muscle, and a relatively long vagina, whereas Strelkovimermis buccalis n. sp. is distinguishable from other Strelkovimermis species by its thick cuticle and exceptionally long buccal funnel. The significance of the tail muscles is emphasized as a taxonomic feature to be used in describing future species of Strelkovimermis. A key to the 10 species of Strelkovimermis is provided.
The Journal of Parasitology © 1996 The American Society of Parasitologists