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A Note on the Specific Identity of Trichostrongylus longispicularis Gordon, 1933

Published online by Cambridge University Press:  18 November 2009

R. I. Sommerville
R. I. Sommerville
Affiliation:
McMaster Laboratory, C.S.I.R.O., Sydney, N.S.W.
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Extract

The nematode Trichostrongylus longispicularis was described by Gordon (1933) from a single male recovered from a sheep in New South Wales. Gordon considered that the male of this species could be readily distinguished from the males of other species of the genus recorded from ruminants by an asymmetrical dorsal ray of the bursa and by the length and form of the spicules. The dorsal ray is described as being bifid, one bifurcation being simple and the other possessing secondary branches, one situated internally and the other externally. The slender spicules were 184·6 microns long, and terminated in fine sickle-shaped structures.

Andrews (1934 and 1935) recorded the species from cattle in the United States. In his first description (Andrews, 1934) he noted that his specimens agreed very closely with the description published by Gordon (1933), but he referred to hook-like projections on the spicules. However, he failed to find these projections in the specimen discussed in his record of 1935. As he made no reference to the dorsal ray of the bursa, it is presumed that this agreed with the description and figure published by Gordon (1933). T. longispicularis was subsequently reported by Roberts (1938 and 1939) from cattle in Queensland, but no comments were made on its morphology.

Type
Research Papers
Information
Journal of Helminthology , Volume 30 , Issue 1 , June 1956 , pp. 21 - 24
Copyright
Copyright © Cambridge University Press 1956

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References

Andrews, J. S., 1934.— “Trichostrongylus longispicularis collected from cattle in United States.” Proc. Helminth. Soc. Wash., 1, 13. (W.L. 16747a).Google Scholar
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