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On Artigasia horridospina n.sp., Longior semialata n.sp., Mentecle magnifica n.sp., Paraxyo ensicrinatus n.sp. (Oxyurida: Hystrignathidae) and Pulchrocephala? pulchrocephala Travassos, 1925 (Oxyurida: Pulchrocephalidae)

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Summary

Four new species of hystrignathid nematodes are described from the midgut caeca of Passalus unicornus (Coleoptera: Passalidae) from St. Lucia, West Indies.

Artigasia horridospina n.sp. is differentiated from A. dispar van Waerebeke, 1973 by virtue of fewer rows of spines in the oesophageal region and in possessing lateral alae, and from A. insignia Travassos & Kloss, 1958 in the extent of the oesophageal spiens and in having the lateral alae commence more anteriorly. The first annule is also much shallower than that of A. insignia.

Longior semialata n.sp. is differentiated from L. longicollis Travassos & Kloss, 1958 on body length, ‘b’ ratio, egg size and the starting point of the lateral alae.

Mentecle magnifica n.sp. differs from M. parvus Travassos & Kloss, 1958 in having the spines of the oesophageal region extending much further down the body and in having ridged eggs. It is also longer and relatively thinner.

Paraxyo ensicrinatus n.sp. differs from P. monodelpho Travassos & Kloss, 1958 in having a proportionately longer tail. The spines in the oesophageal region also extend considerably further posteriorly than in P. monodelpho.

Two ‘types’ of male associated with the above nematodes are described and illustrated, but not assigned to females.

Pulchrocephala? pulchrocephala Travassos, 1925 is redescribed from the gut of the mole-cricket Scapteriscus vicinus.

Scanning electron micrographs of four of the described species are given and briefly discussed. ac]19801024

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References

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Authors and Affiliations

  1. Commonwealth Institute of Helminthology, 103 St. Peter's Street, AL1 3EW, St. Albans, Herts, UK

    D. J. Hunt

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  1. D. J. Hunt
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Hunt, D.J. On Artigasia horridospina n.sp., Longior semialata n.sp., Mentecle magnifica n.sp., Paraxyo ensicrinatus n.sp. (Oxyurida: Hystrignathidae) and Pulchrocephala? pulchrocephala Travassos, 1925 (Oxyurida: Pulchrocephalidae). Syst Parasitol 3, 33–52 (1981). https://doi.org/10.1007/BF00012238

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  • DOI: https://doi.org/10.1007/BF00012238

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