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ABSTRACT DIFFERENCES in the vulval region of the Tylenchid nematodes of the genus _Heterodera_ are of considerable systematic value1–3. The “bullae”, knob-like structures4 not present in all
species, are of particular importance. They seem to be endocuticular, but their function is unknown. This communication reports the presence in the four species so far examined of other
endocuticular bodies closely associated with the vulva itself. My attention was directed to them by Dr C. Ellenby, who first observed them in sectioned material of _H. rostochiensis_ and _H.
tabacum_ (unpublished work). SIMILAR CONTENT BEING VIEWED BY OTHERS MALE TERMINALIA OF CERCOPIDAE (HEMIPTERA, CICADOMORPHA): TOWARDS A CONSENSUS TERMINOLOGY Article Open access 17 May 2021
DETAILED MORPHOLOGICAL STRUCTURE AND PHYLOGENETIC RELATIONSHIPS OF _DEGEERIELLA PUNCTIFER_ (PHTHIRAPTERA: PHILOPTERIDAE), A PARASITE OF THE BEARDED VULTURE _GYPAETUS BARBATUS_
(ACCIPITRIFORMES: ACCIPITRIDAE) Article Open access 10 January 2023 MORPHOLOGY OF THE OLDEST FOSSIL SUBFAMILY OF LIMONIIDAE (DIPTERA, ARCHITIPULINAE) IN THE LIGHT OF EXCEPTIONALLY PRESERVED
MESOZOIC MATERIAL Article Open access 17 December 2021 ARTICLE PDF REFERENCES * Cooper, B. A., _Proc. Second Easter Sch. Agric. Sci. Univ. Nott._, 269 (1955). * Taylor, A. L., _Proc. S-19
Workshop in Phytonematology Univ. Tennessee (H. Taxon)_, 1 (1957). * Mulvey, R. H., _Canad. J. Zool._, 35, 421 (1957). Article Google Scholar * Franklin, M. T., _J. Helminth_, 17, 127
(1939). Article Google Scholar Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Department of Zoology, University of Newcastle upon Tyne, E. M. WILSON Authors * E. M.
WILSON View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE WILSON, E.
Vulval Bodies in Certain Species of _Heterodera_. _Nature_ 217, 879 (1968). https://doi.org/10.1038/217879a0 Download citation * Received: 29 January 1968 * Issue Date: 02 March 1968 * DOI:
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