Lagenivaginopseudobenedenia Explained

Lagenivaginopseudobenedenia is a genus of monopisthocotylean monogenean (a group of ectoparasitic flatworms), included in the family Capsalidae.^[1] The type-species of the genus is Lagenivaginopseudobenedenia etelis Yamaguti, 1966.^[2] The genus includes only 2 species, which are both parasitic on the gills of marine fish of the family Lutjanidae.

Morphology

Species of the genus Lagenivaginopseudobenedenia are, like most monogeneans of the family Capsalidae, flat with a posterior disc-shaped haptor which attaches to the gill of their host. Their distinctive feature is a “vagina lageniform, between uterus and right intestinal limb, opening almost midventrally behind cirrus pouch”.^[2]

Etymology and curiosity of zoological nomenclature

The etymology of this extremely long name involves three steps:

• Satyu Yamaguti, in 1966, wrote that the “compound generic name Lagenivaginopseudobenedenia refers to the lageniform vagina and close relationship to Pseudobenedenia”.
• The name of the genus Pseudobenedenia Johnston, 1931 itself was previously formed from the prefix ‘Pseudo-’ and the genus name Benedenia by Thomas Harvey Johnston in 1931.^[3] ‘Pseudo-’ (from Greek ψευδής, pseudes, "lying, false") is commonly used in creating new scientific names for a taxon that superficially appears to be a taxon, but actually is another.
• Benedenia Diesing, 1858 was a name created by the Austrian zoologist Karl Moriz Diesing in 1858 ^[4] to honour the Belgian helminthologist Pierre-Joseph van Beneden.

Lagenivaginopseudobenedenia, with 27 letters and 17 syllables, is possibly the longest valid generic name of the zoological nomenclature for a non-fossil organism.^{[1] [5]}

Hosts

Hosts of species of monogeneans of the genus Lagenivaginopseudobenedenia are parasitic on fish which are members of the genus Etelis (family Lutjanidae), found in deep-sea in the Pacific Ocean.

Species

Only two species are currently known in this genus.

• Lagenivaginopseudobenedenia etelis Yamaguti, 1966, parasite of the deep-water red snapper Etelis carbunculus off Hawaii^[2] and of the deepwater longtail red snapper Etelis coruscans off New Caledonia.^[6]
• Lagenivaginopseudobenedenia tinrowi Timofeeva, 1995^[7] parasite of the deep-water red snapper Etelis carbunculus in the Pacific Ocean (26°41' N, 135°22' E).

Notes and References

1. Whittington, I. D. 2004: The Capsalidae (Monogenea: Monopisthocotylea): a review of diversity, classification and phylogeny with a note about species complexes. Folia Parasitologica, 51, 109-122. PDF
2. Yamaguti S. 1966. New monogenetic trematodes from Hawaiian fishes, II. Pacific Science 20(4): 419-434. PDF
3. Johnston. T. Harvey. New Trematodes from the Subantarctic and Antarctic. Australian Journal of Experimental Biology and Medical Science. 8. 2. 1931. 91–98. 0818-9641. 10.1038/icb.1931.7. PDF
4. Karl Moriz Diesing, 1858. Revision der Myzhelminthen. Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe. Wien: K.-K. Hof-und Staatsdruckerei in Commission bei Karl Gerold's Sohn. BHL PDF
5. Web site: Mark Isaak. Wordplay: Long and Short Names . Curiosity of Zoological Nomenclature.
6. Justine . JL. . Beveridge . I. . Boxshall . GA. . Bray . RA. . Miller . TL. . Moravec . F. . Trilles . JP. . Whittington . ID. . An annotated list of fish parasites (Isopoda, Copepoda, Monogenea, Digenea, Cestoda, Nematoda) collected from Snappers and Bream (Lutjanidae, Nemipteridae, Caesionidae) in New Caledonia confirms high parasite biodiversity on coral reef fish. . Aquatic Biosystems . 8 . 1 . 22 . 2012 . 10.1186/2046-9063-8-22 . 22947621 . 3507714 . free . 2012AqBio...8...22J .
7. Timofeeva. T. A.. New species of the genera Pseudallobenedenia Yamaguti, 1966 and Lagenivaginopseudobenedenia Yamaguti, 1966 (Monogenea: Capsalidae) in the Indo-Pacific. Systematic Parasitology. 32. 1. 1995. 71–77. 0165-5752. 10.1007/BF00009469. 44047202 .