Riccardoella limacum infesting a snail

Taxonavigation

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Taxonavigation: Tydeoidea 

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Chelicerata
Classis: Arachnida
Subclassis: Acari
Superordo: Acariformes
Ordo: Trombidiformes
Subordo: Prostigmata
Cohort: Eupodina
Superfamilia: Tydeoidea

Familia: Ereynetidae
Subfamilia: Riccardoellinae
Tribus: Riccardoellini
Genus: Riccardoella
Subgenera (2): R. (Riccardoella) – R. (Proriccardoella)

Overview of species (7): R. canadensis – R. limacum – R. novaezealandiae – R. oudemansi – R. reaumuri – R. tokyoensis – R. zadielensis

Name

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Riccardoella Berlese, 1923

  • Original status: valid subgenus
  • Gender: feminine
  • Type species: Acarus limacum Schrank, 1776

Notes

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  • Riccardoella was erected by Berlese, 1923 as subgenus of Micrereunetes and characterized by triarticulate palps.
  • The subgenus was raised to full genus rank by Thor (1929).
  • Fain & Van Goethem (1986) divided the genus Riccardoella into two subgenera, the nominal subgenus with a single species (R. limacum) and Proriccardoella with 3 species.
  • For species identification, see also Waki & Shimano (2023).

References

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Primary references

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  • Berlese, A. 1923. Centuria sesta di Acari nuovi.I. Prostigmata. Redia 15: 242–246.
  • Fain, A. & Van Goethem, J.L. 1986, Les acariens du genre Riccardoella Berlese, 1923 parasites du poumon de mollusques gastéropodes pulmonés terrestres. Acarologia 27: 125–140.
  • Schrank, F. von P. 1776. Beyträge zur Naturgeschichte. Augsburg, Veith. 140 p., pls 1-7.
  • Thor, S. 1929. Über die Phylogenie und Systematik der Acarina, mit Beiträgen zur ersten Entwicklungsgeschichte einzelner Gruppen. Nyt magazin for naturvidenskaberne 67: 145.
  • Waki, T. & Shimano, S. 2023. Snail mites of the genus Riccardoella in Japan. Taxa, Proceedings of the Japanese Society of Systematic Zoology 54: 3–10. [in Japanese]

Additional references

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  • Barker, G.M. & Ramsay, G.W. 1978: The slug mite Riccardoella limacum (Acari: Ereynetidae) in New Zealand. New Zealand entomologist 6(4). 441–443. PDF
  • Sirvid, P.J. et al. 2010. [Chapter] SIX Phylum ARTHROPODA CHELICERATA horseshoe crabs, arachnids, sea spiders. Pp. 50-89 in Gordon, D.P. (ed.): New Zealand inventory of biodiversity. Volume 2. Kingdom Animalia. Chaetognatha, Ecdysozoa, ichnofossils. Canterbury University Press, Christchurch, New Zealand. ISBN 978-1-87725793-3