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The First Report of a Water Mite Unionicola (Trombidiformes: Unionicolidae) Infection in Filopaludina spp. (Gastropoda: Viviparidae) from Thailand with a Description of a New Species of Unionicola ( Polyatax ) kasetbangkhenensis sp. nov.

Phuphitchan RachprakhonPoramad TrivalairatKrittiya TrivalairatPichit WiroonpanWatchariya Purivirojkul
Published in: Animals : an open access journal from MDPI (2024)
Two species of gastropods, Filopaludina sumatrensis polygramma and F. martensi martensi , were found infested with water mites of the genus Unionicola in Bangkok and Nonthaburi provinces, Thailand. Morphological studies on these water mites, based on the characteristics of their genital acetabular and female genital fields, identified them as a new member of subgenus Polyatax . Unionicola ( Polyatax ) kasetbangkhenensis sp. nov. was named after the first location where this parasitic water mite was discovered. This species is distinguished from others by the pattern of their female genital field, with their anterior acetabular plates each bearing two acetabula and a short thick spine on the inner margin. Additionally, it differs from other species by the structure of the spines in its pedipalps and legs, as well as in the shapes of its coxal plates.
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