Acineta tuberosa Ehrenberg, 1833

Ramírez-Ballesteros, Mireya & Mayén-Estrada, Rosaura, 2019, Suctorians (Ciliophora: Suctoria) as epibionts of decapods of families Cambaridae and Pseudothelphusidae, Zootaxa 4648 (2), pp. 384-392 : 388-389

Acineta tuberosa Ehrenberg, 1833

The body is inverted pyramid-shaped and has two actinophores with six tentacles in each fascicle; the stalk is rigid with a prominent basal disc; the macronucleus is spherical, and it is situated in the central part of the body; there is a single contractile vacuole located above the macronucleus.

Known previous records. Acineta tuberosa has been recorded as an epibiont of several crustacean groups. Has been reported on Cambarellus ( Cambarellus) zempoalensis Villalobos, 1943 (cited as Cambarellus montezumae zempoalensis ) ( Cambaridae ) in Lake Zempoala, Morelos, Mexico ( López-Ochoterena & Ochoa-Gasca 1971), in the crayfish Cambarellus ( Cambarellus) patzcuarensis Villalobos, 1943 (cited as Cambarellus patzcuarensis ) ( Cambaridae ) in Lake Pátzcuaro, Michoacán, Mexico ( Mayén-Estrada & Aladro-Lubel 1998), on the shrimps Penaeus aztecus Ives, 1891 (cited as Farfantepenaeus aztecus ) (Vidal-Martínez et al. 2002), and P. duorarum Burkenroad, 1939 (cited as Farfantepenaeus duorarum ) in Celestún and Sisal, Yucatán, Mexico (Vidal-Martínez et al. 2002; López-Téllez et al. 2009).

It has also been recorded on Gammarus locusta (Linnaeus, 1758) , G. pulex (Linnaeus, 1758) , Gammarus sp., Corophium sp., Asellus sp., Idotea balthica (Pallas, 1772) , Idotea sp., Microcerberus remyi Chappuis, 1953 , Microcerberus sp., Pontastacus leptodactylus (Eschscholtz, 1823) (cited as Astacus leptodactylus ), and on Crangon sp. ( Matthes & Guhl 1973; Curds 1985a; Fernandez-Leborans & Tato-Porto 2000). Dovgal (2013) reported this suctorian on Cercopagis pengoi (Ostroumov, 1891) , Gammarus sp., Diogenes pugilator (Roux, 1829) , Pontastacus leptodactylus (cited as Astacus leptodactylus ), Brachynotus sexdentatus (Risso, 1827) , Idotea balthica and on Palaemon elegans Rathke, 1837 .