Gibbocarina, Anush Kosakyan, Daniel J. G. Lahr, Matthieu Mulot, Ralf Meisterfeld, Edward A. D. Mitchell & Enrique Lara, 2016

Anush Kosakyan, Daniel J. G. Lahr, Matthieu Mulot, Ralf Meisterfeld, Edward A. D. Mitchell & Enrique Lara, 2016, Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes, Cladistics 32, pp. 606-623 : 621

Gibbocarina gen. nov. Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara

Description. Test elongated-pyriform, with the lateral sides tapering towards the pseudostome, with a hollow tuberous keel surrounding the entire posterior end of the test. Test hyaline or slightly yellowish, composed of circular to elongated shell plates, probably recycled from euglyphid testate amoeba prey.

Differential diagnosis. Members of this genus differ from those in the genus Nebela by the strongly elongated shape of the test, the presence of a hollow keel and in most cases a larger size. From the members of Longinebela , they differ mainly by the presence of a keel. Gibbocarina may be confused with Planocarina , although in the latter the keel is flat, while in Gibbocarina it is hollow (the difference is very obvious when seen in profile).

Type species. G. galeata ( Penard, 1890) Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara comb. nov.

Included taxa. Nebela galeata Penard 1980 , and the similar taxon G. gracilis Penard 1910 .

Etymology. The name of this genus derives from Latin words “gibba” and “carina”, meaning tuberous, hollow keel, the characteristic trait for members of the genus.