The genus Cunea Kudryavtsev and Pawlowski, 2015 (Amoebozoa, Dactylopodida) was initially described from the oceanic benthos: C. profundata, from over 5 km depth in the Atlantic Ocean, and C. thuwala from the Red Sea benthos at ca. 60 m depth. Both species are identical to each other in morphology (including cell coat ultrastructure), but differ significantly in the gene sequence data, including barcoding loci of small subunit ribosomal RNA and cytochrome oxidase subunit 1 gene, as well as actin. This paper describes the third species of Cunea, C. russae n. sp. isolated from a brackish water habitat without a direct connection to the ocean, a small spring of brackish water (19‰) emerging from a 246 m deep hole in the earth. This species is morphologically identical to the previous two amoebae, but differs from them significantly in the gene sequence data and ecological preferences. In particular, this species has the broadest salinity tolerance range, being able to reproduce well already at 2.5‰. It is also capable of resisting cold temperatures, like C. profundata. The data obtained suggest that the genus Cunea may comprise a significant taxonomic diversity represented by morphologically identical, but quickly diverging species with significant ecological plasticity.

属美国白蛾库德里亚夫采夫和Pawlowski的，2015年（变形虫，Dactylopodida）最初从海洋底栖生物描述：Ç。profundata，距离超过5公里的深度在大西洋和Ç。来自红海底栖生物的图瓦拉 深度60 m。两种物种在形态（包括细胞膜超微结构）方面彼此相同，但是在基因序列数据上有显着差异，包括小亚基核糖体RNA和细胞色素氧化酶亚基1基因的条形码基因以及肌动蛋白。本文介绍的第三个物种美国白蛾，Ç。俄罗斯。sp。与咸淡水栖息地隔离，与海洋没有直接联系，从地球上一个246 m深的洞中涌出了少量咸淡水（19‰）。该物种在形态上与前两个变形虫相同，但是在基因序列数据和生态偏好方面与它们明显不同。特别是，该物种具有最宽的盐度耐受范围，能够以2.5‰很好地繁殖。它还能够抵抗低温（例如C）。profundata。所获得的数据表明，豚鼠属可能包含显着的分类学多样性，以形态上相同但迅速发散的物种具有显着的生态可塑性。