Phronimopsis spinifera

Tump, Marloes, Vonk, Ronald, Burridge, Alice K., Beentjes, Kevin K., Goetze, Erica & Peijnenburg, Katja T. C. A., 2025, Genetic diversity of hyperiid amphipods along a meridional transect in the Atlantic Ocean, Contributions to Zoology 94 (3), pp. 261-291 : 278

Phronimopsis spinifera

The only member of the genus Phronimopsis , P. spinifera , differs markedly from other genera in the family Lestrigonidae in the unique structure of pereopod #2 (P2) and the phronimid-look of females ( Claus 1879). The 17 CO1 sequences obtained from P. spinifera specimens were separated into two OTU s ( table 1, fig. 4 ). The genetic distance between the clades was 13.6% and ranged from 0 to 4% within clades (table S4). Phronimopsis spinifera A (N = 4) was restricted to the meso- trophic tropical regions of the Atlantic, while P. spinifera B (N = 13) occurred mostly in both the North and South oligotrophic subtropical gyres.

Figures

FIGURE 4 Phylogenetic analysis of Phronimopsis spinifera. A) Maximum likelihood tree based on CO1 sequences showing relationships for clades A and B identified by ABGD analysis. Bootstrap values>80% are indicated with an asterisk (*). B) Specimen lateral views (scale bar is 1 mm). C) Map showing collection locations, with Longhurst oceanic provinces marked by symbols and abbreviations (see also fig.1 and table 1).