Faerlea, WESTBLAD, 1945 AND

Atherton, Sarah & Jondelius, Ulf, 2022, Phylogenetic assessment and systematic revision of the acoel family Isodiametridae, Zoological Journal of the Linnean Society 194, pp. 736-760 : 741

SYNONYMIZATION OF FAERLEA WESTBLAD, 1945 AND PROCONVOLUTA DÖRJES, 1968

Results from our phylogenetic analyses found Proconvoluta primitiva clearly nested in the Faerlea clade as sister to the new species Faerlea assembli ( Fig. 1 ). Dörjes (1968) separated Proconvoluta from Faerlea based on the seminal bursa, which is present in Proconvoluta , although small and difficult to distinguish in live specimens, and absent in species of Faerlea . Otherwise, the morphologies of the two genera generally overlap, in particular with the absence of rhabdoid glands and the heavily vacuolated parenchyma. Proconvoluta primitiva is the only species currently recognized for the genus, and so, based on the results of the phylogenetic analyses, Proconvoluta becomes a junior synonym of Faerlea .

Figures

Figure 1. Concatenated 28S, 18S and COI gene tree summary. Percent bootstrap values are given at each node. Sequences from six species of Isodiametridae and Actinoposthiidae represented only by 18S sequences downloaded from GenBank (Table S1) were excluded.