Phylogenetic position of African Vitrinidae: Old family groups unraveled

Pfarrer, Beat; Rowson, Ben; Tattersfield, Peter; Neubert, Eike (2021). Phylogenetic position of African Vitrinidae: Old family groups unraveled. Journal of zoological systematics and evolutionary research, 59(6), pp. 1190-1208. Wiley 10.1111/jzs.12502

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A phylogenetic investigation of genera and species of the semislug family Vitrinidae
from Europe, East Africa, Arabia, and Macaronesia is presented. Two mitochondrial
markers (COI & 16S) and a set of nuclear markers (H3 & ITS2) were used in maximum
likelihood (ML) and Bayesian inference (BI) analyses. The synopsis of DNA sequence
data and anatomical data provide a first insight into the phylogenetic relationships of
these groups. The existence of major groups comprising European, Macaronesian, and
Arabian-African genera is proven, however, their relationship remains unresolved. The sister-group relationship between the Macaronesian radiation and a newly discovered East African genus Sanettivitrina nov. gen., perhaps a relic of this radiation, is demonstrated. The separation of the remaining East African Vitrinidae into two clades as
hypothesized by earlier authors, viz. Arabivitrina Thiele, 1931 and Calidivitrina Pilsbry,
1919 could not be confirmed. The hitherto used generic definitions based on genital
morphology are not able to explain the existence of at least five lineages in East
Africa. Apparently, Arabivitrina and Calidivitrina morphotypes experienced several
parallel losses of genital organ appendices.

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