Hygromia sp.

Hygromia sp. – PAL

( Fig. 12)

Te description refers to the phylogenetic clade whose taxonomic status cannot be resolved based on the current data. Te picture seems to be more complicated as it consists of two well-supported subclades which may in fact represent independent evolutionary taxonomic units, located in the geographically distant French departments of Pyrénées-Atlantiques and Landes (Supporting Information, Table S1; Fig. 1).

Description

Shell width 13.5–17.1 mm, shell height 10.2–13.9 mm, whorls 6.25–6.6. Other measurements are presented in Table 1. Shell shape globose-conical. Convex spire with whorls separated by very weak suture. Last whorl angulated with pale band. Aperture largely oblique with light lip. Umbilicus partly (75% cases) or completely covered by reflected columellar margin. Sculpture in a form of strongly developed ridges on the upper side, on the lower side variously developed ( Fig. 18). Love dart was absent in all four adults available for dissection. Shell and genitalia features are presented in Table 2.

Habitat

Found in a fairly moist lowland environment with different degrees of shading. Te Rébénacq site is well lit and stretches along the river and roadside bushes, with the most dominant plants being Rubus sp. and Urtica dioica , with light and moisture-loving species such as Filipendula ulmaria and Mentha suaveolens . Te Hastingues site (Supporting Information, Fig. S13) is northerlyexposed, located under the canopy of Quercus sp. trees, with undergrowth species that prefer damp places, including Ranunculus repens , Hedera helio , and Clematis vitalba . Both habitats are moderately influenced by humans, with the typical ruderal plant species Picris hieracioides present.