Robbea lotti, Scharhauser & Saavedra & Pröts & Ot & Geier & Gruber-Vodicka & Polikarpov & Bourenkov & Leisch, 2025

Robbea lotti sp.nov.

ZooBank registration: http://zoobank.org: urn:lsid:zoobank.org:act:35EFD783-FDBC-4C54-B9B7-DDE69CABA765 .

Type location: Bay of Sant’ Andrea   GoogleMaps , Elba, Italy; subtidal sand in 5–6 m depth. Coordinates: 42.808342 N, 10.141764 E.

Type material: One holotype ( NHMW-ZOO-EV-M-5869 ), GoogleMaps three paratypes female ( NHMW-ZOO-EV-M-5870/1-3 ). Collection date: April 2016. Collector: F. Scharhauser. GoogleMaps

Etymology: The species is dedicated to Christian Lott, scientist and underwater film-maker at the Hydra Marine Station, Elba.

Description: With the characters of the genus. Measurements see Supporting Information, Table S2 View Table 2 .

Shorter (L <7mm) and stouter than the foregoing species ( Figures 8 View Figure 8 and 9 View Figure 9 ). Cephalic capsule long, extending over>60% of corpus. Corpus about 25% of pharynx length, isthmus short with 47–54%, bulbus large, round, occupying one-fifth of the pharynx. Cuticle finely striated, striae 0.6µm wide. Vulva distinctly cuticularized, but less so than in the forgoing species. Tail conical with a distinctly ‘pipette’-shaped tip. Symbiotic bacteria rods, 3 × 1.5 µm.