Robbea sp.

Scharhauser, Florian, Saavedra, Daniel E. M., Pröts, Philipp, Ot, Jörg A., Geier, Benedikt, Gruber-Vodicka, Harald R., Polikarpov, Maxim, Bourenkov, Gleb & Leisch, Nikolaus, 2025, Revision of the genus Robbea (Stilbonematinae: Desmodoridae), worldwide abundant marine nematodes with chromophoric Fe-Br inclusions and the description of a new stilbonematine genus, Zoological Journal of the Linnean Society 203 (1), pp. 1-28 : 11-12

Robbea sp. Great Barrier Reef

Sampling location: Lizard Island, Great Barrier Reef , Australia; intertidal, medium sand. Coordinates: 14.693 S, 145.460 E.

Material: Two male, one female specimens in the collection of J.A. Ott.

Description: With the characters of the genus, measurements see Supporting Information, Table S2 .

Small (L <= 6 mm) species ( Figure 17 ); the three specimens vary strongly in several measurements, e. g. a (150–180), relative length of subcephalic setae (40–60% of cephalic setae length), proportions of the pharynx divisions (corpus 27–38%, isthmus 45–60% of pharynx length).

Figures

Figure 17. Robbea sp. Great Barrier Reef. A, anterior end of male, surface view.B, anterior end of male, optical section.C, pharynx bulbus. D, spicular apparatus.E, symbiotic bacteria;on body surface.LM of preserved specimens.Abbreviations:bulbus, b; bacteria, bac; corpus, c; cephalic capsule, cc; cephalic seta, cs; fovea amphidialis,fa; gubernaculum, gb; isthmus, i; subcephalic seta, scs; muscles of the spicular apparatus, smu; spiculum, sp. Scale bars:A–D, 10 µm; E, 5 µm.