Pomphorhynchus laevis

Reier, Susanne, Sattmann, Helmut, Schwaha, Thomas, Harl, Josef, Konecny, Robert & Haring, Elisabeth, 2019, An integrative taxonomic approach to reveal the status of the genus Pomphorhynchus Monticelli, 1905 (Acanthocephala: Pomphorhynchidae) in Austria, International Journal for Parasitology: Parasites and Wildlife 8, pp. 145-155 : 148

3.1.1. Pomphorhynchus laevis

Juvenile specimens obtained from Alburnoides bipunctatus (Bloch, 1782) of the river Sulm (Styria) were identified as P. laevis . Four specimens were examined under the light microscope since the hooks exhibited no autofluorescence in the confocal scans. They had a cylindrical proboscis with twelve hooks per row. The 3- D reconstruction of one specimen emphasized the assignment to the species P. laevis since no extensions on the basal hooks of the proboscis were visible as it was described by Meyer (1933) and Špakulová et al. (2011) ( Fig. 2 C, F). The anterior and basal hooks exhibit long hook roots ( Fig. 2 C). The furcation of the basal roots described by Meyer (1933) could not be confirmed in the 3- D reconstruction since the thicker outer parts are interconnected by a very thin matrix. Also, the basal circle of hooks is located on the posterior part of the proboscis as it is known for P. laevis ( Meyer, 1933; Špakulová et al., 2011; Hohenadler et al., 2017). Overall, 17 longitudinal rows of hooks were counted.