. A. Specimen from the Ebro River. Scale bar¼2cm. B. Detail of the inhalant siphon papillae in a live specimen. C. Ova in the water tubes of a female specimen. D. Glochidia of Spanish U. mancus. Scale bar¼200mm. E. Detail of the styliform hook. F. One-week-old U. mancus juveniles. Scale bar¼200mm.