Comprehensive DescriptionRead full entry
Type species: Loricaria variegata Steindachner, 1879 ZBK .
Holotype : NMW 45138 , Panama , Rio Mamoni drainage at Chepo .
The species of this genus are distributed in the northwestern part of the South-American continent along the Pacific slope (in Panama and Columbia), Lake Maracaibo region (Venezuela), and the upper Amazon system (Peru). Like other representatives of the Pseudohemiodon ZBK group, Crossoloricaria ZBK species occur over sandy substrates of larger rivers and their tributaries. Sexual dimorphism is unknown but males are abdomino-lip brooders. Crossoloricaria ZBK is poorly diagnosed and is in need of revision. Its only diagnostic character (incomplete abdominal cover consisting of a double median row of plates) is shared by two other representatives of the Pseudohemiodon ZBK group, Apistoloricaria ZBK and Rhadinoloricaria ZBK . Rapp Py-Daniel (1997) suggested the synonymy of Apistoloricaria ZBK and Crossololoricaria ZBK with Rhadinoloricaria ZBK , but the structure of the lips and the length of the maxillary barbels tend to place Crossoloricaria ZBK closer to Pseudohemiodon ZBK . Moreover, Crossoloricaria rhami ZBK , described by Isbrücker & Nijssen (1983), like Pseudohemiodon ZBK possesses complete abdominal plate development, thus rendering the diagnostic feature of Crossoloricaria ZBK invalid. Five valid species are currently recognized in this genus (Ferraris 2003).