Pterobrycon myrnae Bussing, 1974 .

Semaphore Tetra, Myrna’s Tetra; Sardina, Sardinita, Tetra Semaforo, Sardinita de Myrna.

Distribution: Global: Middle America; southern Costa Rica, Pacific drainages; Costa Rica: Pi and Tr (Pacific), 10– 80 m.a.s.l., Pri, Pot.

Occurrence and conservation status: End, EN.

References: Bussing (1966: 215, as Gephyrocharax intermedius Meek & Hildebrand 1916 —missidentification; brief description and information on distribution), Bussing (1987: 89; 1998: 113; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology) and Angulo et al. (2013: 992; listed, including taxonomic information and distributional data).