Systematics of the family Ariidae (Ostariophysi, Siluriformes), with a redefinition of the genera. Author Alexandre P. Marceniuk Author Naércio A. Menezes text Zootaxa 2007 1416 1 126 http://www.zoobank.org/urn:lsid:zoobank.org:pub:FFC65592-D8DB-41BE-AEAC-A41EAB6C6185 journal article z01416p001 Aspistor parkeri (Traill, 1832) Silurus parkeri Traill, 1832: 380, pl. 6 (fig.1). Type locality: Guiana . Holotype: Unknown. Arius quadriscutis Valenciennes in Cuvier & Valenciennes, 1840b: 111. Type locality: Surinam . Syntypes : MNHN A-9402 , B-0596 , B-0613 ; RMNH 3049 , 3050 . Distribution: North Eastern South America. Countries: Guyana, Surinam, French Guiana and Brazil. Habitat: Marine and brackish waters. Maximum size: 500 mm TL. Material examined: FMNH 52850 (5 al, 282-305 mm TL), Guyana , Georgetown market ; MZUSP 87697 (1 c&s), Brazil , Sergipe ; MZUSP 87698 (1 c&s), Brazil , Sergipe ; MZUSP 52840 (1 al), Brazil , Maranhao , Sao Luis , ilha de Sao Luis , rio Curuca .