Contributions to the taxonomy of the long-jawed orb-weaving spider genus Tetragnatha (Araneae, Tetragnathidae) in the Neotropical region, with comments on the morphology of the chelicerae Author Castanheira, Pedro de Souza Author Baptista, Renner Luiz Cerqueira Author Pizzetti, Daniela Dos Passos Author Teixeira, Renato Augusto text Zoosystematics and Evolution 2019 95 2 465 505 http://dx.doi.org/10.3897/zse.95.36762 journal article http://dx.doi.org/10.3897/zse.95.36762 1860-0743-2-465 61A44D725E9B40C6944027E395110DE8 EB091FB3C24E545B8A9A6D89F3602925 Tetragnatha major Holmberg, 1876 and Tetragnatha riparia Holmberg, 1876 Remarks. Tetragnatha major and T. riparia were described by Holmberg (1876) , but the original descriptions are very short, without any suitable characters to correctly diagnose the species. There is a lack of illustrations and no type materials are specified because Holmberg did not collect the specimens he described. No specimens labeled as types of either species were found in MACN during our visit to that collection; Galiano and Maury (1979) had previously determined this. Despite the lack of information on these two species, both were subsequently reported from many localities from Argentina (e.g. Mello-Leitao 1941, 1942). However, we re-examined many of these specimens at the MACN and MNRJ and they belong to either T. argentinensis or T. nitens . Therefore, we treat both species as nomina dubia.