Description of the male of the spider Eustala vellardi Mello-Leitão, 1924,the female of E. delasmata Bryant, 1945 and seven species of Eustala Simon, 1895 declared as nomina dubia (Araneae, Araneidae).

The male of Eustala vellardi Mello-Leitão, 1924 and the female of E. delasmata Bryant, 1945 are described for the first time and new distribution records are provided. The types of E. tridentata (C.L. Koch, 1838), E. tristis (Blackwall, 1862), E. essequibensis (Hingston, 1932), E. uncicurva Franganillo, 1936, E. nigerrima Mello-Leitão, 1940, and E. albicans (Caporiacco, 1954), are apparently lost, and those names are therefore, considered nomina dubia. Eustala andina Chamberlin, 1916, which is based on an immature female is also considered a nomen dubium.