Micrathena horrida (Taczanowski, 1873)

Acrosoma horridum Taczanowski, 1873: 281, fig. 31. Female holotype from Cayenne, French Guiana [4º55’N 52º19’W, 8m ASL], deposited in Polska Akademia Nauk, Warszawa, not examined.

Micrathena horrida, Levi 1985: 596, figs. 774–783; Platnick 2011 (complete synonymic list).

Micrathena mastonota Mello-Leitão 1940: 209 . Female holotype from Colatina, Espírito Santo, Brazil [19º31’S 40º37’W, 38m ASL], Mario Rosa coll., deposited in MNRJ 58345, examined. Levi 1985: 446 (nomen dubium). NEW SYNONYMY.

Synonymy. The holotype of M. mastonota was not available to Levi (1985) at the time of his revision and he regarded it as being lost. He could not identify the species from the original description and considered it as a nomen dubium, suggesting the possibility that it could be a synonym of M. triangularis . The type was located at MNRJ and is an adult female of M. horrida, with all the diagnostic characters of the species reported by Levi (1985: 598, figs. 774–780). This represents the first record of this species for the state of Espírito Santo, Brazil.