What is "masteria"

Masteria is a genus of mygalomorph spiders that occurs in the tropics of Central to South America, Asia and Micronesia, with one species found in Australia. It was formerly known as genus Accola.

The males of M. petrunkevitchi are 4 mm long, females 5 mm. In M. lewisi, M. barona and M. downeyi, which are slightly smaller, only six eyes can be found.