Sidyma Simon, 1895 (preoccupied by Sidyma Walker, 1856)
Sidymella is a genus of spider in the family Thomisidae, found in South America, Australia and New Zealand.[1] It was originally named Sidyma, but this was later found to have been used already for a genus of moths.
The genus was first erected by Eugène Simon in 1895 under the name Sidyma, with the type speciesSidyma lucida. However, it was later discovered that there was a moth genus Sidyma, named in 1856, so the genus name was preoccupied. The replacement name Sidymella was provided by Strand in 1942.[2][3]