Cyrtosternum meridionalis Keyserling, 1891: 6.
Cyrtopholis meridionalis – Petrunkevitch 1911: 58. — Mello-Leitão 1926: 4.
Metriopelma meridionalis – Mello-Leitão 1923: 170.
Keyserling (1891) described Cyrtosternum meridionalis based on a female from Taquara do Mundo Novo (nowadays Taquara), state of Rio Grande do Sul, Brazil, and did not mention where the holotype was deposited. Mello-Leitão (1923) translated the original text and transferred the species to Metriopelma Becker, 1878 with no further explanation. Later, Mello-Leitão (1926) transferred the species to Cyrtopholis. The original description ( Keyserling 1891) does not allow an identification of the species, and the holotype supposedly in The Natural History Museum of London could not be located. Therefore, as the record in southern Brazil for this species is out of the distribution range of Umbyquyra gen. nov., Cyrtopholis meridionalis is herein considered as a nomen dubium.