Included taxa
Mello-Leitão, C. F. de (1931c). Notas sobre arachnidos argentinos. Anais da Academia Brasileira de Ciências 3: 83-97. 
Species
| Species | Family | Page / figures | published as |
|---|---|---|---|
| Metaltella iheringi | Desidae | 94 (Df) [urn:lsid:nmbe.ch:spidersp:060173] | Metaltella argentinensis |
| Micrathena swainsoni | Araneidae | 95 (Df) | Micrathena paraguayensis |
| Tetragnatha argentinensis | Tetragnathidae | 95, f. 1-3 (Dmf) | Tetragnatha argentinensis |
| Uraarachne runcinioides | Thomisidae | 96 (Df) [urn:lsid:nmbe.ch:spidersp:030381] | Erissoides argentinus |
Genera
| Genus | Family | Page |
|---|---|---|
| Metaltella Mello-Leitão, 1931 | Desidae | 94 |