Included taxa
Mello-Leitão, C. F. de (1946c). Nuevos aracnidos sudamericanos de las colecciones del Museo de Historia Natural de Montevideo. Comunicaciones Zoologicas del Museo de Historia Natural de Montevideo 2(35): 1-10. 
Species
| Species | Family | Page / figures | published as |
|---|---|---|---|
| Ashtabula cuprea | Salticidae | 9 (Dm) | Ashtabula cuprea |
| Homoeomma uruguayense | Theraphosidae | 7, f. 10-11 (Dm) | Hapalotremus uruguayensis |
| Idiops clarus | Idiopidae | 6, f. 6-9 (Dm) | Juambeltzia clara |
| Pycnothele auripila | Pycnothelidae | 8, f. 12 (Dm) | Psalistops auripilus |
Genera
| Genus | Family | Page |
|---|---|---|
| Juambeltzia Mello-Leitão, 1946 | Idiopidae | 6 |