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Included taxa
Mello-Leitão, C. F. de (1940b). Arañas de la provincia de Buenos Aires y de las gobernaciones de La Pampa, Neuquén, Río Negro y Chubut. Revista del Museo de La Plata (N.S.,Zool.) 2: 3-62. 
Species
| Species | Family | Page / figures | published as |
|---|---|---|---|
| Acanthogonatus notatus | Pycnothelidae | 4, f. 1-5 (Dm) | Chubutia notata |
| Aglaoctenus oblongus | Lycosidae | 28 | Diapontia oblonga |
| Alopecosa restricta | Lycosidae | 23, f. 21 (Df) | Alopecosa restricta |
| Coptoprepes variegatus | Anyphaenidae | 60, f. 61-62 (Dm) | Coptoprepes variegatus |
| Cybaeodamus enigmaticus | Zodariidae | 29, f. 31-32, pl. I, f. 3 (Dm) | Hyltoniella birabeni |
| Dendryphantes madrynensis | Salticidae | 56, f. 56-57 (Df) | Dendryphantes madrynensis |
| Dendryphantes patagonicus | Salticidae | 56, f. 55 (Df) | Euophrys tristis |
| Echemoides argentinus | Gnaphosidae | 44, f. 42 (Df) | Echemus argentinus |
| Echemoides argentinus | Gnaphosidae | 45, f. 43 (Dmf) | Echemus pampeanus |
| Falconina gracilis | Corinnidae | 54, pl. 1, f. 2 (f) | Corinna vertebrata |
| Geolycosa lancearia | Lycosidae | 24, f. 22 (Dm) | Lycosa lancearia |
| Herpyllus australis | Gnaphosidae | 46, f. 44-45 (m, Df) | Herpyllus australis |
| Hogna nigrosecta | Lycosidae | 26, f. 25-27 (Dmf) | Lycosa nigrosecta |
| Latrodectus curacaviensis | Theridiidae | 35, f. 33, pl. I, f. 4 (Dmf) | Latrodectus foliatus |
| Lihuelistata metamerica | Filistatidae | 7, pl. 1, f. 1 (Df) | Filistata metamerica |
| Lycosa leucophthalma | Lycosidae | 25, f. 23-24 (Df) | Lycosa leucophthalma |
| Meriola arcifera | Trachelidae | 52, f. 51 (Dm) | Ceto costulata |
| Meriola hyltonae | Trachelidae | 53, f. 52-53 (Df) | Ceto hyltonae |
| Meriola hyltonae | Trachelidae | 51, f. 50 (Df) | Trachelopachys gulosus |
| Mesabolivar tandilicus | Pholcidae | 9, f. 10-12 (Dmf) | Litoporus tandilicus |
| Metaltella imitans | Desidae | 15, f. 15-16 (Dm) | Amaurobius imitans |
| Metaltella rorulenta | Desidae | 17, f. 17 (Dmf) | Amaurobius illudens |
| Moreno morenoi | Gnaphosidae | 47, f. 46-49 (Df) | Moreno morenoi |
| Negayan paduana | Anyphaenidae | 61, f. 63-64 (f) | Tomopisthes lebruni |
| Negayan tridentata | Anyphaenidae | 58, f. 59-60 (Dm) | Gayenna exigua |
| Neomaso pollicatus | Linyphiidae | 37, f. 35-36 (Df) | Microneta maculata |
| Neuquenia pallida | Amaurobiidae | 13, f. 14 (Df) | Neuquenia pallida |
| Ocrepeira venustula | Araneidae | 38 (Tmf from Araneus) | Parawixia venustula |
| Parawixia audax | Araneidae | 38 (Tmf from Verrucosa) | Parawixia audax |
| Rubrius scottae | Amaurobiidae | 19 (Df) | Rubrius scottae |
| Sanogasta bonariensis | Anyphaenidae | 58, f. 58 (Df) | Gayenna bonariensis |
| Saphrys a-notata | Salticidae | 55, f. 54 (Df) | Euophrys a-notata |
| Sicarius rupestris | Sicariidae | 8, f. 8 (m) | Thomisoides patagonicus |
| Sicarius rupestris | Sicariidae | 9, f. 9 (Df) | Thomisoides irregularis |
| Sicarius rupestris | Sicariidae | 8, f. 6-7 (Dm) | Thomisoides rupestris |
| Sphecozone diversicolor | Linyphiidae | 15 (Tmf from Erigone where "nicht zu deuten!" per Roewer) | Ceratinopsis diversicolor |
| Steatoda sabulosa | Theridiidae | 36, f. 34, pl. I, f. 5 (Df) | Steatoda albiornata |
| Tandil nostalgicus | Dictynidae | 12, f. 13 (Df) | Tandil nostalgicus |
| Tomopisthes horrendus | Anyphaenidae | 42, f. 40-41 (Df) | Nonianus argentinus |
| Trochosa presumptuosa | Lycosidae | 28, f. 28-30 (Dm) | Lycosa presumptuosa |
| Xenoctenus pampeanus | Xenoctenidae | 39, f. 37-38 (Dm) | Xenoctenus pampeanus |
| Xenoctenus patagonicus | Xenoctenidae | 40, f. 39 (Dj) | Xenoctenus patagonicus |
Genera
| Genus | Family | Page |
|---|---|---|
| Moreno Mello-Leitão, 1940 | Gnaphosidae | ? |
| Neuquenia Mello-Leitão, 1940 | Amaurobiidae | ? |
| Tandil Mello-Leitão, 1940 | Dictynidae | ? |