Description of the female of Melloina gracilis (Schenkel, 1953) (Mygalomorphae: Theraphosidae) with comments on the familial placement of Melloina

Victoria Emilia Goloboff-Szumik, Duniesky Ríos Tamayo


The female of Melloina gracilis (Schenkel, 1953), a species previously known only from males, is described. This is the second species of the genus known from both sexes. Detailed morphological description and figures of the female specimen are presented. A reanalysis of Mori & Bertani, 2020 matrix is done and some comments about the familial placement of the genus Melloina Brignoli, 1985 are made.

Palabras clave

Melloina gracilis; Taxonomía; Theraphosidae; Paratropididae; Venezuela

Texto completo:

PDF (English)


Bertani, R. 2013. A new species of Melloina (Araneae: Paratropididae) from Venezuela. Zoologia 30(1): 101–106.

Brignoli, P.M. 1985. On some generic homonymies in spiders. Bulletin of the British Arachnological Society 6: 380.

Coyle, F.A. 1974. Systematics of the trapdoor spider genus Aliatypus (Araneae: Antrodiaetidae). Psyche, Cambridge 81: 431–500.

Goloboff, P.A. 1993. A reanalysis of mygalomorph spider families (Araneae). American Museum Novitates 3056: 1–32.

Goloboff, P.A. 1995. A revision of the South American spiders of the family Nemesiidae (Araneae, Mygalomorphae). Part 1: species from Perú, Chile, Argentina and Uruguay. Bulletin of the American Museum of Natural History 224: 1–189.

Hedin, M. & Bond, J. E. 2006. Molecular phylogenetics of the spider infraorder Mygalomorphae using nuclear rRNA genes (18S and 28S): conflict and agreement with the current system of classification. Molecular Phylogenetics and Evolution 41(2): 454–471. doi:10.1016/j.ympev.2006.05.017

Mori, A. & Bertani, R. 2020. Revision and cladistic analysis of Psalistops Simon, 1889, Trichopelma Simon, 1888 and Cyrtogrammomma Pocock, 1895 (Araneae: Theraphosidae) based on a cladistic analysis of relationships of Theraphosidae, Barychelidae and Paratropididae. Zootaxa 4973(1): 001–132.

Opatova, V., Hamilton, C.A., Hedin, M., Montes de Oca, L., Král, J. & Bond, J. E. 2020. Phylogenetic systematics and evolution of the spider infraorder Mygalomorphae using genomic scale data. Systematic Biology 69(4): 671–707. doi:10.1093/sysbio/syz064

Raven, R. J. 1985. The spider infraorder Mygalomorphae (Araneae): cladistics and systematics. Bulletin of the American Museum of Natural History 182: 1–180.

Raven, R. J. 1999. Review of the mygalomoprh genus Melloina Brignoli (Paratropididae: Araneae). Memoirs of the Queensland Museum 43(2): 819–825.

Schenkel, E. 1953. BerichtubereinigeSpinnentiere aus Venezuela. Verhandlungen der Natur forschenden Gesselschaft in Basel, 65: 1–57.

World Spider Catalog. 2022. World Spider Catalog. Version 23.0. Natural History Museum Bern, online at, accessed on Apr 18, 2022. doi: 10.24436/2

Enlaces refback

  • No hay ningún enlace refback.

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.