A new spider genus (Araneae: Linyphiidae: Erigoninae) from a tropical montane cloud forest of Mexico

  • Guillermo Ibarra-Núñez El Colegio de la Frontera Sur, Unidad Tapachula. Carretera Antiguo Aeropuerto km 2.5, Apdo. Postal 36, Tapachula, Chiapas 30700, Mexico. https://orcid.org/0000-0003-2042-425X
  • David Chamé-Vázquez El Colegio de la Frontera Sur, Unidad Tapachula. Carretera Antiguo Aeropuerto km 2.5, Apdo. Postal 36, Tapachula, Chiapas 30700, Mexico.
  • Julieta Maya-Morales El Colegio de la Frontera Sur, Unidad Tapachula. Carretera Antiguo Aeropuerto km 2.5, Apdo. Postal 36, Tapachula, Chiapas 30700, Mexico.
Keywords: Chiapas, cloud forest understory, systematics, taxonomy


A new genus and species of spider (Araneae, Linyphiidae, Erigoninae) from a tropical montane cloud forest of Mexico is described from both male and female specimens, Xim trenzado gen. et sp. nov. A phylogenetic parsimony analysis situates Xim gen. nov. as a distinct genus among the distal Erigoninae. Xim gen. nov. is sister to a clade including Ceratinopsis, Tutaibo and Sphecozone, but differs from those genera by having a high cymbium, large paracymbium, short straight embolus, male cheliceral stridulatory striae widely and evenly spaced, both sexes with a post-ocular lobe, male with two series of prolateral macrosetae on femur I, and the female by having strongly oblong, u-shaped spermathecae.


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How to Cite
Ibarra-Núñez, G., Chamé-Vázquez, D., & Maya-Morales, J. (2021). A new spider genus (Araneae: Linyphiidae: Erigoninae) from a tropical montane cloud forest of Mexico. European Journal of Taxonomy, 731(1), 97–116. https://doi.org/10.5852/ejt.2021.731.1207
Research article