Systematics of the Aliatypus erebus Group (Mygalomorphae, F. Antrodiaetidae): Exploring a Possible Ring of Species Around the California Central Valley (Full Text Dissertation or Thesis)

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  Systematics of the Aliatypus erebus Group (Mygalomorphae, F. Antrodiaetidae): Exploring a Possible Ring of Species Around the California Central Valley (Full Text Dissertation or Thesis) The Aliatypus erebus group represents a monophyletic radiation of trapdoor spiders with a ring-like distribution around California's Central Valley, shaped by long-term geological events and exhibiting substantial cryptic diversity and geographic structuring. Additional topics discussed include: Phylogenomic methods using ultra conserved elements (UCE) Impact of tectonic activity and fault systems on species diversification Cryptic speciation and species delimitation in low-dispersal arthropods Hays, T. G. (2026).  Systematics of the aliatypus erebus group (mygalomorphae, F. antrodiaetidae): Exploring a possible ring of species around the california central valley  (Order No. 32582807). Available from ProQuest Dissertations & Theses Global. (3330504647). https://www.proquest.com/dis...

First report of an ocular anomaly in Cyclosternum Ausserer, 1871 (Araneae: Theraphosidae) from Ecuador

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First report of an ocular anomaly in Cyclosternum Ausserer, 1871 (Araneae: Theraphosidae) from Ecuador

Abstract
We report for the first time an ocular anomaly in a spider of the genus Cyclosternum Ausserer, 1871 (Theraphosidae), housed in the wet collection of the invertebrate section of the Museo de Zoología, Pontificia Universidad Católica del Ecuador, Quito, Ecuador. 

Guallasamin, Diana. (2025). First report of an ocular anomaly in Cyclosternum Ausserer, 1871 (Araneae: Theraphosidae) from Ecuador. Revista Ibérica de Aracnología. 46. 131-132.