Friday, April 10, 2026

[Arachnida • 2026] “The Cordyceps Spider”: Taczanowskia waska sp. nov. (Araneae: Araneidae), A New spider Species and A Novel Case of Mimicry of an Araneopathogenic Fungus (Cordycipitaceae: Gibellula)


Taczanowskia waska
Díaz-Guevara, Bentley & Dupérré, 2026 
 

Abstract 
Herein, we describe a new species of the rare spider genus Taczanowskia Keyserling, 1879 (Araneae: Araneidae), Taczanowskia waska sp. nov. (♀) from the Ecuadorian Amazon. Additionally, we discuss its unique fungal mimicry, comment on Taczanowskia ecology, and provide an updated taxonomic key for females of the genus. The importance of this discovery extends well beyond the description of a novel taxon, representing the first reported case of Arachnid mimicry of an araneopathogenic fungus. Finally, we discuss the application of citizen science to collecting ecological and biogeographical data on arachnids and its potential use for describing new taxa. 

Araneae, fungal-mimicry, arachnids, mycelium, Amazon, llanganates-Sangay Connectivity Corridor


Taczanowskia waska sp. nov., female holotype, alive.
 a, dorsal view. B, second dorsal view. C, posterior dorsalview. D, frontal view. e, posterior dorsal view with an ovisac. 

 Records of spiders with apparent fungal mimicry.
a, Taczanowskia waska sp. nov. from Pastaza, ecuador (© David R.Díaz-Guevara). B, unknown araneidae species from Huong National Park, vietnam, 2013 (© Paul Bertner).
C, D, an undescribed species of Acantharachne from uganda, 0.390, 33.113 (© Frank Deschandol).
E, Exechocentrus lancearius from Madagascar, -18.966, 48.592 (© Artur Tomaszek). F, Mastophora leucacantha from coastal Brazil, -23.959, -46.190 (© Thiago Gonçalves Coronado Antunes).


David R. DÍAZ-GUEVARA, Alexander Griffin BENTLEY and Nadine DUPÉRRÉ. 2026. “The Cordyceps Spider”: Taczanowskia waska sp. nov. (Araneae: Araneidae), A New spider Species and A Novel Case of Mimicry of an Araneopathogenic Fungus (Cordycipitaceae: Gibellula).  Zootaxa. 5760(5); 563-576. DOI: doi.org/10.11646/zootaxa.5760.5.4 [2026-02-26]
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