New Insight Into the Evolutionary Arms Race Between Spider Egg Sac Pseudoparasitoids and Active Maternal Care by the Spiders

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  New Insight Into the Evolutionary Arms Race Between Spider Egg Sac Pseudoparasitoids and Active Maternal Care by the Spiders ABSTRACT Pseudoparasitoids can lead to high mortality in spider egg sacs, and in some cases, they reduce the reproductive success of a spider female to zero. On the other hand, a species that develops within the spider's egg sac uses a limited resource derived from a single egg sac for its larval development. Therefore, the most crucial behaviour that increases the fitness of free-living pseudoparasitoid females is choosing the best host for their offspring. We analysed various points of the counter-adaptations of the spider egg sac pseudoparasitoid and spiders exhibiting active maternal care, utilising the ichneumonid  Hidryta fusiventris  (Thomson, 1873) and the wolf spider  Pardosa lugubris  (Walckenaer, 1802). We showed that the oviposition decision of  H. fusiventris  is based on the spider's egg sac size and that the fema...

Prodidomus Hentz, 1847 and Zimiris Simon, 1882 on Ascension Island (Araneae: Prodidomidae)

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Prodidomus Hentz, 1847 and Zimiris Simon, 1882 on Ascension Island (Araneae: Prodidomidae)

Abstract 

A review of type material and newly collected material of the family Prodidomidae Simon, 1884 from Ascension Island is presented. Prodidomus clarki Cooke, 1964 is proposed as a junior synonym of Prodidomus rufus Hentz, 1847 syn. nov., and Prodidomus duffeyi Cooke, 1964 is deemed as a valid species but known only from a single bleached specimen, further material is needed to fully clarify its identity, The third prodidomid species on the island is confirmed as Zimiris doriae Simon, 1882.

Note: A special thank you to Danni Sherwood for sending me this publication in advance. 

Sherwood, Danniella & Sharp, Adam. (2023). Prodidomus Hentz, 1847 and Zimiris Simon, 1882 on Ascension Island (Araneae: Prodidomidae). 41. 85-92. 10.24394/NatSom.2023.41.85.