No, not actual spiders, but formations created by the process of sublimation, when a solid state transforms directly into a gaseous one, often creating furrows and exposing darker subsurface material. These spiders are on the ejecta blanket of an impact crater.

ID: ESP_055504_1010
date: 30 May 2018
altitude: 249 km

https://uahirise.org/hipod/ESP_055504_1010
NASA/JPL-Caltech/UArizona
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