I'd like to know if it is possible to identify the spider in the photo below.


In fact, as shown in the next picture, it is very small.


Location: South of Brazil.

  • $\begingroup$ I've seen a very similar cephalothorax pattern before, but I'm not sure where. Perhaps in the Zoropsidae, but I'll have to go look through my books and get back to you. $\endgroup$ Commented Feb 9, 2018 at 16:06
  • $\begingroup$ It would help if you could see how many eyes it have. It helps a lot in spider identification. $\endgroup$
    – Rodrigo
    Commented Jul 10, 2018 at 0:21

1 Answer 1


This is Arachosia praesignis, a kind of ghost spider from the Anyphaenidae family.


(Photo source: https://inaturalist.ca/observations/150348963 )

See this paper for representatives of both the male and female specimen of this species, plus additional species of the Arachosia genus: https://www.biotaxa.org/Zootaxa/article/view/zootaxa.3932.1.1

(Available free on ResearchGate: https://www.researchgate.net/publication/273951397_Taxonomic_revision_of_the_American_spider_genus_Arachosia_Araneae_Anyphaenidae#fullTextFileContent )

The paper reports the distribution consistent with where you found it: enter image description here


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