Location is in Canada / Ottawa

I did a web search, but I can't figure out what species it is.


  • 1
    $\begingroup$ If it is still there could you take pictures showing its eyes? $\endgroup$
    – Tyto alba
    Commented Oct 9, 2016 at 12:10
  • 5
    $\begingroup$ plz mention some measurement; approximate at least $\endgroup$
    – user25568
    Commented Oct 12, 2016 at 7:06

2 Answers 2


This is very likely an araneid (or Orb-weaver spider) in the family Araneidae.

Without further evidence/details, it's hard to narrow down to a species.

One possibility is Larinioides sclopetarius (the bridge spider or gray cross spider).

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Source: Ed Nieuwenhuys

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Source: Eurospiders.com

  • Description:

    Prosoma grey to grey-brown. Opisthosoma grey to grey-brown, dorsally with pronounced, white margined pattern. [Source: University of Bern]

  • Size: females = 10-14 mm ; males = 8-9 mm.
  • Web: orb webs can have diameters of up to 70 cm.
  • Ecology: often lives on briges or near water; often found on steel structures.
  • Range: holoarctic including Ottawa, Canada


What it's NOT

Although visually similar, this is not Nuctenea umbratica (walnut orb-weaver)



The specimen is also unlikely Larinioides ixobolus, which generally has a black outline (vs white) on their backs And is constrained to Europe/Asia:

enter image description here


  • $\begingroup$ you posted a similar answer in a different question $\endgroup$ Commented Apr 21, 2018 at 20:08

Possibly incorrect, but it looks like some kind of orb weaver - from the shape of the abdomen and the posture, it's very similar to a lot of orb weavers and potentially is in the Araneus genus.

I don't think it's this species, but you can perhaps see the similarities; http://www.spiders.us/species/araneus-diadematus/#more_pictures

It could also be an immature, hard to know :/


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