Tigrosa vs Rabidosa

[Shrkldy]

Can someone help me understand what differentiates Tigrosa vs Rabidosa? I had IDed this Rabidosa Rabidosa but someone else suggested Tigrosa annexa. How can I tell the difference between the two genera? Thanks!

 

[WildSpider]

Can someone help me understand what differentiates Tigrosa vs Rabidosa? I had IDed this Rabidosa Rabidosa but someone else suggested Tigrosa annexa. How can I tell the difference between the two genera? Thanks!

By looking at Google Images, one difference I saw was that Tigrosa annexa's dark spot on the abdomen only went part way down whereas Rabidosa Rabida's dark spot extends all the way down.

To me, it looks like you have the Tigrosa.

 

[pannaking22]

Agreed with Tigrosa

 

[loxoscelesfear]

The spider in the photo is Tigrosa annexa. Rabidosa get much larger than annexa. Rabidosa punctulata has black spots on the underside of abdomen, Rabidosa rabida has lines on the abdomen with dash marks between them. annexa looks like a small Tigrosa helluo w/ a distinct cardiac mark and dashes that flank the median band of carapace. The more time you spend in the field, the easier identification will become.

 

[Shrkldy]

Thank you!! If you are interested/willing, check out our Biodiversity project on iNaturalist: https://www.inaturalist.org/projects/nsu-biodiversity
There are several spider observations there in need of an experienced arachnophile.

 

[pannaking22]

Thank you!! If you are interested/willing, check out our Biodiversity project on iNaturalist: https://www.inaturalist.org/projects/nsu-biodiversity
There are several spider observations there in need of an experienced arachnophile.

Just IDed a bunch of things, hope it helps with the project.