27 May 2023

Tigrosa means "fierce like a tiger"(Brady, 2012) and is an apt name for some of North America's largest wolf spiders. Though these are also some of the largest spiders in Minnesota, I rarely encounter them. They are longer-lived (like the Geolycosa from my previous post); females may live 2-3 years while males typically live a single season (Kaston, 1948). Both species build burrows, sometimes under rocks or logs, from which they emerge each night to hunt for prey. Both members of the genus have a pale yellow to yellow midline stripe on the carapace.

On iNaturalist, Tigrosa helluo is called the Wetland Giant Wolf Spider. As its common name suggests, it is associated with wetlands and lake edges though Kaston indicated it has been found in woodlands as well (1948). In this species, the coloration ranges from dull yellow to greenish brown (Kaston, 1948) but darker individuals do occur. The pale yellow midline ...more ↓

Posted on May 27, 2023 03:40 PM by cheins1 cheins1 | 0 comments | Leave a comment
More Journal Posts

Recent observations View All

More Observations


Help fill in the gaps in our knowledge of Minnesota spiders and their distribution by submitting quality photographs of spiders.

In order for your pictures to be part of this project, you will need to submit the date and location where you found the spider.

A preliminary checklist for Minnesota's spiders can be found here: ...more ↓

cheins1 created this project on August 12, 2016
Embed a widget for this project on your website