Tigrosa

Brady, 2012

Species Guides

Tigrosa annexa(wolf spider)
Tigrosa aspersa(Woodland Giant Wolf Spider)
Tigrosa georgicola(Georgia Wolf Spider)
Tigrosa grandis
Tigrosa helluo(Wetland Giant Wolf Spider)

Tigrosa is a of wolf spiders (Lycosidae) established in 2012 to accommodate several North American previously assigned to Hogna. The genus comprises five recognized species distributed across the United States, Canada, and Mexico. The name derives from Latin roots meaning 'fierce like a tiger,' referencing distinctive patterning and . Tigrosa species are distinguished from related genera by patterning, arrangement, and female epigyne .

Tigrosa helluo by (c) Judy Gallagher, some rights reserved (CC BY). Used under a CC-BY license.

Tigrosa grandis by (c) Mila Turov, some rights reserved (CC BY), uploaded by Mila Turov. Used under a CC-BY license.

Tigrosa annexa by (c) Russell Pfau, some rights reserved (CC BY), uploaded by Russell Pfau. Used under a CC-BY license.

Pronunciation

How to pronounce Tigrosa: /tɪˈɡroʊsə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Distinguished from the related Hogna by three characters: the pattern on the surface of the , the arrangement of the , and the shape of the female epigyne. These features require close examination and comparison with for reliable identification.

Images

Habitat

Agricultural environments; at least one (T. helluo) has been documented as an agrobiont in disturbed agroecosystems.

Distribution

North America: United States (all five ), Canada (T. aspersa, T. helluo), and Mexico (T. helluo).

Behavior

Tigrosa helluo has been observed to use visual associative landmarks and beacon landmarks during spatial navigation tasks in laboratory water maze experiments. This also demonstrates broad thermal and active thermoregulatory , relocating to preferred temperatures around 20°C when exposed to thermal extremes.

Ecological Role

Agrobiont in agricultural .

Similar Taxa

HognaHistorically confused with Tigrosa; distinguished by pattern, arrangement, and female epigyne shape
LycosaNorth American formerly misplaced in this Mediterranean ; Lycosa does not occur in North America

More Details

Taxonomic History

Prior to 1990, many North American wolf spiders were placed in Lycosa. In 1990, seven were transferred to Hogna. Detailed examination of Hogna radiata led Brady (2012) to erect Tigrosa for species that did not match Hogna .