Best time to travel to Texas

Tarantula Migration in Texas

Native Texas spiders leave their burrows en masse in search for females

Best time: May–early October

Tarantula Migration
Ross Maxwell Scenic Drive at Big Bend National Park

Texas brown tarantulas are the largest and heaviest spiders in the state, with an average body length of 1,5 inches (40 mm). They are often feared because of their size. However, tarantulas are usually harmless to people. Every summer, thousands of tarantulas take over the roads, trails, and even backyards all over Texas, searching for a mate. The annual migration starts in May and lasts through July. In Central Texas, tarantulas can be observed as late as early October.

Tarantulas are commonly seen throughout the Rio Grande Valley. the Prairies and Lakes region, Pineywoods, the Hill Country and west to the Trans-Pecos and the Chihuahuan Desert. The Texas brown tarantula is abundant in the Arbor Hills Nature Preserve in Plano, in the northern part of the state. and Central Texas's Highland Lakes area. In the south-western part of the state, the best spider-watching destination would be Big Bend Ranch State Park on the border with Mexico.

The Texas brown tarantula has eight legs, eight eyes, and fangs that help it inject venom into prey. The venom is usually not toxic to humans. Male tarantulas stay in their burrows until they reach maturity and then head out to mate and die shortly after. Female tarantulas live for about 20-25 years, laying from 100 to 1000 eggs each season.

Practical info

When are tarantulas active in Texas?

Tarantulas are active and most easily seen in Texas from May to early October, when thousands of these spiders search for mates on roads, trails, and backyards. This spider migration time usually starts in May and lasts through July. Tarantulas can be observed up to early October in Central Texas. Show more

Where is tarantula migration in Texas popular?

Tarantulas are commonly observed in Texas in regions such as the Prairies and Lakes, the Pineywoods, the Hill Country, Rio Grande Valley, west to the Trans-Pecos, and the Chihuahuan Desert. A recommended spider-watching destination is Big Bend Ranch State Park, near Mexico, for the southwestern part of the state. In central Texas, they can be found in Arbor Hills Nature Preserve, Plano, and the Highland Lakes region. Show more

What is the size of Texas brown tarantula?

The Texas brown tarantula is the heaviest and largest spider species in Texas. It has an average body length of 1.5 inches (40 mm). However, it grows up to 4 inches (100 mm) long, with a leg span of 7 inches (180 mm). These spiders have dark brown coloration on their hairy bodies, providing a camouflage ability that blends well with their local environment. Show more

Are tarantulas dangerous to humans?

Tarantulas are typically not dangerous or harmful to humans. Although they have fangs to inject venom to prey, these spiders seldom bite unless threatened. Human victims bitten by tarantulas usually experience just minor pain and swelling. Tarantulas live solitary and reclusive lives in their burrows, keeping their distance from humans and other perceived threats. Humans are more likely to fear tarantulas than the reverse. Show more

How prolific are female tarantulas in terms of lifespan and laying eggs?

Female tarantulas tend to live long lives of about 20-25 years, while males experience brief life cycles, primarily mating before they die. Tarantula females lay between 100 to 1000 eggs per season. These spiders are primarily protective of their eggs and place them in silk nests until the spiderlings mature to form their webs and move out independently. Show more

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Last updated: by Olga Valchyshen