Classification
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All Names

  • Scientific Names
    • Malacosoma californicum
    • Mallacosoma californicum
  • English
    • Western Tent Caterpillar
    • Western Tent Caterpillar Moth

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Recent observations

Photos / Sounds

14583486462_e88be263b0_s

What

Western Tent Caterpillar Malacosoma californicum

Observer

dnydick

Date

June 16, 2014 05:27 PM EDT

Photos / Sounds

No photos or sounds

What

western tent caterpillar Malacosoma californicum

Observer

mmreeves

Date

June 11, 2014

Photos / Sounds

No photos or sounds

What

Western Tent Caterpillar Moth Malacosoma californicum

Observer

ktasmith

Date

the past

Place

Frederickson, Washington (Google, OSM)

Photos / Sounds

Square

What

Western Tent Caterpillar Malacosoma californicum

Observer

eco-chic

Date

May 14, 2014

Photos / Sounds

Square

What

Western Tent Caterpillar Moth Malacosoma californicum

Observer

brytonseyfert

Date

May 30, 2014

Photos / Sounds

Square

What

Western Tent Caterpillar Malacosoma californicum

Observer

jerica_schmidt

Date

May 23, 2014 09:11 AM PDT

Description

We found this caterpillar on the way to the dunes. It likes to "hide" on plants as soon as they find a shelter they spin their cocoon.

Photos / Sounds

Square

What

Western Tent Caterpillar Malacosoma californicum

Observer

mossy

Date

May 26, 2014

Description

On an ornamental shrub.

Photos / Sounds

Square

What

Western Tent Caterpillar Moth Malacosoma californicum

Observer

marynavarro

Date

May 17, 2014

Photos / Sounds

Square

What

Western Tent Caterpillar Malacosoma californicum

Observer

kiana

Date

May 14, 2014

Place

Carkeek Park, Seattle, WA, US (Google, OSM)

Description

I am seeing these everywhere! These were high up, and other groups of caterpillars on the same scouler's willow were even more densely gathered. Some it seemed were twitching and dancing in the sunlight. It was kind of off-putting.

This was around 5:30PM.

Very fuzzy exterior with black, orange, and white coloration. Some I have found alone on shrub leaves as well.

Photos / Sounds

Square

What

Western Tent Caterpillar Malacosoma californicum

Observer

wendy5

Date

May 2, 2014

Description

These Malacosoma fragilis, or Malacosoma californicum, aka Western Tent Caterpillars were squirming together on a Nootka Rose bush close to the beach. They are now about half an inch long. Last year in this area there was a terrible infestation of these caterpillars, destroying a lot of fruit and vegetation.

Tags

Photos / Sounds

Square

What

Western Tent Caterpillar Malacosoma californicum

Observer

richleighton

Date

April 25, 2014 01:38 PM PDT

Photos / Sounds

What

Western Tent Caterpillar Malacosoma californicum

Observer

icosahedron

Date

April 18, 2014 11:50 AM PDT

Description

On willow.

View all observations

Description from Wikipedia

The Western Tent Caterpillar (Malacosoma californicum) is a moth of the family Lasiocampidae. It is a tent caterpillar. It is found in the western part of the Nearctic ecozone.

No range data available.