What's That Bug? does not endorse extermination

Subject: Weird bug near water
Location: Vancouver, BC
May 3, 2016 7:10 pm
This bug was found near a salt water inlet from the ocean, on the seawall. It was near by some restaurants. The weather was overcast, but warm.
Location: Vancouver, BC
Signature: Z

Sea Slater

Sea Slater

Dear Z,
Based on this Wikipedia image, we are pretty confident this is a Sea Slater,
Ligia oceanica, but we would not rule out the possibility that it is a closely related species in the same genus.  Ligia pallasii is another species in the genus that is pictured on BugGuide as well as on ASnailsOdyssey where it states:  “Studies on field diets of sea slaters Ligia pallasii on rocky, wave-swept shores on the outer coast of Vancouver Island, British Columbia indicate a preference for diatoms, filamentous green (Cladophora photograph of a large male isopod Ligia pallasiisp. and Ulva sp.) and red (Bangia sp.) algae, membranous (Porphyra spp.) red algae, and various kelps.”  According to BugGuide, that species is commonly called a Common Rock Louse and its habitat is “Caves and crevices on rocky sea cliffs” from “Northwestern US; Central California to Alaska.”

Oh my goodness, thank you so much!
Best, Zoë

What's That Bug? does not endorse extermination
Location: Vancouver, British Columbia, Canada

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