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Q: Identify this insect found in my san Francisco home ( Answered 5 out of 5 stars,   1 Comment )
Subject: Identify this insect found in my san Francisco home
Category: Science > Biology
Asked by: sfmarq-ga
List Price: $10.00
Posted: 09 Oct 2004 12:10 PDT
Expires: 08 Nov 2004 11:10 PST
Question ID: 412542
Today I found quite a few of these insects all over the floor in my
home. I have never seen them before, nor have I seen any of them
alive. I have posted an image of the insect at

Request for Question Clarification by lot-ga on 09 Oct 2004 14:14 PDT
Dear sfmarq

The reason why you 'might' not have seen any of these alive
is probably because they belong to the crustacean family
and 'should' live in the sea?

I couldn't find an exact match or name presuming this are land
creatures, but do you by any chance live by the sea, and they are
somehow introduced into your house?


Subject: Re: Identify this insect found in my san Francisco home
Answered By: googleexpert-ga on 09 Oct 2004 17:35 PDT
Rated:5 out of 5 stars
Hi sfmarg,

Your insect visitors goes by many names:
Lawn Shrimp, Terrestrial Amphipods and its 
scientific name Crustacea: Amphipoda [1]

Some facts about where Lawn Shrimp pop up:

Terrestrial amphipods live on the surface (top 1/2 inch) of mulch and
moist ground. After rains, large numbers of amphipods can migrate into
garages or under the doors of houses. There they soon die. Amphipods
do not have a waxy layer on their exoskeleton as do insects. They lose
or gain moisture from their environment. Too much of a water loss
results in desiccation while too rapid a gain is also lethal. This is
why they migrate out of rain-soaked soil to drier areas where they
usually end up dying anyway. Most species are active at night.[1]

About Insect removal or management:
There is no chemical control recommended. Improving drainage will
reduce the likelihood you will see them again.[2]


[Search Strategy]
"shrimp like" cockroaches

Hope that helps you.


Clarification of Answer by googleexpert-ga on 09 Oct 2004 18:45 PDT
Thank you very much for 5-Star rating! 

I appreciate it .:)
sfmarq-ga rated this answer:5 out of 5 stars

Subject: Re: Identify this insect found in my san Francisco home
From: pinkfreud-ga on 09 Oct 2004 16:17 PDT
I think Lot is right. These certainly look like some sort of
crustacean critters from the sea. Attack of the Land Shrimps?

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