Currently viewing the category: "Crustaceans"

Subject:  Unknown “insect” under water
Geographic location of the bug:  Madison county Kentucky USA
Date: 04/05/2019
Time: 01:50 PM EDT
Your letter to the bugman:  Found these in a communications manhole. They seem to have 6 legs per side for a total of 12.
How you want your letter signed:  Ian


Dear Ian,
These are sure puzzling creatures, and we cannot devote the time we would like to their identification at this moment.  We are posting your images and we hope to hear from our readers while we do additional research.  Are you able to provide any information on their size?



Update:  We suspected these were Crustaceans.  We wrote to Eric Eaton who wrote back “Some kind of amphipod, not sure beyond that as they are not insects nor arachnids.”  In researching Freshwater Isopods, we found these image of a cave dwelling Isopod on Encyclopedia of Arkansas, and since there are numerous caves in Kentucky, we speculated that it would be easy for some cave species to survive in a sewer.

Subject:  Unknown Bug
Geographic location of the bug:  California Coastal
Date: 02/16/2019
Time: 12:26 PM EDT
Your letter to the bugman:  Hi,
I keep finding these bugs dead on my floor. I opened some boxes from overseas so that my be where they came from.
How you want your letter signed:  Simon

Lawn Shrimp

Dear Simon,
You are correct that this Terrestrial Amphipod, commonly called a Lawn Shrimp or House Hopper, is from oversees, however, we do not believe it came from your boxes.  Lawn Shrimp have been reported in Southern California for many years.  According to BugGuide, their range is “Southeastern Australia (New South Wales and Victoria), as well as nearby areas of the Pacific, but introduced into New Zealand, the British Isles, Florida and California” and “Non-native; introduced probably from Australia along with blue-gum eucalyptus trees in the 1800s. First recorded in San Francisco, CA in 1967.”  They are not usually noticed until we have soaking rains and they seek shelter from the water-soaked ground.  BugGuide notes:  “These are rarely seen except when flooding or lack of moisture forces them to abandon their home in the soil in search for suitable conditions. At such times they often end up dieing on pavement or in homes and become a nuisance. Once they start appearing, there’s not much that can be done except to sweep them up- pesticides are pointless, bcause by then they’re already dying or dead.”

Subject:  Bug
Geographic location of the bug:  Ireland
Date: 02/06/2019
Time: 08:39 AM EDT
Your letter to the bugman:  I have found two of theses and my skin is itchy could you tell me what it is
How you want your letter signed:  I don’t understand this


This is a terrestrial Isopod known as a Woodlouse and we doubt it has anything to do with your itchiness.

Subject:  Identify insect
Geographic location of the bug:  Hyderabad
Date: 12/14/2018
Time: 12:18 AM EDT
Your letter to the bugman:  Hello sir,
Plz tell us the source of this bug
We work at hospital., These bigs are found in operatiom theatre.Which is not at all acceptable..
We would like to know, what kind of bugs are these and why they reside in OT..
Source of these bugs..
Kindly help us.. as soon as possible.
Thank you
How you want your letter signed:  Mail


These are terrestrial Isopods known as Woodlice or Sow Bugs, and they are benign.  They are generally found in moist environments where they feed on decaying organic matter.  Though it is a North American identification site, the information on BugGuide is relevant.  According to BugGuide the habitat is “wherever cool, dark, moist places are available to shelter woodlice from dryness and heat during the day” and their food includes “Plant material, usually dead. If live plants are soft and moist enough on the outside, they will eat them and sometimes do damage.”  Is your operating theater on the ground floor or below ground in a basement?  They are likely entering through cracks and spaces in the walls, so sealing off the operating theater from the outside environment should remedy the matter.

Hello sir..
Our operation theatre is located in 3rd floor above the ground..
And we noticed these bugs in OT after a rainy day…
Thank you for your valuable time..
I will revert back to you , when necessary…

Subject:  What is this?
Geographic location of the bug:  Durham, NC
Date: 08/03/2018
Time: 11:14 AM EDT
Your letter to the bugman:  Can you tell me what this is?  Saw it it a parking lot.
How you want your letter signed:  Deb


Dear Deb,
Your image is lacking in critical clarity, but it also beautifully illustrates a Crayfish (AKA Crawfish, Clawfish or Crawdad) in a threat position.  Though not considered dangerous to humans, Crayfish will defend themselves with their claws and a large individual might deliver quite a pinch.  We love the images on of a Fight between cats and a crayfish.

Thank you!  That’s exactly what it is.  Just don’t know why it was in a parking lot no where close to water!

That is odd, though Crayfish can survive for long periods of time out of water.

Subject:  Looks like a lobster but really small
Geographic location of the bug:  Chicago, Il
Date: 06/13/2018
Time: 09:18 AM EDT
Your letter to the bugman:  Any help would be appreciated
How you want your letter signed:  Thank You


This is a freshwater Crustacean known as a Crayfish, and they are classified in the same taxonomic sub-phylum as Crabs and Lobsters.