Subject: Bug ID_Beetle perhaps?
Location: Santa Rosa, CA
October 16, 2012 5:49 pm
This summer I have had somewhat of an infestation of these bugs outside my house. If I set a box outside on the ground, they would infest the box. Have not seen many recently, but keep seeing them occasionally skittering across my second floor kitchen on the counter. Now I need to find out what they are, what they eat and why they are coming indoors. This is one I whacked on my counter. Fortunately, I did not totally smash it. Thank you in advance for your help.
Signature: K. D.

Cockroach Parts

immature cockroach

Dear Daniel,
Thank you so very much for your prompt response. I think that your website is fantastic. That is why I had to send you a pic for ID. It was taking me way to long. I was only on the 24th page of beetles after two hours of looking. Due to my seriously inquisitive ADD nature, I just had to keep stopping and reading about every interesting pic. At the rate I was going, I was never going to ID this critter…….lol.  I now have your site bookmarked for further pleasure reading. Great work you have done!
Now that I have identified it further as the Phyllodromica trivittata (courtsy of your website), I do not think I need to take any further eradication action at this time. From all I have read so far, they do not seem to really be a household pest. sightings in the house have been sporadic. If that changes in the future though, I will go after them. I will see how it goes next summer.  I hope you have a great day!

Hi Karen,
Thanks for the followup.  Your letter was one of our attempts to respond to as many requests as possible, hence the short ID.  We are happy you learned the identity of your immature Cockroach on our site and that you have decided not to take any eradication measures, but we are most happy to hear that you have found our archives interesting.  Your response really made our morning and we sifted through the trash to fine your original request so that we could make a posting.  Here is what BugGuide states about this species:  “Reports of high abundance both indoors and outdoors make it likely that reproduction is occurring outdoors with subsequent invasion of nearby structures. As this species adapts to this new environment, studies will need to be conducted to confirm this.”
  BugGuide continues with:  “Known from dry habitats around the Mediterranean. It has been recorded from Morocco; Algeria; Spain; Italy (Sardinia Island); Italy (Sicily); Libya; and Israel. Given that it has not been recorded as being a pest in buildings in those countries (as far as I’m aware) it is unlikely to invade buildings in the USA. Comment by George Beccaloni (The Natural History Museum, London, UK).”  As a note, we always tend to worry about introduced species that thrive in a new environment as they can displace native species and reduce species diversity once they become established.

Update:  November 2, 2012
Here is a good link to send out for this bug to people in California. Some great pics. Invasive species are a good argument against global commerce.
Volume 25 (2011) (10MB); covering the years 2008-2009  Page 7

Location: California

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