Unidentified Bathroom Bug
February 16, 2010
I found this critter in my second floor bathroom. It has what I thought was a distinctive white-brown-white, H shaped marking on its backside that I thought would make it easy for me to identify. I have searched but I still have no idea what it is. I tried to get better photos, but the ones I have are a bit blurry because he kept trying to escape. Any info would be appreciated.
Bob in HI
This is an immature Cockroach, though we are not certain if it is a species that infests homes.
Karl may have found the answer
Hi Daniel and Bob:
It looks like Balta notulata (Blattodea: Blattellidae), although there appears to be more extensive black on the pronotum. This is a very wide ranging cockroach, found throughout Asia and the Pacific Islands. I suspect it is not native to Hawaii but I was unable to find out where it originally comes from. There is one other species of Balta in Hawaii, the Wood Cockroach (B. similis) that may be a native species, but I couldn’t find any nymph photos. The Wood Cockroach is an outdoor cockroach that occasionally finds its way indoors, while B. notulata is considered an indoor species. I would say it is one of the two. Regards.
Eric Eaton disagrees
I’m about 99% positive this is a nymph of the Brown-banded cockroach, Supella longipalpa. They like to live inside electrical appliances because of the warmth. They are definitely a global domestic pest species. No exterminators may be necessary, though. Do-it-yourself, non-toxic bait recipes can be found online, especially at various “.edu” websites that discuss cockroach control.