Subject: tiny bugs on outside walls of house
Location: Phoenix AZ
April 28, 2014 3:22 pm
we just noticed these buggers on our outside walls. they don’t appear to fly; when i touch the wall near one, it falls,. the photo is of a bougainvillea petal floating in our pool, with what (i think?) appears to be a queen! either that, or something wanting to eat them all. please help, so we know what to do, if you can. they are getting inside one window which doesn’t seal properly and a parakeet lives near that window! thank you!!
These immature Heteropterans look remarkably like some still unidentified, possibly Dirt Colored Seed Bugs we posted from Montana in 2012. The Fly may be a Syrphid Fly, a family that has many species with larvae that feed on Aphids, members of the same insect order as your True Bugs. We will try to get Eric Eaton’s opinion on this identification.
Eric Eaton Responds
Wow, immatures are really hard. I suspect something in the “Lygaeoidea” like you do, but….Fly might be a Chloropidae [Ed. Note: See BugGuide]. This whole image looks like something out of a sweep net sample through a grassland.
Ed. Note: May 2, 2014
We posted some images of a very similar Heteropteran nymph that might be a False Chinch Bug, Nysius raphanus, and the same is likely true for this posting. According to Colorado State University Extension: “Mass migrations of false chinch bugs in the vicinity of buildings are primarily associated with very hot, dry weather. This may force the insects to move from drying weed hosts to seek shelter and higher humidity. Migrations indoors may occur through openings and cause nuisance problems. However, false chinch bugs do not bite, do not feed nor damage anything indoors, and will ultimately die out if trapped inside. Irrigated landscapes adjacent to buildings may further encourage false chinch bug migrations to these areas. Therefore it may be desirable to temporarily discontinue watering in the immediate vicinity of the building when a problem migration is in progress. Providing cool, humid areas at some distance may encourage the insects to move away more rapidly.” According to BugGuide: “3 (or more) species are introduced N. caledoniae, huttoni, vinitor” which supports our believe that this might be an invasive exotic species.