I have been finding this type of insect in increasing numbers in my bathroom cupboard and kitchen, particularly congregating in the sugar and salt but just generally running around anywhere dark as well. I haven't seen any in the flour or grains that I have stored. I would appreciate any help in identifying it!
The insects are about 1mm long and so I photographed them through a child's microscope (20 - 40 x magnification).
After spending ages looking on the internet I finally found a good identification key and it lead me to conclude that my mystery invaders are book lice. It makes sense, as they are often seen scattered in my spare room when I move papers about but as this is probably their preferred habitat and I have books and paper everywhere in my spare room they haven't congregated in a single area as they have in the kitchen and bathroom. The salt I found them in in the kitchen was stored in a wooden box, which may have been what they were interested in rather than the salt itself.
I'd be interested to know whether anyone agrees with my identification and what I can do to get rid of them. I'm guessing that cleaning my house more rigorously and tidying up the papers may help!
It does. I was thrown by your pic showing a rounded and shiny body, rather than a flat and lined one! Is the pic of an egg laden female I wonder and does that individual look different to others?