Bristletails (Archaeognatha)

I've only encountered one species (or at least one genus - I couldn't identify the females to species) so far. I've used the RES Handbook to identify these, but note that figures 4 and 11 are captioned incorrectly - figure 4 is Pterobius brevistylis and figure 11 is Pterobius maritumus.

Sea Bristletail Pterobius maritimus