craft a backup set of gear to help recover your good gear
and a mace and bow and bunches of arrows

if its dark, wait at your house til morning (cook/craft/refining/farming)
eat good foods before heading out
go slowly, taking mobs a few at a time when you see them
til you get to your corpse, then port back home to swap out gear, repair and store backup gear again

deathsquitos do pack a punch, but have almost no health, any arrow or mace/ax hit can kill them
when you hear the buzz, turn toward it and swing
if you miss, stand still, it will circle you and attack heading straight toward you again
you cannot outrun them