You can differentiate this nit from the similarly appearing nits of the head and body lice by its taller operculum (cone of cells at the apex):
And now a poem from Blaine Mathison (I'm not taking responsibility for this one!)
Chilling at home in his bachelor pad
trying to get all the booty that he could grab
but his latest of trysts
gave him a gift that persists
for now he's host to Sebastian the 'Crab'