Pediculus humanus,
stylets as seen from left side
(the forked structures at the
base being those of the left side only).
Pediculus humanus,
stylets as seen from left side
(the forked structures at the
base being those of the left side only).
ds, dorsal stylet, hyp, part of hypopharynx; vs, ventral stylet, A, tip of ventral stylet (x1250) showing elaborate piercing end and groove in which the hypopharynx lies.
(Modified from Peacock and from Vogel.)