Pediculus humanus,
head from below to show ventral styles and protractor
muscles.
Pediculus humanus,
head from below to show ventral styles and protractor
muscles.
an, antenna; ap, anterior part of pharynx; bf, buccal funnel pbf, protractor of buccal funnel rbf,retractor of buccal funnel; ps,protractor of stylet; vs,ventral stylet. (x195)
(After Sikora.)