Ohio State University Extension Bulletin

Head Lice

Bulletin 893-01

The following images have been provided by The National Pediculosis Association.

 

adult head louse under artificial lighting
nit (egg) under artificial lighting
Microscopic image of adult head louse under artificial lighting
Microscopic image of nit (egg) under artificial lighting
Adult (top). Nymph or immature (bottom)
Size comparison between nits (eggs) and the head of a pin
Head lice developmental stages: Adult (top). Nymph or immature (bottom)
Size comparison between nits (eggs) and the head of a pin

 

 

The following websites contain additional pertinent information about head lice:

• http://www.headlice.org
 • http://www.hsph.harvard.edu/headlice.html
• http://www.jcu.edu.au/school/phtm/PHTM/hlice/eggs.htm

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