Flea News: A biannual newsletter devoted to mostly bibliographic information about fleas.
Fleas: Article by P.G. Koehler about flea biology with photographs, and tables relating to their control.
Fleas: Ohio State University Extension fact sheet about fleas, including a species list and information about life cycle and control.
Fleas (Siphonaptera): Zoological Institute of Russian Academy of Sciences (St.Petersburg, Russia) presents information on morphology, biology, distribution and importance of fleas (Class Insecta: Order Siphonaptera).
Fleas - Animal Health: Brief information about the cat flea (Ctenocephalides felis).
Insecta Inspecta World - The Common Cat Flea: Taxonomy, anatomy, jumping skills, reproduction, and control of the cat flea.
Integrated Flea Control: University of Nebraska Cooperative Extension in Lancaster County factsheet and audio on flea biology and control.
Introduction to the Siphonaptera: A brief introduction to fleas by UCMP Berkeley, with photograph.
The Black Death: Culprit: The Oriental Rat Flea: About the flea and the disease.