Siphonaptera: Fleas
- The characteristics of these wingless insects, their life cycle, feeding and habitat, with illustrations.
- http://www.ento.csiro.au/education/insects/siphonaptera.html

Insect Insights: Flea Circus
- Photographic study by Dave Walker of these insects.
- http://www.microscopy-uk.org.uk/mag/artjun98/insecin2.html

Fleas
- Ohio State University Extension fact sheet about fleas, including a species list and information about life cycle and control.
- http://ohioline.osu.edu/hyg-fact/2000/2081.html

Integrated Flea Control
- University of Nebraska Cooperative Extension in Lancaster County factsheet and audio on flea biology and control.
- http://lancaster.unl.edu/enviro/pest/factsheets/007-98.htm

Fleas - Animal Health
- Brief information about the cat flea (Ctenocephalides felis).
- http://www.animalhealthchannel.com/fleasticksmites/fleas/

Insecta Inspecta World - The Common Cat Flea
- Taxonomy, anatomy, jumping skills, reproduction, and control of the cat flea.
- http://www.insecta-inspecta.com/fleas/cat/index.html

The Black Death: Culprit: The Oriental Rat Flea
- About the flea and the disease.
- http://www.insecta-inspecta.com/fleas/bdeath/index.html

Introduction to the Siphonaptera
- A brief introduction to fleas by UCMP Berkeley, with photograph.
- http://www.ucmp.berkeley.edu/arthropoda/uniramia/siphonaptera.html

Flea News
- A biannual newsletter devoted to mostly bibliographic information about fleas.
- http://www.ent.iastate.edu/FleaNews/aboutfleanews.html

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).
- http://www.zin.ru/Animalia/Siphonaptera