Acarology

classification and morphology

• acari
  • tick > 1mm
    • hard ticks Ixodidae
    • soft ticks Argasidae
    • Nuttalliellidae
  • mite < 1mm
    • scrub typhus mite, Chigger mite Trombiculidae
    • scabies mite Sarcoptidae
    • house dust mite Pyroglyphidae

• only 1 body part
  • front end part is not head, but mouth
• adult 8 legs, larvae 6 legs
• breathe through body surface
  • stigmata (respiratory hole)
    • prostigmata
    • astigmata
    • mesostigmata
    • metastigmata
  • whole surface by diffusion
    • tick living in 400m depth of seawater