Trombidiidae Family Characteristics Quiz
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Questions and Answers

What is the pathogenesis of Trombiculidae larvae?

  • They inject cytolytic enzyme and feed on partly digested tissues. (correct)
  • They lay eggs under the skin resulting in irritation.
  • They penetrate the skin and feed on blood.
  • They release a toxin that causes skin discoloration.

Which mite is a vector of scrub typhus?

  • Psorergates ovis
  • Pediculoides ventricosus
  • P.simplex
  • Neoschongastia philippinensis (correct)

How do chigger mites cause irritation?

  • By injecting toxins into the skin. (correct)
  • By sucking blood from the host.
  • By laying eggs on the skin surface.
  • By secreting a cooling agent on the skin.

Which mite is known as the 'red bug of US'?

<p>T.alfreduggesi (A)</p> Signup and view all the answers

What is the control method recommended for trombiculid mites?

<p>Spray 2lb/acre of toxaphene/chlordane. (C)</p> Signup and view all the answers

Which family of mites do not penetrate the skin and cause mild chronic inflammation?

<p>Cheyletidae (C)</p> Signup and view all the answers

What is the family name of the mite that causes demodectic mange in various mammals?

<p>Demodicidae (B)</p> Signup and view all the answers

Which species of Demodex mite is known to infect humans?

<p>D.folliculorum (A)</p> Signup and view all the answers

What is the primary location where Demodex mites live within the host?

<p>In the hair follicles and sebaceous glands (C)</p> Signup and view all the answers

Which of the following is a characteristic of the Demodex mite's appearance?

<p>Elongated, distinct head, thorax and abdomen, cigar-shaped with 4 pairs of stumpy legs (C)</p> Signup and view all the answers

What is the primary reason that demodectic mange is difficult to treat?

<p>The mites live deep within the skin, making them less accessible to topical treatments (B)</p> Signup and view all the answers

Which form of demodectic mange is considered the more severe?

<p>Pustular/follicular form (A)</p> Signup and view all the answers
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