Chapter 19: Phylum Arthropoda, Subphylum: Chelicerata, Class: Arachnida, Order: Acari

Question 1

This order is ___ and ___ the most important arachnids.

Answer 1

-medically, economically

Question 2

Those that belong to this order are ___ and ___ (in terms of habitat)Give specific example?(3)

Answer 2

• aquatic, terrestrial

- Deserts, polar areas and hot springs.

Question 3

There is ___ fusion of the cephalothorax and abdomen. There is no sign of external ___.

Answer 3

• complete, segmentation

Question 4

___ on each side help pierce, tear or grip food.

Answer 4

chelicerae

Question 5

Adult mites and ticks possess how many pairs of legs?

Answer 5

• 4

Question 6

They transfer sperm ___ or by ___.

Answer 6

• directly

- spermatophores

Question 7

Eggs hatch releasing a ? Which is followed by what stage?

Answer 7

• six legged larva

- eight legged nymphal stage

Question 8

What type of mites are free living and often cause allergies?

Answer 8

House dust mites

Question 9

What type of mites are important agricultural pest mites that suck out plant nutrients?

Answer 9

• Spider mites

Question 10

What type of mites feed on dermal tissues and cause skin irritation?
What are their larval called?

Answer 10

• Chiggers

- Trombicula

Question 11

What type of mites are harmless but in some species may cause mange ( massive hair loss) in domestic animals.

Answer 11

• Hair follicle mite Demodex

Question 12

What type of might causes intense itching in humans?

Answer 12

• Human itch mite

Question 13

Tick species carry __ disease and transmit ____.

Answer 13

• lyme

- rocky mountain spotted fever

Question 14

What tick transmits texas cattle fever?

Answer 14

Cattle tick