Chapter 4 page 8

Question 1

• *Body lice are vectors:

1) RP

Answer 1

Rickettsia prowazekii (louse-borne epidemic typhus)

Question 2

• *Body lice are vectors:

2) BR

Answer 2

Borrelia recurrentis (louse-borne epidemic relapsing fever)

Question 3

• *Body lice are vectors:

3) BQ

Answer 3

Bartonella quintana (trench fever)

Question 4

________ for the louse that transmits it and although it is not always fatal in humans.**

Answer 4

Louse-borne typhus is fatal

Question 5

**Discovery of________prevented mortalities due to louse-borne typhus during the Second World War.

Answer 5

insecticidal properties of DDT

Question 6

crab louse (appearance) but it’s located on pubic hair.

Answer 6

Pthirus pubis:

Question 7

Order Siphonaptera (fleas):

Answer 7

Fleas lack compound eyes usually clusters of ocelli.

2) limited visual (only detect changes in light intensity. )

Question 8

Fleas have a body that is

Answer 8

laterally compressed

allows them to crawl between hair and feathers

Question 9

**Fleas have a sensory structure called

Answer 9

sensillum (pygidium) on the dorsal surface of their last abdominal segment that detects vibration. **

Question 10

**Fleas are holometabolous insects whose life cycle consists of

Answer 10

egg, 3 larval instars, pupal stage, and adult stage**.

Question 11

**The human flea (pulex irritans) uncommon in

Answer 11

industrialised countries

Question 12

UK and Europe has the what common flea?

Answer 12

cat fleas (Ctenocephalides feels)

Question 13

Dog fleas

Answer 13

Ctenocephalides canis

Question 14

**Fleas are intermediate hosts for the tapeworms:

Answer 14

Dipylidium caninum, Hymenolepis diminuta, Hymenolepis nana**

Question 15

Tungiasis; infection with fleas belonging to genus

Answer 15

Tunga

Question 16

Unusual fleas are

Answer 16

‘sandflies’
‘jiggers’
‘chigoes’