Prevention of Lice and Cockroaches

Question 1

distinguishing characteristics of lice

Answer 1

• pediculus humanus humanus
• pediculus humanus capitis
• phthirus pubis

Question 2

pediculus humanus humanus

Answer 2

• body louse
• ) usually found on areas of body other than head and neck
• ) attaches nits to clothing and undergarments

Question 3

pediculus humanus capitis

Answer 3

• head louse
• ) usually found on head and neck
• ) can be located in other hairy parts of the body
• ) egg of head louse (called a “nit”) is cemented to hair

Question 4

phthirus pubis

Answer 4

• crabs louse
• ) usually found on hairs in the pubic, anal regions, eyebrows
• ) can be located in other hairy parts of body
• ) cement nits to hair

Question 5

control methods treatment

Answer 5

• isecticidal ointment/shampoos such as elimite (permethrin)
• ) family members should be treated simultaneously
• wash all clothing, linens at 37.8C (100F) or higher
• ) this greatly reduces eggs from hatching
• wash all brushes/combs w/t hot water, soap
• avoid use of common articles of personal hygiene, grooming

Question 6

distinguishing characteristics of cockroaches

Answer 6

• german
• brown-banded cockroach
• american cockroach

Question 7

germen cockroach characteristics

Answer 7

• appearance of adults
• ) tan/straw colored
• ) 15mm in size
• ) has two longitudinal dark stripes near the head
• ) female produces an average of 6 egg capsules in a lifetime

Question 8

germen cockroach egg capsules

Answer 8

• contains up to 50 eggs

Question 9

germen cockroach habits

Answer 9

• most common indoor species, especially in, around food services spaces, facilities
• need food, water, harborage, warmth for growth, survival

Question 10

brown-banded cockroach characteristics

Answer 10

• appearance of adults
• ) lighter in color than germen cockroach
• ) less than 15mm long
• ) two yellow cross bands near the base of the adult wings, two transverse light bands on the dorsal surface of nymphs
• ) female produces an average of 10 eggs capsules in her lifetime

Question 11

brown-banded cockroach egg capsules

Answer 11

• contains an average of 15 eggs

Question 12

brown-banded cockroach habits

Answer 12

• prefers living rooms, dining rooms, bedrooms, closets of dwellings
• it is common pest in hotels, motels, often found in hospital wards
• it is not considered a food service area species

Question 13

American cockroach characteristics

Answer 13

• appearance of adult
• ) dark reddish-brown
• ) 35mm long
• ) anterior dorsal plate behind the head has conspicuous yellow posterior board strip
• ) an average of 34 capsules are produced by each female

Question 14

american cockroach egg capsules

Answer 14

• an average of 15 eggs

Question 15

american cockroach habits

Answer 15

• filthy habits, moving from shelter/breading area to food sources
• potential dangerous disease vector

Question 16

control methods for all cockroaches

Answer 16

• sanitation- must important non-chemical measure
• eliminate harborages
• surveillance and chemical control

Question 17

sanitation- must important non-chem measure

Answer 17

• store food properly
• garbage, other refuse should be in containers w/t tight-fitting lids, cleaned daily
• good restricted from berthing
• reduction of food sources and general cleanliness

Question 18

eliminate harborages

Answer 18

• typical harborages include the following
• ) old and torn insulation
• ) areas between walls
• ) areas behind drawers, oven hoods, under counters, serving lines
• ) hollow legs
• ) holes for plumbing, electrical lines

Question 19

surveillance and chem control

Answer 19

• visual inspection for cockroach harborages
• ) flush agents are useful in locating cockroach harborage
• survey every 2 weeks in food services areas
• ) use cockroach sticky traps to survey for cockroach
• apply pesticide as a supplement for sanitary control measures
• ) place to be treated must be properly prepared to prevent accidental exposure of food, food prep surface
• ) prohibit entry of personnel into treated spaces for at least one-half hr after treatment
• ) remove all dead cockroach, eggs promptly
• ) wash all food contact surfaces thoroughly
• ) refrain from complete field day on treated spaces for 24hrs to prevent insecticides from being washed out