Order Hemiptera

Question 1

False about Order Hemiptera
A. have one pair of wings
B. mouthparts - haustellate
C. metamorphosis is hemimetabulous

Answer 1

A - two pairs of wings

Question 2

What does haustellate mouthpart mean?

Answer 2

typically of the piercing and sucking type without palpi

Question 3

Mouthpart is for sucking & proximal wing half is leathery + distal wing half is membranous
A.bug
B.beetle
C.both

Answer 3

A

Question 4

Mouthpart is for chewing & entire wing is leathery
A.bug
B.beetle
C.both

Answer 4

B

Question 5

False about Family Reduviidae
A. usually have wings
B. bite the lips or areas around the mouth
C. Seen on the ground, burrows, or nests of animals, and dusty corners of buildings and houses
D. Nocturnal biters
E. Forewings do not cover the hindwings

Answer 5

E - forewings cover the hindwings

Question 6

(a) process of moulting is called __

(b) hormone responsible for moulting is called __

Answer 6

(A)ecdysis

(B)ecdysone

Question 7

False about Family Reduviidae
A. antennae have 4 segments
B. ocelli are usually present
C. lay eggs (in singles/batches) and glue them to crevices or cracks or sandy areas;
D. blood meal is not necessary before each molt

Answer 7

D - blood molt is necessary before each moult

Question 8

Which is most common in tropical countries like the Philippines?
A.Triatoma infestans
B.Rhodnius prolixus
C.Panstrongylus megistus

Answer 8

A

Question 9

has a juvenile hormone which keeps the insect young
A.Triatoma infestans
B.Rhodnius prolixus
C.Panstrongylus megistus

Answer 9

B

Question 10

antenna inserted near compound eyes
A.Triatoma infestans
B.Rhodnius prolixus
C.Panstrongylus megistus

Answer 10

C

Question 11

Triatoma infestans,Rhodnius prolixus,Panstrongylus megistus

main area of differentiation

Answer 11

antennae insertion

Question 12

False about Family Reduviidae
A. painful bite usually at mouth and eye
B. bite area is numb because of injected anticoagulant
C. may cause anaphylactic reaction
D. some members may be vector of Hymenolepis nana

Answer 12

D - Trypanosoma cruzi

Question 13

three means of transmitting Chagas’ disease: enumerate

Answer 13

1. blood feeding
2. blood transfusion with infected blood
3. vertical transmission

Question 14

two drugs that can be used for early chronic phase of Chagas’ disease

Answer 14

nifurtimox & benznidazole

Question 15

Why is Chagas disease hard to diagnose?

Answer 15

sample is retrieved from CSF to check for presence if amastigotes

Question 16

What kind of houses are susceptible to Triatoma infestans infestation, and why?

Answer 16

in PH: nipa houses are most susceptible for vector

habitation; vector would go to kawayan and rotting wood

Question 17

why are tarsal pads and wings ideal sites @ Triatoma infestans for insecticide action?

Answer 17

Wings are permeable to insecticide, while Tarsal pads are sticky and when gets in contact with
insecticide treated walls, can die.

Question 18

Why is the common bedbug considered to be “Wingless”?

Answer 18

there is no apparent wing but there is a wing pad….wings are vestigial

Question 19

false about Family Cimicidae
A.light brown in color, but gets reddish brown before feeding
B.nocturnal biter
C.characteristic bite pattern is a 1-2-3 linear pattern
D.numbs the bitten area

Answer 19

A - it becomes reddish brown AFTER feeding

Question 20

false about family Cimicidae
A.secretes a sweet smelling fluid
B.mode of transmission is through attachment to clothing
C.they leave tell-tale black spots on surfaces over which they travel

Answer 20

A - pungent ang amoy

Question 21

members of family Cimicidae have vestigial wings. these are represented by __

Answer 21

mesothoracic pads

Question 22

How are members of family Cimicidae differentiated by gender?

Answer 22

male – pointed

female – rounded

Question 23

Which is false about family Cimicidae?
A. females require an additional blood meal before
depositing the eggs
B. cannot differentiate day from night
C. stink glands opening found at the last segment of the
thorax between the hind legs

Answer 23

B - they have a sense of photoperiodicity

Question 24

Which is false about family Cimicidae?
A. eggs are whitish; 2-8 eggs laid per day in cracks,
crevices & under wallpaper
B. oviposition in same place thus eggs accumulate in one
group
C. 4 nymphial instars

Answer 24

C - 5, not 4

Question 25

Which is false about family Cimicidae?
A. abdomen is red if it’s fully engorged
B. chronic feeding reduces hemoglobin count
C. no anti-bed bug parasites cause anaphylactic shock

Answer 25

C - some do

Question 26

identify the preventive measure for cimicosis: pesticide products containing aerosol propellants that
release their contents at once to fumigate an area

Answer 26

total release fogger

Question 27

Which is false?
A. Smoke generators only target adult bed bugs
B. anti-pruritic may be used to treat both cimicosis & reduviid bites
C. Bed bugs like cold environment

Answer 27

C - they hate the cold