Order Hemiptera Flashcards
(27 cards)
False about Order Hemiptera
A. have one pair of wings
B. mouthparts - haustellate
C. metamorphosis is hemimetabulous
A - two pairs of wings
What does haustellate mouthpart mean?
typically of the piercing and sucking type without palpi
Mouthpart is for sucking & proximal wing half is leathery + distal wing half is membranous
A.bug
B.beetle
C.both
A
Mouthpart is for chewing & entire wing is leathery
A.bug
B.beetle
C.both
B
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
E - forewings cover the hindwings
(a) process of moulting is called __
(b) hormone responsible for moulting is called __
(A)ecdysis
(B)ecdysone
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
D - blood molt is necessary before each moult
Which is most common in tropical countries like the Philippines?
A.Triatoma infestans
B.Rhodnius prolixus
C.Panstrongylus megistus
A
has a juvenile hormone which keeps the insect young
A.Triatoma infestans
B.Rhodnius prolixus
C.Panstrongylus megistus
B
antenna inserted near compound eyes
A.Triatoma infestans
B.Rhodnius prolixus
C.Panstrongylus megistus
C
Triatoma infestans,Rhodnius prolixus,Panstrongylus megistus
main area of differentiation
antennae insertion
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
D - Trypanosoma cruzi
three means of transmitting Chagas’ disease: enumerate
- blood feeding
- blood transfusion with infected blood
- vertical transmission
two drugs that can be used for early chronic phase of Chagas’ disease
nifurtimox & benznidazole
Why is Chagas disease hard to diagnose?
sample is retrieved from CSF to check for presence if amastigotes
What kind of houses are susceptible to Triatoma infestans infestation, and why?
in PH: nipa houses are most susceptible for vector
habitation; vector would go to kawayan and rotting wood
why are tarsal pads and wings ideal sites @ Triatoma infestans for insecticide action?
Wings are permeable to insecticide, while Tarsal pads are sticky and when gets in contact with
insecticide treated walls, can die.
Why is the common bedbug considered to be “Wingless”?
there is no apparent wing but there is a wing pad….wings are vestigial
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
A - it becomes reddish brown AFTER feeding
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
A - pungent ang amoy
members of family Cimicidae have vestigial wings. these are represented by __
mesothoracic pads
How are members of family Cimicidae differentiated by gender?
male – pointed
female – rounded
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
B - they have a sense of photoperiodicity
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
C - 5, not 4
