Module 7 True Bugs Flashcards Preview

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Flashcards in Module 7 True Bugs Deck (21):
1

true bugs general info

Order Hemiptera
-largest hemimetabola order of insects
-mostly ectoparasites
-major crop pests

2

homoptera

aphids, cicadas, leafhoppers
"same wing"
hold wings roof like
sap plant feeders

3

heteroptera

stink bugs, kissing bugs
"half wing"
hold wings flat on abdomen
some sap feeders and all blood feeders

4

heteroptera anatomy

forewing is half leathery, halt membranous
hindwing is completely membranous

5

probosics

sucking mouthpart of heteroptera (inserts this to feed)
has 3 segmented labium which encloses the stylets

6

kissing bugs taxonomy

family Reduviidae
subfamily Triatominae

*Triatoma infestans

7

triatomine anatomy
(kissing bugs)

long snout-like head
aposomatic coloring (mainly black with red/orange spots)
connexivum (contrasting pattern around abdomen)
abdomen in membranous so it can expand

8

triatomine life history

hemimetabolous (egg - X5 nymph - adult)
life cycle last 1-2 years
nymph lacks wings and require blood meal to molt

9

sylvatic

behavior in which triatomine feeds on wild animals and inhabit natural hiding places

10

peridomestic

behavior in which triatomine feeds on domestic animals and uses their enclosure for shelter

11

domestic

behavior in which triatomine is dependent on humans (or pets) for blood/shelter

12

chagas disease

parasite: Trypanosoma cruzi
vectors: *triatoma infestans (kissing bugs), Rhodium prollixus, Panstrongylus megistus
affects mostly poor people

13

transmission cycle for chagas disease

parasite Trypanosoma cruzi infects feces of kissing bug which is then rubbed into wounds
also can be passed from mother to baby, thru blood transfusion, or organ transplants

14

acute chagas disease

begins with swelling at parasite entry point (Romana's sign)
subcutaneous and muscular development of parasite which then enters the bloodstream

15

chronic chagas disease

damage to heart muscle, dizziness, chest pains, weakness, fatigue
infected person causes a social and economic burden on family
symptoms make take years to show

16

prevention and control of kissing bugs

improved housing, insecticides, blood/organ screening, medicines

17

bed bugs taxonomy

family cimicidae
3 human species:
*cimex lectularius
cimix hemipterus
leptocimex boueti

18

bed bug anatomy

small, dorso-ventrally flattened
stylets/proboscis (piercing mouthparts)
wingless

19

bed bug life history

mating style is traumatic insemination
hemimetabolous (egg - X5 nymph - adult)
nymphs are translucent until blood meal

20

bed bug behavior / ecology

hide in cracks / crevices, mattresses, furniture
not related to sanitation
can live up to a year without feeding

21

public health importance of bed bugs

can transmit 27 human pathogens thru mechanical transmission (but not know for it)
unpleasant bite reactions
emotional trauma