Arthropoda - Insecta - Hemiptera Flashcards
Distinctive features of Hemiptera
Triangle shape on back
Basal portion of front wing is thickened and leathery, apical portion is membranous
2 species of bed bugs
- Cimex lectularis (human bed bug in cities)
- Cimex hemipterus (tropical bed bug)
DO NOT transmit any disease!
Suborder Reduviidae
Includes true bugs (Triatoma, Panstrongylus and Rhodnius are assassin bugs that transmit Chaga’s)
Uses proboscis to inject saliva that liquified the insides, and then sucks them out
Order Siphonaptera
Fleas! Complete metamorphosis, drink blood, species specific, transmit disease (bubonic plague, endemic typhus, tularemia)
Chigoe
Tunga penetrans
Juveniles get onto skin, burrow and develop
Mostly on legs/feet/butt
Eggs are on the sand
Females lay eggs and sit under the skin - size of a pea - even when they die body is still there
Inflammation and formation of ulcers follows, and secondary infection can result in tetanus or gangrene
Ctenocephalides felis
Cat flea
Long hind legs for jumping
Pulex irritans
Human flea
Xenopsylla cheopis
Oriental rat fleas
Responsible for transmitting Yersinia pestis, the causative agent of plague
3 forms of plague
Bubonic (form ulcers, inflammation with lymph nodes)
Pneumonic (occupy lungs)
Septocemic (in blood - causes sepsis)
Echidnophaga gallinaceus
Sticktight flea
Attaches to birds and forms ulvers on head and neck
Can attack many other animals
Have been found infected with plague and rickettsia, but its only minor transmission since females are permanently fastened to host
Name of the type of wings they have
Hemelytra
Names for: Chigoe Human flea Cat flea Dog flea Oriental rat flea
- Tunga penetrans
- Pulex irritans
- Ctenocephalides felis
- Ctenocephalides canis
- Xenopsylla cheopis
