Lecture 6 Flashcards
1
Q
Order: Hemiptera
A
- True bugs
- Hugh order: Diverse
2
Q
How many species fo hemiptera?
A
50-70,000 species
3
Q
How many families of Hemiptera?
A
About 100 families
4
Q
How many species of hemiptera in Ireland
A
About 770 species
5
Q
Hemiptera characteristics
A
- Half winged
- 2 parts to wings (generally), forewings modified by hardening
- Mouthparts- rostrum
- Piercing/ sucking mouth parts: can be sap-sucking plat feeder, blood sucking ectoparasite or predator
6
Q
Hemimetabolous
A
- Incomplete metamorphosis
7
Q
How may sub orders?
A
- 2
- Based on wings
-Heteroptera
-Homoptera
8
Q
Sub-order Heteroptera
A
- Known as true bugs
- Herbivores and carnivores
- Bed bugs, shield bugs, bugs on or in water
- 50,000 species worldwide
9
Q
Shield Bugs
A
- Family: Acanthosomatidae
- ‘Stink bugs’ in USA
- 21 species in Ireland
- Parent shieldbug (Elasmucha grisea)
10
Q
Hemiptera
A
- Damage done by plant-feeding species
1. Direct removal of plant nutrients
2. Injection of phytotoxic saliva (causing growth distortions)
3. Excretion of ‘honeydew’ waste- clogs plant stomata; inhibits gas exchange across leaf-lamina and inhibits photosynthesis; provides a medium for growth of sooty moulds etc- blocks light and photosynthesis
4. Transmission of plant-pathogenic viruses
11
Q
‘Caspid’ or ‘mirid’ bugs
A
- Family: Miridae
- Brown (potato) capsis (Calocoris norwegicus)
- Green capsid (Lygocoris pabulinus)
- Causes damage to potato tops, sugar beet, tree foliage, peas
12
Q
Bed bugs
A
- Family: Cimicidae
13
Q
Sub-order: Homoptera
A
- Forewings same texture throughout
-Held roof wise over body rather than flat - All vegetarian
- Cicadas, leaf hoppers, aphids
14
Q
Leaf-hopper
A
Family: Cicadellidae
15
Q
Frog-hopper
A
Family: Delphacidae
