LO 1.1 - Insects and other arthropods Flashcards
Outline damage and lifecycle Aphids, Mites, damaging stages of Weevils and Beetles above and below ground , Carrot root fly larvae, Sawfly larvae, Crane fly larvae (Leatherjackets), Whitefly, Capsids and Thrips
Question
What are Arthropods?
An arthropod is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and jointed appendages.
- Arachnids
- Crustaceans
- Insects
- Myriapods
Question
What are some insect body parts?
Body parts of an insect.
- Antenna
- Compound Eyes
- Head
- Thorax
- Abdomen
- Mandible (Jaws)
- Fore wing
- Hind wing
- Three pairs of legs
Question
What is an Exoskeleton?
An Exoskeleton is…
Hard outer covering made mostly of chitin
– No inner skeleton like bones
– Growth occurs in spurts after shedding exoskeleton (moulting)
Question
What is Chitin?
Chitin is…
A tough, protective, semitransparent substance, forming the principal component of arthropod exoskeletons and the cell walls of certain fungi.
Question
What does moulting mean?
Moulting is….
Periodic shedding of the exo-skeleton (Cuticle) in arthropods or the outer skin in reptile
Question
What are two types of Metamorphosis?
The two types of Metamorphosis are…
- Complete
- Incomplete
Question
What is Complete Metamorphosis?
Complete Metamorphosis comprises of…
- Each stage of the life cycle is completely different
- Egg – larva – pupa – adult
Question
What is Incomplete Metamorphosis?
Incomplete Metamorphosis comprises of…
- The egg
- Nymphs
- Adult
- All stages are similar to adult.
- Only internal changes (plus sometimes added wings)
Question
Describe Insects Head.
INSECT HEAD
- Compound eyes
- – Sometimes an additional three simple eyes
- Pair of antennae
- Mouthparts
Question
Name 4 different insect mouthpiece functions
Functions of insects mouths.
- Chewing
- Piercing-sucking
- Siphoning
- Sponging
Question
Which insects chew?
Beetles
Question
Which insects Suck/pierce?
Aphids, White flies, Wievil and more
Question
How do flies feed?
By sucking with therir Labellum.
Question
Which insects feed from Nectar?
Moths and Butterflies
Question
What are the symptoms of insect biting on plants.
Damage and Symptoms of insects on plants.
- Holes
- Tunnels
- Skeletonising
- Leaf mining
- Flower/leaf distortion
- Root destruction
Question
What are the symptoms of Insect Sucking on Plants.
Damage and Symptoms of insects sucking on plants.
- Sap removal
- Mottling of foliage
- Virus transmission
- Honeydew
- Sooty moulds
- Saliva reaction
Question
What are the parts of the Thorax?
Insects Thorax
- Six segments
- Three pairs of legs
- Two to four wings (optional). In beetles Elytra + wings
Describe
The insects Abdomen.
Insects Abdomen
- Eleven segments – Can be fused together
- Contains most of the Digestive, Respiratory, Excretory and Reproductive systems
Question
What are some insect pests?
Insect pests.
- Aphids
- White fly
- Caterpillars
- Leaf miners
- Scale insects
- Carrot root fly
- Leather jackets
- Black vine weevil
- Sciarids
- Thrips
