Transcript morphology-collembola-thysanura.ppt

Basic Insect Morphology
Why learn insect parts?
Insect parts are used to differentiate
between different kinds of insects
BODY REGIONS
HEAD
ANTENNAE
EYES
MOUTHPARTS
ANTENNAE
Consists of three main parts:
1. Scape
2. Pedicel
3. Flagellum
FILIFORM
MONOLIFORM
CLUBBED
LAMELLATE
SERRATE
ELBOWED
PECTINATE
PLUMOSE
ARISTATE
EYES
Simple Eyes
Compound Eyes
Mouthparts
Chewing
Piercing-Sucking
THORAX
LEGS
WINGS
Structure of Leg





Coxa
Trochanter
Femur
Tibia
Tarsus
TYPES OF WINGS
ABDOMEN
CERCI
OVIPOSITOR
Terminology
Apterygote: Primitively Wingless
Pterygote: Winged
Terminology - Metamorphosis
No metamorphosis: Ametabolous
Incomplete: Hemimetabolous
Gradual: Paurometabolous
Complete: Holometabolous
Complete Metamorphosis
Egg
Adult
Larva
Pupa
No Metamorphosis
Egg – Juvenile - Adult
ORDERS
Collembola
Thysanura
CLASSIFICATION
Kingdom:
Phylum:
Class:
CLASSIFICATION
Kingdom: Animalia
Phylum: Arthropoda
Class:
Insecta
ORDER COLLEMBOLA
• Soft bodied globular to elongated, and
pigmented (grayish!)
• No metamorphosis: Ametabolous
• Apterygote
ORDER COLLEMBOLA
• Compound eyes absent or reduced
• Ventral tube (COLLOPHORE)
• Antennae present
• Spring mechanism
formed by:
- Tenaculum
- Furcula (springtail)
Furcula
HABITAT: Rich soil, leaf litter, under
bark or decaying wood, on
water surface, moist
areas….Virtually anywhere!
IMPORTANCE: Add nutrients via feces
and facilitating
decomposition
ORDER THYSANURA
• Body relatively flat, often with scales,
grayish
• No metamorphosis:
Ametabolous
• Apterygote
ORDER THYSANURA
• Compound eyes widely separated
• Ocelli present or absent
• Antennae present
• Abdomen with a median caudal filament
• Abdomen with a pair of cerci
HABITAT:
• Leaf litter
• Under bark
• Human dwellings
IMPORTANCE:
• Pest in urban areas
• Feed on paper, cotton & plant debris