Transcript thysanoptera-siphonaptera-neuroptera.ppt

Orders
Thysanoptera
Siphonaptera
Neuroptera
THYSANOPTERA
"thysanos” = fringe + "ptera" = wings
“Thrips”
THYSANOPTERA
• Very small
• Antennae short
• Rasping-sucking mouthparts
• Front and hind wings with a dense
fringe of long hairs (many wingless
species)
THYSANOPTERA
Metamorphosis
Paurometabolous
(gradual)
egg, nymph, adult
THYSANOPTERA
Economic Importance
• Many thrips are pests of plants, especially
grain crops, fruits and vegetables, and
ornamentals
• They can transmit plant pathogens
• Predatory thrips are beneficial
Order NEUROPTERA
Lacewings, Antlions, Dobsonflies
Metamorphosis
Holometabolous
(complete)
(egg, larva, pupa, adult)
Green Lacewing
Most adults are green
Chewing mouthparts
Golden or copper-colored
eyes
Front and hind wings similar
in shape and size
Long threadlike antennae
Neuroptera
Terrestrial: important predators
- lacewings: aphids, scale insects, thrips
- antlions: larvae build pits for ants
Aquatic: dobsonflies
- feed on aquatic insects
- serve as food for fish
Siphonaptera
Siphonaptera
“a” = without + “ptera” = wings
Fleas
1. Body bilaterally
flattened
2. Piercing/sucking
mouthparts
3. Hind coxae enlarged
for jumping
Metamorphosis
Holometabolous
Egg  Larva  Pupa  Adult
Where do siphonapterans live?
- larvae live off host
- adults live on host
What do siphonatperans eat?
- larvae are scavengers
- adults eat blood
Economic Importance
- Irritating bites
- Transmit disease
- BUBONIC plague and the rat flea