Hexapoda Flashcards
1
Q
What are the synapomorphies of Hexapoda: insecta?
A
- six legs
- one pair of wings
- not modified appendages
- grown from the cuticle
- 3 tagmata
- head
- thorax
- abdomen
- mandibles
- maxillae
- one pair of antennae
2
Q
What are springtails?
A
- hexapod but not an insect
- important for decomposition in forests
- has an organ under them that if disturbed causes it flip out and do a summersult
- has 6 legs, but do not have external mouth parts
- insects do have an external mouth part
- six legs
3
Q
why are insects important?
A
- negative: kills lots of people for disease
- malaria, typhus
- pollination
- crucial for the ecosystem
4
Q
How many insects are there?
A
- a million describe species of insects
- 30M un-described, especially in the tropics
- there are big ones and small ones
- occupy every habitat
5
Q
how do insects eat?
A
parasitic, predators, parasitoids, saprophagous, phytophagous
6
Q
parasitic
A
- compressed
- smaller spaces
- prevents host from clawing you off
- flat dorsally or ventrally
- wingless
7
Q
Predator
A
- fast
- pursuit predators
- mandibles and large eyes
8
Q
parasitoid
A
- free living and parasitic stage
- kill their host
9
Q
saprophagous
A
- burying
- eat dead things
10
Q
phytophagous
A
- plant eaters
- apostomatic
- fecal shield
11
Q
mandibulate
A
crush, bite
12
Q
hasteullate
A
piercing, suck
