Hemimetabolous Insects 1 Flashcards
What 11 orders are hemimetabolous?
Hemiptera
Orthoptera
Psocoptera
Odonata
Blattodea
Ephemeroptera
Plecoptera
Mantodea
Dermaptera
Pthiraptera
Isoptera
What are immature Ephemeroptera called, and where are they found?
Naiads
aquatic environment
What mouthparts do immature and mature Ephemeroptera possess?
immature- chewing
mature- none, they don’t feed
Where do Ephemeroptera spend the majority of their lifecycle?
underwater
How long do adult Ephemeroptera live?
They are ephemeral, short-lived, ranging from 30 minutes to a day
Why are Ephemeroptera important?
as food and water quality indicators
What is unique about Ephemeroptera emergence?
the emerge as large crowds
What environment do immature Odonata live in?
aquatic
What mouthparts do immature and mature Odonata have?
chewing
What diet do dragonflies have?
carnivorous predator
What is unique about dragonfly wings and flight?
they are agile fliers
they cannot fold wings over the abdomen
What is the oldest insect?
dragonflies
What are claspers?
male genitalia at the tip of their abdomen
How do dragonflies mate? (3)
Male claspers grab head of females
Female curls her abdomen down
Male genitalia, found in the middle of the abdomen, injects sperm into the female oviduct
How do damselflies differ from dragonflies?
they are smaller and more delicate
What mouth parts do orthoptera have?
chewing
What diet do orthoptera have? (2)
most are phytophagous (herbivores)
some are omnivores
What is unique about orthoptera?
they produce sounds
How do grasshoppers lay eggs? (2)
they oviposit egg mass in the soil
egg overwinters and emerges during spring
How many molts do grasshopper nymphs go through?
5-6 nymphs
What kind of legs do grasshopper have? (5)
Saltatorial
Enlarged coxa
Small or infused trochanter
Large and rigid femur
SPiny tibia
What is tympanum, what insect has it, and where is it found?
ear
crickets
legs
How do cricket species differ?
some are wingless
What is unique about crickets?
they sing and hear songs
what are katydids?
leaf insects
What chewing parts do Mantodea immature and mature have?
chewing mouthparts
What is ootheca, and what orders have it?
cases with eggs deposited
Mantodea and Blattodea
What kind of legs do Mantodea have?
raptorial legs
how do male and female Mantodea differ?
males are smaller
What mouthparts do Blattodea have, and what is their diet?
chewing
omnivorous
Where are Blattodea found?
Found in more tropical than temperate
What kind of wings do Blattodea have?
tegmina- feathery wings
Why do cockroaches have odors?
fat tissues take on food odors
What mouth parts do Isoptera have, and what do they feed on?
chewing mouthparts
feeds on cellulose
Where are Isoptera found? (2)
mood tunnels
associated with soil and moisture
Why are Isoptera important?
they aid in natural decomposition
How do Isoptera breakdown wood?
rely on internal gut symbionts called flagellates to digest wood
Are Isoptera social?
yes
What mouthparts do Dermaptera have?
chewing mouthparts
What are two distinct features of Dermaptera?
ear-shaped hindwings
dinstinctive cerci
What is a common myth about Dermaptera?
they enter ear and feed on the brain
