ENTM Exam 4

straight wings

blends into environment, covered w materials from the environment, resembles objects not eaten

• Immatures resemble adults
• Wings absent, never had wings as adult
• Mouthparts of immature same as adult
• Habitat of immature same as adult

• Habitat of immature and adults different
• Mouthparts of immatures and adults differents
• Niche of immatures and adults different

• Endocrine gland
• Closely associated w esophagus
• Secretes juvenile hormone

"Modern winged insects" that have ability to fold wings, includes all insect orders except Ephemeroptera and Odonata

advertises is presence using bright colors, eye spots

• Immatures called NYMPH
• Lack pupal stage
• Wing pads present in immatures (when adults have wings)
• Same mouth type, habitat, food pref

• Pupal Stage
• Immatures called Larvae
• Habitat and niche usually different
• Mouthtypes usually different

• Collembola (springtails)
• Thysanura (silverfish, firebrats)

Wings develop externally as wing pads in the immature stage

without change

half change

• stimulates immature to initiate apolysis
• large volumes can overide juv hormone
• permits insect to form the adult

• on 4th ab seg of Collembola
• the springing organ

• Coleoptera
• Lepidoptera
• Hymenoptera
• Diptera

time period between molts

• from neurosecretory cells in the brain
• light/temp stimulated
• stimulates prothoracic gland to produce ecdysone

based on rules of zoological nomenclature

• model distasteful
• mimic palatable
• mimic less common

Immature form between molts

• immature of holometabolous
• wings develop internally

little change

• wings dev internally
• no wing pads

• model and mimic in same nest
• model does selecting

• Paurometabola
• Hemimetabola

complete change

inhibits dev to adult stage

• insects with wings or whose ancestors had wings but wings now missing
• Headlice

mimic and model both distasteful

imatures of ametabolous

• Aquatic immatures of hemimetabolous
• Always have winged pads

adult form

• fungi, mold, spores, decay
• moist places & organic soil

change in form or shape

• Immature of paurometabolous
• Compound eyes present
• Reproductive organs not complete

Stimulated by brain hormone to produce ecdysone

genus, species and author's name

• bristle
• tail

• glue
• bar

tooth

• for a day
• wings