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1. ZOO 115 Invertebrate Zoology
Phylum Arthropoda
Subphylum Hexapoda

2. Subphylum Hexapoda
General Characteristics
 Includes insects and
springtails.
 Three tagma
 head
 Thorax
 Abdomen
 3 thoracic segments each
with 1 pair of legs
 1 pair of antennae
 3 sets of jaws
 gas exchange via tracheae
and spiracles
 Malpighian tubules
http://www.cartage.org.lb/en/themes/Sciences/Zoology/Insects/InsectAnatom
y/Introduction/Introduction.htm
http://basicentomology.ifas.ufl.edu
http://basicentomology.ifas.ufl.edu
http://www.earthlife.net/insects/anatomy.html

3. Subphylum Hexapoda
Taxonomy
 Class Insecta
 Class Entognatha (includes springtails)
 mouthparts hidden - sunk into a depression on the
surface of the head.
http://www.extension.umn.edu/yardandgarden/YGLNews/images/springtail
s-ygl.JPG
http://soils.usda.gov/sqi/concepts/soil_biolog
y/images/ATLAS227_LR.jpg

4. Class Insecta
 Have successfully
invaded virtually every
terrestrial habitat and
some marine
 They are predators,
herbivores, scavengers,
decomposers and
parasites.
 ~ 1 million sp.
 200 million
insects/human
http://www.bestoday.com.au/billylids/images/insects.jpg

5. http://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Pollination_Bee_Dandelion.JP
G/800px-Pollination_Bee_Dandelion.JPG
Class Insecta - Importance
 Agriculture
 pollination
 pests
 pest control
 Disease
 vectors
 Ecology – food webs
 prey
 predators
 decomposers
80% of crops
http://pubs.caes.uga.edu/caespubs/pubcd/C835-4.jpg
http://www.e-nema.de/en/images/biological02/cyclus.gif
http://tiee.ecoed.net/vol/v3/experiments/soil/img/soil_food_web%5BHR%5D.jpg
http://www.emmitsburg.net/gardens/articles/frederick/2006/photos/termites_large.jpg

6. Class Insecta – General
Morphology
 Head
http://basicentomology.ifas.ufl.edu
http://basicentomology.ifas.ufl.edu
Biting or chewing
Piercing/sucking
http://basicentomology.ifas.ufl.edu
http://basicentomology.ifas.ufl.edu
Sponging
http://basicentomology.ifas.ufl.edu
Siphon
 Mouthparts

7. http://basicentomology.ifas.ufl.edu
Class Insecta – General
Morphology
 Thorax
http://basicentomology.ifas.ufl.edu
http://basicentomology.ifas.ufl.edu
Running
http://basicentomology.ifas.ufl.edu
Digging
http://basicentomology.ifas.ufl.edu
Swimming
Raptorial
http://basicentomology.ifas.ufl.edu
Jumping
(saltatorial)
http://basicentomology.ifas.ufl.edu
Pollen Collection
http://www.biologie.uni-hamburg.de/b-online/ibc99/koning/leg.gif
http://basicentomology.ifas.ufl.edu
Membranous
Hemelytra
http://basicentomology.ifas.ufl.edu
 limbs
 wings
http://basicentomology.ifas.ufl.edu
Elytra
http://basicentomology.ifas.ufl.edu
Halteres

8. http://www.eurekah.com/i
mages/chapters/Vigoreau
x06Josephson.jpg
From Brusca and Brusca
Primitive
Direct Muscle Attachment
Class Insecta - Locomotion
http://www.ndsu.nodak.edu/entomology/topics/movement.htm
http://z.about.com/d/healing/1/0/0/O/gtotem_dragonfly.jpg
Fromn Ruppert, Fox and Barnes. 2004
Indirect Muscle Attachment
Advanced
http://www.abc.net.au/quantum/stories/m78599.jpg
http://www.ndsu.nodak.edu/entomology/topics/movement.htm

9. Class Insecta – General
Morphology
 Abdomen
http://basicentomology.ifas.ufl.edu
http://basicentomology.ifas.ufl.edu
http://basicentomology.ifas.ufl.edu

10. Class Insecta – Internal anatomy
 Digestive system
http://basicentomology.ifas.ufl.edu
Apolipophorin III
Courtesy of Fabrice David, SIB Geneva

11. Class Insecta – Internal Anatomy
 Circulatory system
http://basicentomology.ifas.ufl.edu
http://www.entomology.umn.edu/cues/4015/morpology/

12. http://www.entomology.umn.edu/cues/4015/morpology/

13. http://www.entomology.umn.edu/cues/4015/morpology/

14. http://www.entomology.umn.edu/cues/4015/morpology/
http://www.entomology.umn.edu/
cues/4015/morpology/