Organismal Biology — Lab 10 online
ANIMAL DIVERSITY  II:
Ecdysozoa

Download the instructions for this lab.


ECDYSOZOA
(Animals that molt)







Phylum NEMATODA (roundworms):

Enterobius (human pinworm)

Ascaris (female on left, male on right)

CDC worker holding a mass of Ascaris worms retrieved from the intestines of a single child in Kenya

Phylum NEMATOMORPHA (horsehair worms):

Horsehair worms are often parasitic inside insects

Phylum TARDIGRADA ("water bears" or tardigrades):


CLICK FOR TARDIGRADE VIDEO



Phylum ONYCHOPHORA ("velvet worms"):


CLICK FOR ONYCHOPHORA: VELVET WORM VIDEO









Phylum ARTHROPODA
(animals with jointed legs):

Subphylum or Class Trilobita:



Subphylum or Class Crustacea:












Subphylum Chelicerata:




Anatomy of a spider




Subphylum Uniramia — myriapods









Subphylum Uniramia — Class Insecta:

Silverfish (order Zygentoma=Thysauura)

Dragonflies (order Odonata, above and right)

Anatomy of a Grasshopper (order Orthoptera)

Praying mantis (order Mantodea)

Roach (order Blattaria)

 
Fleas (order Siphonaptera)
   
Termites (order Isoptera)

	True bugs (order Hemiptera) Notice the piercing mouthparts and the wings whose transparent rear tips overlap when the wings are folded back

Cicada (order Homoptera)

---

Butterflies (order Lepidoptera)

Flies (order Diptera)

Beetles (order Coleoptera) The leathery outer wings   (forewings) are protective;   the hind wings,   used for flying, are   hidden underneath.

Order Hymenoptera:   social insects   (bees, wasps,   and ants)

—— revised March 2020 ——