Phylum ArthropodaPhylum ArthropodaSubphylum UniramiaSubphylum Uniramia

TaxonomyTaxonomy

• Myriapods- Class Chilopoda (centipedes) Myriapods- Class Chilopoda (centipedes) and Class Diplopoda (millipedes).and Class Diplopoda (millipedes).– Two body regions- head and trunk.Two body regions- head and trunk.– Pair of legs on every segment.Pair of legs on every segment.

• Class Insecta (Insects)Class Insecta (Insects)– Three body regions- head, thorax, and Three body regions- head, thorax, and

abdomen.abdomen.– Three pair of walking legs.Three pair of walking legs.

General CharacteristicsGeneral Characteristics

• One pair of antennae. One pair of antennae.

• Respiration is through tubes called Respiration is through tubes called tracheae. tracheae.

• All appendages are uniramous.All appendages are uniramous.

• Mostly terrestrial or aerial- some aquatic Mostly terrestrial or aerial- some aquatic forms.forms.

• Chitinous exoskeleton with waxy cuticle.Chitinous exoskeleton with waxy cuticle.

Class ChilopodaClass Chilopoda

• Predatory.Predatory.

• Centipedes possess maxillipeds complete Centipedes possess maxillipeds complete with poison fangs to subdue prey.with poison fangs to subdue prey.

http://www.biwook.net/gallery/heading-bush/photos-by-ioan/faune-australienne/3195-faune-australienne-centipede.jpg

Class DiplopodaClass Diplopoda

• Herbivorous.Herbivorous.

• Diplosegments- double trunk segments Diplosegments- double trunk segments with two pair of legs. These probably were with two pair of legs. These probably were derived from single segments that fused in derived from single segments that fused in pairs. pairs.

http://www.swva.net/fred1st/millipede.jpg

http://www.wmwd.com/assets/images/garden/Girl%20with%20millipede.jpg

Class InsectaClass Insecta

• Insects are the most diverse class of Insects are the most diverse class of animals with ~1 million named species. animals with ~1 million named species.

• Three body regions- head, thorax, and Three body regions- head, thorax, and abdomen.abdomen.

• Three pair of walking legs on thorax.Three pair of walking legs on thorax.

http://www.scottcamazine.com/photos/venomous/images/11BulletAnt_jpg.jpg

RespirationRespiration

Excretion of Excretion of NitrogenousNitrogenousWaste.Waste.

Stick InsectStick Insect

http://www.sirbooga.com/alwt/MALAYSIA/StickInsect.jpg

Beneficial InsectsBeneficial Insects

HoneybeesHoneybees

Honeybee infested with VarroaHoneybee infested with Varroa

http://agnews.tamu.edu/photos/varroa/varroa.JPG

http://www.naturepreserves.ky.gov/NR/rdonlyres/-8E9F-4A73-83EB-2D9F3891197F/0/ellis_Sympetrum_ambiguum_new.jpg

http://asab.icapb.ed.ac.uk/gallery/images/dragonfly_larva.jpg

Insect PestsInsect Pests