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[[Image:Insect Eyes.jpg|thumb|right|150px|Alan Hadley]]
[[Image:Insect Eyes.jpg|thumb|right|150px|Alan Hadley]]
[[Image:Blow fly head.jpg|thumb|right|150px|Blowfly Head Close Up - Martin Pot - Wikimedia Commons]]
[[Image:Blow fly head.jpg|thumb|right|150px|Blowfly Head Close Up - Martin Pot - Wikimedia Commons]]
[[Image:Aedes aegypti.jpg|thumb|right|150px|''Aeges aegypti'' - Wikimedia Commons]]
The phylum arthropoda is divided into several subphylums including Chelicerata (which includes the arachnids), Myriapoda, Hexapoda (which includes the insecta), Crustacea and Trilobitomorpha. These are then divided into many classes. The two of major veterinary importance are the insecta and [[Arachnida|arachnida]] classes.
The phylum arthropoda is divided into several subphylums including Chelicerata (which includes the arachnids), Myriapoda, Hexapoda (which includes the insecta), Crustacea and Trilobitomorpha. These are then divided into many classes. The two of major veterinary importance are the insecta and [[Arachnida|arachnida]] classes.