1 BIO2135 – Animal Form and Function Phylum Arthropoda Pt. I Miller and Harley Chap. 14 BIO2135 – Animal Form and Function Arthropoda Phylogeny Fig. 14.2 BIO2135 – Animal Form and Function Arthropoda Taxonomy ● Sub-phylum Trilobitomorpha – Marine, all extinct, 3 longitudinal lobes ● Sub-phylum Chelicerata – 2 tagma (prosoma & opisthosoma), 1st pair of appendages modified into feeding chelicera ● Sub-phylum Myriapoda – Body divided into head and trunk, 4 pairs of head appendages, uniramous appendages ● Sub-phylum Crustacea – Mostly aquatic, head with 2 pairs of antennae, one pair of mandibles, 2 pairs of maxillae, biramous appendages ● Sub-phylum Hexapoda – Body divided into head, thorax and abdomen; 5 pairs of appendages on head, 3 pairs uniramous appendages on thorax only BIO2135 – Animal Form and Function Metamerism & Tagmatization BIO2135 – Animal Form and Function Arthropod Exoskeleton Fig. 14.3 BIO2135 – Animal Form and Function Modifications & Articulations Fig. 14.4
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1
BIO2135 – Animal Form and Function
Phylum Arthropoda Pt. IMiller and Harley Chap. 14
BIO2135 – Animal Form and Function
Arthropoda Phylogeny
Fig. 14.2
BIO2135 – Animal Form and Function
Arthropoda Taxonomy● Sub-phylum Trilobitomorpha
– Marine, all extinct, 3 longitudinal lobes
● Sub-phylum Chelicerata– 2 tagma (prosoma & opisthosoma), 1st pair of
appendages modified into feeding chelicera
● Sub-phylum Myriapoda– Body divided into head and trunk, 4 pairs of
head appendages, uniramous appendages
● Sub-phylum Crustacea– Mostly aquatic, head with 2 pairs of antennae,
one pair of mandibles, 2 pairs of maxillae, biramous appendages
● Sub-phylum Hexapoda– Body divided into head, thorax and abdomen;
5 pairs of appendages on head, 3 pairs uniramous appendages on thorax only
BIO2135 – Animal Form and Function
Metamerism & Tagmatization
BIO2135 – Animal Form and Function
Arthropod Exoskeleton
Fig. 14.3
BIO2135 – Animal Form and Function
Modifications & Articulations
Fig. 14.4
2
BIO2135 – Animal Form and Function
Ecdysis
Fig. 14.5
BIO2135 – Animal Form and Function
Ecdysis
Fig. 14.5
BIO2135 – Animal Form and Function
Ecdysis
Fig. 14.5
BIO2135 – Animal Form and Function
Spider Molting
BIO2135 – Animal Form and Function
Crab Molting
BIO2135 – Animal Form and Function
Class Merostomata
Fig. 14.8
3
BIO2135 – Animal Form and Function
Class ArachnidaOrder Aranea
Fig. 14.12
BIO2135 – Animal Form and Function
Book Lung
Fig. 14.9
BIO2135 – Animal Form and Function
Sense Organs
Fig. 14.10 & 14.13
BIO2135 – Animal Form and Function
ExcretionFig. 28.13 & 28.14
BIO2135 – Animal Form and Function
Venomous SpidersBlack Widow Brown Recluse
Fig. 14.14
BIO2135 – Animal Form and Function
Brown Recluse Haemolytic Venom
4
BIO2135 – Animal Form and Function
Class ArachnidaOrder Scorpionida
Fig. 14.11
BIO2135 – Animal Form and Function
Class ArachnidaOrder Acarina
Fig. 14.17
BIO2135 – Animal Form and Function
Sub-Phylum MyriapodaClass Diplopoda
Collum
Antenna
Eye
MandibleMaxilla
Fig. 14.9
BIO2135 – Animal Form and Function
Sub-Phylum MyriapodaClass Chilopoda
Fig. 14.9
Antenna
2nd Maxilla
1st Maxilla
Maxillipede(Venom Gland)
Eye
1st Leg
BIO2135 – Animal Form and Function
Next Class – Arthropoda Pt. II
Miller and Harley Chap. 15
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