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Activity 22: Activity 22: Phylum ArthropodaPhylum Arthropoda
CHARACTERISTICSCHARACTERISTICS
Largest phylum in the animal kingdomLargest phylum in the animal kingdom
(+) jointed appendages(+) jointed appendages
(+) tagmatization(+) tagmatization– INSECTS: head, thorax, and abdomenINSECTS: head, thorax, and abdomen– ARACHNIDS: cephalothorax and abdomenARACHNIDS: cephalothorax and abdomen
(+) chitinous exoskeleton(+) chitinous exoskeleton
(+) tracheal system (for gas exchange)(+) tracheal system (for gas exchange)
(+) open circulatory system with (+) open circulatory system with hemolymphhemolymph
Largest phylum in the animal kingdomLargest phylum in the animal kingdom
(+) jointed appendages(+) jointed appendages
(+) tagmatization(+) tagmatization– INSECTS: head, thorax, and abdomenINSECTS: head, thorax, and abdomen– ARACHNIDS: cephalothorax and abdomenARACHNIDS: cephalothorax and abdomen
(+) chitinous exoskeleton(+) chitinous exoskeleton
(+) tracheal system (for gas exchange)(+) tracheal system (for gas exchange)
(+) open circulatory system with (+) open circulatory system with hemolymphhemolymph
SubphylumSubphylum TrilobitaTrilobita
ExtinctExtinct
(+) biramous appendages(+) biramous appendages
Subphylum TrilobitaSubphylum Trilobita
Subphylum ChelicerataSubphylum Chelicerata
CHELICERAE CHELICERAE – modified first pair of – modified first pair of appendages – grasp preyappendages – grasp prey
PEDIPALPSPEDIPALPS - Second pair of appendages - Second pair of appendages (replace mandibles)(replace mandibles)
(-) mandible; (-) antennae(-) mandible; (-) antennae
Body subdivided into Body subdivided into prosomaprosoma and and opisthosomaopisthosoma
Limulus (horseshoe crab) – Limulus (horseshoe crab) – Subphylum Chelicerata; Subphylum Chelicerata;
Class MerostomataClass Merostomata
Limulus polyphemus
Nymphon gracile (sea spider) – Nymphon gracile (sea spider) – Subphylum Chelicerata; Subphylum Chelicerata;
Class PycnogonidaClass Pycnogonida
Nymphon gracile (sea spider) – Nymphon gracile (sea spider) – Subphylum Chelicerata; Subphylum Chelicerata;
Class PycnogonidaClass Pycnogonida
Male sea spider carrying eggsMale sea spider carrying eggs
•4 pairs of legs•1 pair of pedipalps•No antennae•Marine dwellers
SPIDER – SPIDER – Subphylum Chelicerata;Class ArachnidaSubphylum Chelicerata;Class Arachnida
SPIDER – SPIDER – Subphylum Chelicerata;Class ArachnidaSubphylum Chelicerata;Class Arachnida
Gasteracantha cancriformis
(Spinybacked orbweaver)
Latrodectus spp.(black widow spider)
Brachypelma smithi
tarantula
Brachypelma smithi
tarantula
Prosoma/ /Opisthosoma
SCORPION – SCORPION – Subphylum Chelicerata;Subphylum Chelicerata;
Class ArachnidaClass Arachnida
SCORPION – SCORPION – Subphylum Chelicerata;Subphylum Chelicerata;
Class ArachnidaClass Arachnida
(forest scorpion)(forest scorpion)Heterometrus spiniferHeterometrus spinifer
TICK – TICK – Subphylum Chelicerata;Subphylum Chelicerata;
Class ArachnidaClass Arachnida
TICK – TICK – Subphylum Chelicerata;Subphylum Chelicerata;
Class ArachnidaClass Arachnida
Amblyomma americanum (lone star tick) Amblyomma americanum (lone star tick)
SizeSizeSheep tickSheep tick
Melophagus ovinus Melophagus ovinus
Deer tick mouthDeer tick mouth
MITE – MITE – Subphylum Chelicerata;Subphylum Chelicerata;
Class ArachnidaClass Arachnida
SEMDermatophagoides sp.Dust mite
SEMDemodex sp.Eyelash mite
Subphylum CrustaceaSubphylum Crustacea
Entire body covered with carapaceEntire body covered with carapace
Have mandibles (jaws) instead of Have mandibles (jaws) instead of cheliceraechelicerae
(+) 2 pairs of antennae(+) 2 pairs of antennae
Biramous appendagesBiramous appendages
Respiration through gillsRespiration through gills
Penaeus (shrimp) – Penaeus (shrimp) – Subphylum Crustacea; Subphylum Crustacea;
Class MalacostracaClass Malacostraca
Penaeus (shrimp) – Penaeus (shrimp) – Subphylum Crustacea; Subphylum Crustacea;
Class MalacostracaClass MalacostracaPenaeus esculentus Penaeus esculentus
Portunus (crab) – Portunus (crab) – Subphylum Crustacea; Subphylum Crustacea; Class MalacostracaClass Malacostraca
Portunus (crab) – Portunus (crab) – Subphylum Crustacea; Subphylum Crustacea; Class MalacostracaClass Malacostraca
Portunus rubromarginatus Portunus rubromarginatus
Portunus sebae Portunus sebae
chelipeds
LOBSTER – LOBSTER – Subphylum Crustacea; Subphylum Crustacea;
Class MalacostracaClass Malacostraca
LOBSTER – LOBSTER – Subphylum Crustacea; Subphylum Crustacea;
Class MalacostracaClass MalacostracaHomarus gammarus Homarus gammarus
Homarus americanus Homarus americanus
Daphnia (seawater flea) – Daphnia (seawater flea) – Subphylum Crustacea; Subphylum Crustacea;
Class BranchiopodaClass Branchiopoda
Daphnia (seawater flea) – Daphnia (seawater flea) – Subphylum Crustacea; Subphylum Crustacea;
Class BranchiopodaClass Branchiopoda
Artemia (fairy shrimp) – Artemia (fairy shrimp) – Subphylum Crustacea; Subphylum Crustacea;
Class BranchiopodaClass Branchiopoda
No abdominal appendages
Cypris (ostracod) – Cypris (ostracod) – Subphylum Crustacea; Subphylum Crustacea;
Class MaxillopodaClass Maxillopoda
Cyclops (copepod) – Cyclops (copepod) – Subphylum Crustacea; Subphylum Crustacea;
Class MaxillopodaClass Maxillopoda
somites
Subphylum UniramiaSubphylum Uniramia
uniramous appendagesuniramous appendages
1 pair of mandibles1 pair of mandibles
2 pair of antennae2 pair of antennae
MILLIPEDE – MILLIPEDE – Subphylum Uniramia; Subphylum Uniramia;
Class DiplopodaClass Diplopoda
Scolopendra (centipede) – Scolopendra (centipede) – Subphylum Uniramia; Subphylum Uniramia;
Class ChilopodaClass Chilopoda
head
trunk
telson
Subphylum Uniramia; Subphylum Uniramia; Class PauropodaClass Pauropoda
12 trunk segments12 trunk segments
9 pairs of legs9 pairs of legs
Melicoides (grasshopper) – Melicoides (grasshopper) – Subphylum Uniramia; Subphylum Uniramia;
Class InsectaClass Insectaprothorax mesothorax
telothoraxtelothorax
Pediculus humanis capitis Pediculus humanis capitis (head louse) – (head louse) –
Subphylum Uniramia; Subphylum Uniramia; Class InsectaClass Insecta
Ctenocephalides felis Ctenocephalides felis (cat flea) – (cat flea) –
Subphylum Uniramia; Subphylum Uniramia; Class InsectaClass Insecta
headhead
thoraxand legsthoraxand legs
abdomen
What are you lookin’ at?
Quit buggin’ me!
End...End...
