Arthropoda Flashcards
Protostome
spiral cleavage
-blastopore becomes mouth, anus second
deuterostome
radial cleavage
-blastopore becomes anus mouth second
arthropod features
non-living cuticle, paired jointed apendages, sensory structures, metameric body, open circulatory system, growth by molting
Subphylum chilicerata
classes (2)
- merostomata (horsechoe crab)
- arachnida (spiders, ticks etc)
arthropoda subphylums (5)
trilobita chilicerata crustacea myrapoda hexapoda
crustacea class
cambarus (crayfish)
myrapoda classes (2)
chilopoda (centepede)
diplopoda (milipede)
hexapoda class
insecta
class insecta orders (big 4+ grasshopper)
coleoptera (beetles) diptera (flies) hymenoptera (bees) lepidoptera (moths) orthoptera (grasshoppers)
insecta features
2 pairs of wings, 3 body tagma, 6 legs, thorax, compound and simple eyes, mandibulate mouthparts, sclerites, one pair antennae
hexapods 3 body tagma
head, thorax, abdomen
thorax
prothorax, mesothorax, metathorax
insects eyes
compound eyes and simple eyes (ocelli)
insect mandibulate mouthparts (derived from cuticle)
labrum, labium, mandibles, maxillae
sclerites
individual cuticular plates
insect breathing
via tracheal tubes from cuticle
insects cuticle structure
secreted by epidermal cells
basal- epidermis growing out is the endo, exo and epicuticle,
top epicuticle layer
prevents water loss
middle cuticle layers that make the procuticle
exocuticle and endocuticle
exocuticle
dark, goes through scleritinization/tanning which makes it rigid, hard, dark, made of chitin
endocuticle
soft, pale, flexible, membraneous
incomplete metamorphosis
egg, 1-5 instar nymph, adult
complete metamorphosis
egg, larva, pupa, adult
crustacea tagmata
cephalothorax and abdomen
telson
cambarus single appendage on tail
uropod
cambarus swimmer on tail
myrapod tagmata
2, head and trunk
cambarus features
1 pair antennules, 1 pair antennae, 1 pair mandibles, 2 maxillae, 3 maxillipeds, claws(modified walking legs), 5 pairs of swimmerets, telson, uropod
