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Chapter 13 Crustacea & Hexapoda - Coggle Diagram
Chapter 13
Crustacea & Hexapoda
Subphylum Crustacea
lobsters shrimp etc
2 tagmata: cephalothorax & abdomen. 2 pairs of antennae. 2maxillae. mandibles.
Class Ostracoda: seed shrimps.
chitinous shell.
Class Branchiopoda: fairy shrimp.
freshwater. flat legs aid in respiration.
Class Copepoda:copepods.
planktonic primary consumers. 4 pairs of binary appendages.
Class Thecostraca:barnacles.
legs are called cirri.
Class Malacostraca:lobsters and crabs
most diverse.
order isopoda: pill bugs/ rock lice
order amphipoda
compressed shrimps
order euphausiacea: krill.
important food for whales.
order decapoda: lobsters, shrimps, crabs
10 legs. have chelipeds (modified 1st pair of legs)
Subphylum Hexapoda
most diverse group.
General Body Plan:
3 tagmata: head, thorax, abdomen.10 appendages on head. 6 on thorax.
2 Major Classes: Entognatha & Insecta
Class Insecta: THE most diverse
4 different mouth functions
chewing, piercing/sucking, siphoning, & sponging.
their compound eyes consist of 30,000 ommatidia for high resolution, mosaic imagery.
open CS. spiracles on thorax & abdomen, for water retention. retain oxygen by diffusion. DIOECIOUS.
Insect development:
ametabolous
: egg>immature>adult. (silverfish)
hemimetabolous:
egg>nymph>adult. (beetles)
holometabolous
: egg>larva>pupa>adult. (butterfuly)
Synchronous (dragonflies) vs Asynchronous (butterflies)
Insect Orders
Order Archaeognatha:birstletails.
Order Thysanura: silverfish.
Order Ephemeroptera: mayflies.
nypmh is the immature form
Order Odonata: dragonflies. nymphs on water, adults on land.
Neoptera Representative Orders
Order Orthoptera: grasshoppers & crickets. hemimetabolous. CHEWING
Order Hemiptera: truebugs, cicadas, etc. hemimetabolous. PIERCING/SUCKING.
Order Coleoptera:beetles. holometabolous. hard forewings: elytra. largest animal order 400,000.
Order Hymenoptera: bees, wasps, etc. holometabolous. CHEWING. some wasps are parasitoids (lay eggs in other animals)
Order Lepidoptera: moths & butterflies. holometabolous. larvae chew and adults suck with proboscis.
Order Diptera: holometabolous. Only forewings are functional, hindwings are used for balance. mouthparts for sponging, piercing, sucking, and lapping.
Class Entognatha
(live in soil)
Order Collembola, springtails.
Order Protura. no eyes OR antenna. they just use front legs for feeling,
Order Diplura. long. 2 long antenna too.