Zoo practical 2

Hexapod

6 legs

1 pair antenae

Tagmata=3(head, thorax, and abdomen)

Order: Coleoptera

Beetles

Mandible and elytra

Order: Diptera

Fly

2 wings and big eyes

Order: Mantadea

Mantises

2 renteniol appendages

4 walking legs

Order: Lepidoptera

Butterfly and moths

Proboscis and 2 pairs A/B wings

Order: Odonata

Dragon flies

2 pairs of A/B wings

Long abdomen

Order: Orthoptera

Grasshopper and crickets

Large anterior facing walking legs, labrum, mandibles, two equalize walking legs

Order: Hymenoptera

Bees, wasps, ants

Haemuli( hooked wings) and “wasp waist”

Order: Hemiptera

True bugs

Sucking mouth, parts and triangle head scutellium

Crustacea

Two pair of antenae

Tagmata= 2 (cephalothorax plus Long abdomen)

Highly specialized walking legs

Class: Malacostraca

Eight pairs of thoracic leg

Highly segmented

Order: decopoda

Shrimp crab and crayfish

10 legs, chelae, swimmerets and telson

Order: amphipoda

Large antenae, 13 segments ,and a marsupium

Order: isopoda

Dorsal ventrally flattened, small antenna, marsupium

Order: stomotopoda

Mantis shrimp

Raptoral appendages and rounded tail

Order: Ostricoda

Reduced head and setae

Class: Branchipoda

Large eye spot. Looks like a chick

Class: Theostraca

Barnacles

Sessile as adult and operculum

Class: Copepoda

Large antenna, eye spot and egg sac

Cheliserate

Chelate = palps

No antenae

Tagmata= 2

Order: Xiphosura

Class: merostoma

Horseshoe crab

Mouth bookgills and telson

Class: Pycdgonida

Sea spider

Modified palps porboscis (modified chelicae)

Class: arachnida

8 legs and anterior ventral mouth

Order: opillions

Class: Arachnida

Daddy long legs

Palps and cephalothorax and abdomen fused

Order: scorpiones

Class: Arachnida

Scorpion

Chelae opistoma and stinger

Order: Ixodida

Class: Arachnida

Ticks

Dorsoventrally flattered, macroscopic, hypostome (20%)

Order: Acarina

Class: Arachnida

Mites

Microscopic, oval body, fuzzy

Order: Araneae

Class: Arachnida

Spiders

Chelcerae=fangs

Medipalps and cephalothorax + abdomen

Family: Solphugidae

Order: Aranaea

Class: Arachnida

Camel spider

Cheloera instead of fangs

Myriapods

Multiple legs and segments

Tagmata =2(head+trunk)

Class: Chilopoda

Centipede

Dorsoventrally flattened, 1 pair of legs per segments, toxgnaths and clumped eyes

Class: diplopoda

Millipedes

Cylindrical, 2 pair of legs per segments, scattered eyes and no toxins

phylum: Exhinodermata

Spiney skin

Deuertostome

Lack visible eyes

Penta radial

Class: ophiuroidea

Brittle stars

Snake like bristles and no tube feet

Class: Asteroidea

Sea star

Central Ring Canal and rows of tube feet

Class: Echinoidea

Aristotle Latum and tube feet

Order: Clyposteridae

Class: Echinoidea

Sea biscuit and sand dollar

Order: Echinodia

Class: Echinoidea

Sea urchin

Class: Halothuroidea

Sea cucumber

Tentacles on mouth

Relationship with pearl fish

Trilobiamorpha

Trilobita

Biramous appendges