Entomology Flashcards
Arthropods are ___% of all known species of animals
75
It is the largest phylum of the Animal kingdom.
Phylum Arthropoda
Arthros means____ and podos means ___; (poda=___).
joints, foot; feet
are divisions or sections of the body and appendages,
Segments
structure with one end attached to body and the other end is dangling
Appendages
animals with jointed or segmented body and appendages
Arthropods
Enumerate the five classification of Arthropoda
hexapoda (insects) chelicerata crustacea Trilobitomorpha Myriapoda
They are a group of formerly numerous marine animals that disappeared in the Permian–Triassic extinction event,
TRILOBITOMORPHA
These are terrestrial, fresh water or marine animals.
Respiration is by gills or tracheae
CRUSTACEA
six classes of crustacea
Branchiopoda, Remipedia, Cephalocarida, Maxillopda, Ostracoda, Malacostraca, Thylacocephala (an extinct group).
Examples of Crustacea
barnacles, lobsters, crabs, crayfish, shrimp
Terrestrial and air-breathing arthropods. Their body is made of many similar segments.
Myriapoda
State the groups/families of myriapoda
Diplopoda,
Chilopoda,
Pauropoda,
Symphyla.
Examples of myriapoda
millipedes,
centipedes,
symphylan,
Pauropus
Their body is divisible into anterior prosoma (Cephalothorax), and posterior opisthosoma (Abdomen).
CHELICERATA
Two classes of chelicerata
Merostomata (horseshoe crabs)
Arachnida (scorpions, mites, ticks, spiders).
Arachnids have ____ body regions (head= _____ and abdomen)
2, cephalthorax
slender waist separating the cephalothorax and the abdomen.
pedicel
Difference between spiders and termites
Spiders have
cephalothorax (prosoma) and abdomen (opisthosoma) while mites have head: gnathosoma & abdomen: idisoma
are terrestrial and aquatic arthropods.
HEXAPODA=INSECTA
divided into 3 distinct regions (head, thorax, and abdomen). head with _ pairs of appendages. thorax with _ pairs of legs and
usually_ pair of wings.
5,3,2
Insecta/hexapoda has a Body cavity that is _____. Heart is ______. Abdomen with up to one pair of appendages (cerci).
haemocoel, dorsal and tubular
the dominant terrestrial animal life on Earth.
Insects
There are well over _____ different known species of insects in the world, and some experts estimate that there might be as many as ______.
1 million, 10million
how many body regions does crustacea have?
2 (cephalothorax, abdomen)
how many body regions does myriapoda have?
2 (head, body)
how many body regions does chelicerate have?
2
cephalothorax, abdomen
how many body regions does hexapoda have?
3
head, thorax, abdomen
No. of legs of crustacea
5-7 pairs
No. of legs of myriapoda
1-2 pairs per body segment
No. of legs of chelicerata
8 (=4
pairs)
No. of legs of hexapoda
6 (= 3
pairs)
No. & Kind of Eyes of crustacea
1 pair, compound
No. & Kind of Eyes of myriapoda
1 pair, compound
No. & Kind of Eyes of chelicerata
6-8 simple
No. & Kind of Eyes of insecta
2
compound, 0-3 simple
No. of antennae of crustacea
2 pairs,
rarely 1 pair