Senses
Anatomy of a Spider
•Most spiders have 8 eyes, others
have 6, however, they have very poor
eyesight. Therefore, they use their
sense of touch which includes
vibrations.
•There a few exceptions in jumping or
spitting spiders. It is necessary for
them to have excellent eyesight.
•Jumping spiders posses stronger
muscles on their legs in order to catch
their prey.
JUMPING SPIDERS
Life Cycle
Three Stages:
Embryonic-this stage involves the shape of the
spider the same of an adult spider.
Larval-the spider undergoes molting, in the
meantime it feeds on its yolk.
Nympho-Imaginal- this stage is broken down
into the nympho when the spider is still in a
teenager stage. It does not become an adult
until it reaches the imago.
Spider
Kingdom: Animalia
Phylum: Arthropoda
Class:
Arachnida
Order: Araneae
Digestion
•Spiders with weak chelicerae,
secrete fluids from their stomach,
which dissolve the prey’s internal
tissues.
•Stronger chelicerae masticate on
their prey, however, they only
consume liquids.
Spinnerets
•Produce silk, most spiders have
the spinnerets in the posterior
end of their body.
•They produce a silky thread in
order to catch their prey, at times
some make webs that contain
sticky droplets to trap insects to
birds or even bats.
PREDATORS
Black Widow
Brazilian
Wandering Spider
Brown Recluse
Huntsman
Wolf Spider
Funnel Spider
SPITIING SPIDERS
Goliath Tarantula
Reproduction
•Spiders create egg sacs.
•Males initiated the mating ritual, if the male does not come up to
the female’s expectations, he becomes dinner.
•Sperm is indirect, the male spins a web pad and discharges his
seminal fluid.
•He then picks it up with his pedipalps, copulation starts when he
inserts his pedipalps into the female’s genital opening.
•He then lays the web with the seminal fluid in storage for the eggs
to come in contact and then fertilize.
Acknowledgements: www.thefreedictionary.com, www.spiderzule.com, David from Comp. Lab,
By Nancy Figueroa
FLOWER SPIDERS