Glossary


abdomen
the second segment of a spider's body

anterior
closer to the front of the body or to the cephalothorax

anterior median eyes
middle pair of eyes in the front of the carapace

appendages
the legs and pedipalps of a spider

arachnologist
scientist who studies arachnids

Araneae
the Order to which spiders belong

arthropod
animals with external skeletons and jointed legs; includes insects, spiders, and crabs

biodiversity
number and kinds of living organisms

book lungs
one type of respiratory organ found in spiders

boss
a bump found at the base of the chelicerae of some spiders

calamistrum
bristles on metatarsus IV of some spiders used to comb silk from the cribellum

carapace
first segment of spider's body

cephalothorax
first segment of spider's body

chelicerae
jaws of a spider

cobweb spider
spider in the family Theridiidae

combfooted spider
spider in the family Theridiidae

coxa
leg segment closest to the body

crab spider
spider in the family Thomisidae

cribellum
a flat spinning plate covered with thousands of silk spigots anterior to the spinnerets in cribellate spiders

cribellate
a group of spiders possessing a cribellum and calamistrum

daddy-long-legs spiders
spiders in the family Pholcidae

dorsal
on top

dragline
a safety line of silk

ecosystem
a community of species that lives in a particular habitat

Ecribellate
group of spiders lacking a cribellum and calamistrum

endites
platelike structures on either side of the opening to the mouth used to macerate prey and filter out large particles from the mouth

epigynum
scleritized plates surrounding the genital opening on the ventral surface of the female's abdomen

fang
claw-like structures at the ends of the chelicerae with openings leading to poison glands

femur
the third segment of the leg or pedipalp

fishing spider
spider in the family Pisauridae

funnel weavers
spiders in the family Agelenidae

genitalia
pedipalps and epigyna, or external sexual organs in spiders

hairy mygalomorph
spider in the family Theraphosidae

intromittent organs
male organs used to inject sperm into females; pedipalps are intromittent organs

jumping spider
spider in the family Salticidae

labium
a platelike structure located between the two endites

lampshade spider
spider in the family Hypochilidae

lateral
side

long jawed spider
spider in the family Tetragnathidae

lynx spider
spider in the family Oxyopidae

median
middle

metatarsus
sixth leg segment away from the body

morphology
the study of body form and structure

nursery web spider
spider in the family Pisauridae

orb-weaving spider
spider in the family Araneidae

patella
the fourth segment of the leg or pedipalp counting from the tip of the appendage

pedicel
the stalk linking the cephalothorax to the abdomen

pedipalps
the leg-like first pair of appendages on a spider

pirate spider
spider in the family Mimetidae

posterior
closer to the spinnerets

posterior median eyes
middle pair of eyes closer to the back of the carapace

sac spiders
spiders in the family Clubionidae

scleritized
hardened and thickened

scopula
a fringe of fine hairs on the ventral surface of the tarsus and metatarsus

sheet-web weaver
spider in the family Linyphiidae

sperm web
a platform of silk upon which the male deposits a droplet of sperm

spiderlings
baby spiders

spinnerets
organs through which silk emerges from a spider's body

spiracle
opening to the respiratory organs (the book lungs or the tracheae)

sternum
hardened plate forming the ventral surface of the cephalothorax

stridulating area
area with parallel chitinous ridges that are rubbed by another structure to produce sounds

tarantula
mygalomorph spider

tarsus
last segment of the leg or pedipalp

taxonomy
the science of classification; in biology the taxonomic categories from greatest to smallest are Kingdom, Phylum, Class, Order, Family, Genus, Species

tibia
the third segment of the leg counting from the end

tracheal spiracle
opening to the tube-like respiratory organs called tracheae that extend inside the spider's body

trapdoor spider
spider in the family Ctenizidae

trochanter
the second segment of the leg or pedipalp counting from the body

truncate
squared off

ventral
''belly'' side wolf spider in the family Lycosidae

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