egg sac
Arachnid brood chamber
An egg sac is a protective casing that holds eggs, especially the silk pouch spun by spiders to enclose their eggs until hatching.
Some species carry the sac; others attach it to webs or hidden surfaces.
The term extends to similar structures in other invertebrates: The mantis egg sac overwinters on the branch.
Development before emergence
- hatchlingRecently emerged young
- larvaImmature feeding stage
- nymphNature spirit or larva
- spiderlingJuvenile arachnid
emergence · gestation · instar · molting · juvenile · maturation · hatching · embryonic
Depositing eggs externally
- fertilizationGamete fusion creating zygote
- clutchMechanism linking engine to gearbox
- broodHatchlings as a group
- ovaFemale reproductive cells
embryo · zygote · gravid · oogenesis · mating · courtship · reproductive cycle · maternal care
Web-spinning arachnid
- black widowLethal spider species
- wolf spiderGround-hunting arachnid family
- tarantulaLarge hairy spider
- praying mantisPredatory insect with grasping forelegs
cockroach · scorpion · arachnid · widow · fishing spider · crab spider · jumping spider · cellar spider
incubation
Development before emergence
spiderling · emergence · gestation · instar · molting · juvenile · maturation · hatching · embryonic · developmental stage
oviposition
Depositing eggs externally
- fertilizationGamete fusion creating zygote
- clutchMechanism linking engine to gearbox
- broodHatchlings as a group
ova · embryo · zygote · gravid · oogenesis · mating · courtship · reproductive cycle · maternal care · brooding
spider
Web-spinning arachnid
- black widowLethal spider species
- wolf spiderGround-hunting arachnid family
- tarantulaLarge hairy spider
praying mantis · cockroach · scorpion · arachnid · widow · fishing spider · crab spider · jumping spider · cellar spider
cocoon
Silk wrapping for transformation
gossamer · pouch · capsule · membrane · casing · envelope · shroud · mesh · weave · filament
guarding
Actively protecting something
- camouflageConcealment through visual blending
- concealmentAct of hiding something
- shelterProtected place or structure
defense · hiding · burrow · retreat · sanctuary · carrying · vigilance
- egg casesmermaid's purse, mermaid purse
- spidersspiders, huntsman, tarantula, spider silk, spider webs
- egg wordseggnog, egghead, eggbeater
- insect developmentlarva, pupa, chrysalis, cocoon, metamorphosis
- sacspouch, bladder, vesicle, bursa, cyst
- tarantulastarantula, spiderling, sling, molt, molting