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Copyright © 2001-2025 Ondrej Rehak
Photogallery - 26 species of

tarantulas with egg sacks


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Tarantula reproduction

As with other spiders, the mechanics of intercourse are quite different from those of mammals. Once a male spider reaches maturity and becomes motivated to mate, it will weave a web mat on a flat surface. The spider will then rub its abdomen on the surface of this mat and in so doing release a quantity of semen. It may then insert its pedipalps (short leg-like appendages between the chelicerae and front legs) into the pool of semen. The pedipalps absorb the semen and keep it viable until a mate can be found. When a male spider detects the presence of a female, the two exchange signals to establish that they are of the same species. These signals may also lull the female into a receptive state; if so, the male approaches the female and inserts his pedipalps into an opening in the lower surface of her abdomen. After the semen has been transferred to the receptive female's body, the male will generally quickly leave the scene before the female recovers her appetite.
Females deposit 50 to 2000 eggs, depending on the species, in a silken egg sac and guard it for 6 to 7 weeks. The young spiderlings remain in the nest for some time after hatching and then disperse by crawling in all directions. Read more..


Egg sack - Acanthoscurria natalensis
Egg sack - Acanthoscurria natalensis
Egg sack - Acanthoscurria suina
Egg sack - Acanthoscurria suina
Egg sack - Brachypelma boehmei
Egg sack - Brachypelma boehmei
Egg sack - Brachypelma emilia
Egg sack - Brachypelma emilia
Egg sack - Ceratogyrus sanderi
Egg sack - Ceratogyrus sanderiNova fotka
Egg sack - Chromatopelma cyaneopubescens
Egg sack - Chromatopelma cyaneopubescens
Egg sack - Cyriocosmus sp. Bolivia
Egg sack - Cyriocosmus sp. Bolivia
Egg sack - Ephebopus cyanognatus
Egg sack - Ephebopus cyanognatus
Egg sack - Eupalaestrus weijenberghi
Egg sack - Eupalaestrus weijenberghi
Egg sack - Grammostola alticeps ( mollicoma? )
Egg sack - Grammostola alticeps ( mollicoma? )
Egg sack - Grammostola pulchra
Egg sack - Grammostola pulchra
Egg sack - Haplopelma lividum
Egg sack - Haplopelma lividum
Egg sack - Haplopelma longipes
Egg sack - Haplopelma longipes
Egg sack - Nhandu coloratovillosus
Egg sack - Nhandu coloratovillosus
Egg sack - Phlogiellus spec
Egg sack - Phlogiellus spec
Egg sack - Phorm. cancerides cancerides
Egg sack - Phorm. cancerides cancerides
Egg sack - Poecilotheria formosa
Egg sack - Poecilotheria formosaNova fotka
Egg sack - Poecilotheria pederseni
Egg sack - Poecilotheria pederseni
Egg sack - Poecilotheria regalis
Egg sack - Poecilotheria regalisNova fotka
Egg sack - Poecilotheria subfusca
Egg sack - Poecilotheria subfuscaNova fotka
Egg sack - Psalmopoeus irminia
Egg sack - Psalmopoeus irminia
Egg sack - Psalmopoeus reduncus
Egg sack - Psalmopoeus reduncus
Egg sacks - Euathlus spec Chile
Egg sacks - Euathlus spec Chile "Oranzovy"Nova fotka
Egg sacks - Euathlus vulpinus
Egg sacks - Euathlus vulpinusNew photo
Egg sacks - Grammostola rosea
Egg sacks - Grammostola rosea
Egg sacks - January 2005
Egg sacks - January 2005

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