Scytodes thoracica

Scytodes thoracica

''Scytodes thoracica'' is a spitting spider because it spits a poisonous sticky silken substance over its prey. Its size ranges between :Template:Convert/–. The carapace is unusual in sloping upwards towards its rear end, whereas the abdomen slopes downwards.

It has six eyes instead of the eight spiders usually have. It is found in the Holarctic, Australia, and on some oceanic islands in the Pacific.

This particular spitting spider features the presence of silk glands in its cephalothoprax. Besides the silk glands in its abdomen, the spider also has silk glands connected with its poison glands. In this way the spiders has the ability to make poisonous silk. Other ''Arachnidae'' may also have silk glands in their cephalothorax like the pseudo-scorpions.
Tiger glue The 'spitting spider' catches prey in a very particular way. It hunts during night, when all insects are at rest. The spider sneaks very carefully towards its prey. When it is up close it stops and carefully measures the distance to its prey with one front leg without disturbing the insect. Then it spits two poisonous silk threads in a zigzag manner over the victim. The prey is immediately immobilized. When the prey is larger the spider spits several times. It is assumed the spider uses special long hearing hairs located at its legs to locate its prey. It is usefull because it also catches mosquito's.

This is the only member of the Scythodes family living in The Netherlands. They only live inside houses. Geotagged,Getijgerde lijmspuiter,Macro,Scytodes thoracica,The Netherlands,spider

Habitat

''Scytodes thoracica'' is nocturnal. It prefers warm temperatures and is not rare inside houses.

In Southern Europe, it can be found under stones outside houses. In Northern Europe it can only be found in houses.
Spitting Spider  Geotagged,Romania,Scytodes thoracica,spitting spider

Reproduction

The mother does not make a nest, but carries her eggs under her belly in a net of silk.

Food

In contrast to the Pseudoscorpions that use the silk from the cephalothorax glands to make nests, the 'spitting spider' uses it to catch prey in a very particular way. It is a very slow hunter as its long and tender legs may suggest. During night, when all insects are at rest, Scytodes starts its hunt. The spider sneaks very carefully towards its prey and, from about 10 mm , stops and carefully measures the distance to its prey with one front leg without disturbing it. Then it squeezes the back of its body together and spits two poisonous silk threads, in 1/600 sec, in a zigzag manner over the victim. The prey is immediately immobilized. When the prey is larger the spider spits several times. It is assumed the spider uses special long hearing hairs located at its legs to locate its prey.

References:

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Taxonomy
KingdomAnimalia
DivisionArthropoda
ClassArachnida
OrderAraneae
FamilyScytodidae
GenusScytodes
SpeciesS. thoracica
Photographed in
Netherlands
Romania