Gem-shaped Orbweaver

Araneus gemma
Araneus gemma
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Araneus gemma, commonly known as the cat-faced spider (a name shared with Araneus gemmoides), is a common outdoor orb-weaver spider found in the western United States and Canada. Like most Araneus species, A. gemma is harmless to humans. It contains a venomous toxin of low molecular weight called argiotoxin, that antagonizes the actions of the neurotransmitter glutamate. Dopamine was also identified in the venom of A. gemma in a concentration of 4.3 nM. The web silk of the A. gemma ranges from 1 to 4 μm in diameter.

Gem-shaped Orbweaver

Araneus gemma



Scientific classification

kingdom: Animalia
phylum: Arthropoda
class: Arachnida
order: Araneae
family: Araneidae
genus: Araneus

People often ask

Do cat-faced orbweaver sleep?