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Zosis geniculatus (Grey House Spider)

Female

Zosis geniculatus is common and easy to recognise. As it is venomless it is a harmless method of controlling insects in your house. It creates a ragged blue grey circular web, with star shaped egg sacs. Insects trapped in the web are rolled with the hind legs and wrapped in silk. The bundle is eventually carried to the hub of the web and sucked dry.

Zosis geniculata
Photo: Robert Whyte

Spider, Web, Egg sacs

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Suspended in the web are egg-sacs which are pinkish and have characteristic horn-like projections.

Zosis geniculata
Photo: Robert Whyte

Sub-adult on foliage

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About 4mm body length possibly Piloponella?

Zosis geniculata
Photo: Robert Whyte

Web, often under or around houses

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Zosis geniculatus
Photo: Robert Whyte

Female adult from above

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Zosis geniculatus
Photo: Robert Whyte

Egg sac

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Zosis geniculatus
Photo: Robert Whyte

Female on web, photo taken with blueish light

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Z
Photo: Robert Whyte

Web from side

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Zosis geniculatus
Photo: Robert Whyte

Female adult feeding

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Zosis geniculatus
Photo: Robert Whyte

Adult female from above facing

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Zosis geniculatus
Photo: Robert Whyte

Adult female from above facing

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Zosis geniculatus
Photo: Robert Whyte

Egg sac

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Zosis geniculatus
Photo: Robert Whyte

Adult female from above in web

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Zosis geniculatus
Photo: Robert Whyte

 

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