Bug FAQNinja-star Ceiling Spider
Zosis geniculata · Order: Araneae · Family: Uloboridae
Also called: Humped Spider, hackled orb weavers
Zosis geniculata has a pantropical, worldwide distribution. In Australia it is commonly found inside buildings close to human habitation.
Source: Wikipedia
Where it lives
In Australia it is commonly found inside buildings close to human habitation.
Source: Wikipedia
Where it comes from
Zosis geniculata has a pantropical, worldwide distribution.
Source: Wikipedia
Where it is found in the US
Recorded in 3 of 51 states and DC. Most records: Florida, Hawaii, Mississippi.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: introduced in Canada. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
Where is the Ninja-star Ceiling Spider likely to be found?
It is a pantropical species that occurs worldwide, and in Australia it is often seen inside buildings near people.
Source: Wikipedia
Same family (Uloboridae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Zosis_geniculata
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-29 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-29.