Bug FAQArizona black hole spider
Kukulcania arizonica · Order: Araneae · Family: Filistatidae
Females are about 13 mm long, not counting legs, and can live for several years. Males have longer legs and a slimmer body compared with females. They make silken tubes in wall crevices, with radiating threads, and are found in Arizona and neighboring states.
Source: Wikipedia
How to recognize it
The spider is black with a velvety feel.
Source: Wikipedia
Size
Females reach about 13 mm in body length, not counting legs. Males are thinner and have noticeably longer legs than females.
Source: Wikipedia
Is it a pest in the house?
The spider often builds its tube on building walls. It is found in Arizona and neighboring states.
Source: Wikipedia
Where it lives
It builds a silken tube in a wall crevice, with threads radiating from the entrance.
Source: Wikipedia
Life cycle
Females can live for several years. Males are thinner and have longer legs.
Source: Wikipedia
Where it comes from
It occurs in Arizona and also in New Mexico, Nevada and California.
Source: Wikipedia
Lookalikes
Males can be told apart by their longer legs and slimmer bodies.
Source: Wikipedia
Where it is found in the US
Recorded in 6 of 51 states and DC. Most records: Arizona, Texas, New Mexico, California, Nevada, Utah.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
Where does the Arizona black hole spider live?
It builds silken tubes in wall crevices and is found in Arizona, New Mexico, Nevada and California.
Source: Wikipedia
How can I tell a male from a female?
Males have noticeably longer legs and a thinner body than females.
Source: Wikipedia
Same family (Filistatidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Kukulcania_arizonica
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-25 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-25.