Badumna
genus of arachnids
Badumna is a genus of intertidal spiders that was first described by Tamerlan Thorell in 1890. They are harmless spiders that can be found around human structures and buildings. The most well-known species is B. insignis, also known as the "black house spider" or "black window spider".
Description
They are medium to large cribellate spiders. The carapace is pale brown to a darker brown in color, with long or small brown hairs being found besides smaller white hairs. The opisthosoma has a dark striping or spotting.
Distribution
Most of the species are considered to be endemic in the Indo-Australian region, but some have been introduced elsewhere. B. longinqua is the only species introduced to North America, now found in urban areas along California's Pacific coast. B. insignis has also been found in Japan, though it is thought it was introduced.
The public source identifies “Badumna” as genus of arachnids. This brief keeps that definition visible, then builds a research path around Badumna, genus and arachnids.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Badumna”, the useful work is to connect “genus of arachnids” to the records capable of establishing context and consequence.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Oct 14, 2025. The linked authority identifier is Q2714907. The first chronological checks are 1890.
Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
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Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
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Questions for further research
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This entry incorporates text from “Badumna” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.