Phidippus adumbratus
species of arachnid
Phidippus adumbratus is a species of jumping spider in the family Salticidae. It is found in the United States and Mexico. The type species was collected In Los Angeles and named in 1934. Adumbratus is one of the insignarius group of Phidippus spiders.
Within the United States, Phidippus adumbratus is within the California Floristic Province in native chaparral and in oak-sycamore-chaparral woodland between 500–3,700 ft (150–1,130 m). A spider survey published in 1999 found P. adumbratus present in coastal sage scrub in the vicinity of San Diego. A spider survey report published in 2022 found individuals in Baja California's Central Desert ecoregion in Sierra Blanca, Ensenada Municipality, Mesa Escondido and San Antonio de Las Minas on the Baja California peninsula.
The etymology of the Latin name is from the adjective adumbratus, meaning "secret, in the dark (perhaps alluding to the fact that the abdomen of the holotype is missing, and the describer was 'in the dark' as to its appearance)." According to BugGuide, adumbratus is often used by zoologists to indicate a "hazy dark pattern".
This brief starts where responsible research should: with the source description of “Phidippus adumbratus” as species of arachnid. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the science & nature register because the source frames it as species of arachnid. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Sep 15, 2026. The linked authority identifier is Q2132131. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1934, 1999 and 2022.
Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. 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.
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This entry incorporates text from “Phidippus adumbratus” 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.