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Cheiracanthium falcatum

species of arachnid

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 23, 2025
Entity authorityQ2752196 ↗
Source-derived summary

Cheiracanthium falcatum, commonly known in Mandarin Chinese as "長腿紅螯蛛" or Sickle-shaped red chelate spider, is a species of yellow sac spider endemic to Taiwan.

Description

C. falcatum are yellowish brown in color, with a long, slender body and brown maxilla and chelicerae. They lack a thoracic furrow. They are distinguished from similar species by a posterior epigyneal depression, copulatory duct coils in three spirals leading downward to the spermatheca in the female vulva, and a finger-like tibial apophysis and long sickle-shaped cymbial spur in the pedipalps of males. They most resemble C. ningmingense but may be distinguished by their thicker tibial apophysis in the male palpus.

Distribution

C. falcatum are endemic to Taiwan and widely distributed at elevations between 200m and 800m.

Editorial summary

Begin with the source’s own compact description: “Cheiracanthium falcatum” is species of arachnid. The dossier treats that line as a proposition to test through Cheiracanthium, falcatum and species, not as a finished interpretation.

Editorial reviewA sound reference starting point where classification, measurement and the date of the underlying evidence remain visible. The current 122-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. For this dossier, Cheiracanthium, falcatum and species is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “species of arachnid” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Aug 23, 2025. The linked authority identifier is Q2752196. None of the 0 selected statements returned an explicit reference.

Critical limits

A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Three-step research path

  1. Establish the record: confirm the title “Cheiracanthium falcatum”, its source revision and the description used here.
  2. Expand the search: follow Cheiracanthium falcatum primary sources, Cheiracanthium falcatum archive and Cheiracanthium research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

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  2. Is the terminology current, historical or disputed?
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Source & attribution

This entry incorporates text from “Cheiracanthium falcatum” 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.