Patu digua as an example
Male Patu digua have been reported at about 0.37 millimetres in body length. The World Spider Catalog accepts the species and lists Colombia as its distribution. Body length excludes the legs. Such an adult is not merely the juvenile stage of a much larger spider: it belongs to a remarkably small-bodied species.
Not every sex is known
Guinness explicitly discusses several contenders. For some species only females have been measured, and males may be smaller. Historical measurements of separate body parts also need careful interpretation. We present Patu digua as a documented example of extreme small size rather than claiming an unambiguously settled winner.
Small does not mean insignificant
Small spiders lead us toward hidden habitats and the limits of ordinary observation. A macro image can make a minute animal appear enormous. Without scale and identity, it establishes no size record. Scientific collections and descriptions help connect measurements to actual specimens and verifiable species names.
Sources & image credits
Sources checked: 1 November 2026. Figures and records carry the qualifications stated in each article.