Ceratinopsidis

As a monotypic genus with only Ceratinopsidis formosa, identification relies on distinguishing this species from other Linyphiidae genera. Members of Linyphiidae generally exhibit small body size (often under 5 mm), elongated abdomens, and possess a distinctive eye arrangement with the anterior median eyes typically smaller than the posterior median eyes. Specific diagnostic characters for Ceratinopsidis require examination of genital morphology.

The single species Ceratinopsidis formosa has been recorded in North America. The genus as a whole has limited documented occurrence, reflecting its rarity or restricted range.

As a member of Linyphiidae, individuals construct sheet webs—flat, horizontal silk platforms often positioned above the ground or vegetation, with a retreat area and knockdown threads above to intercept flying prey.

As a sheet-web weaving spider, it functions as a generalist predator of small flying and jumping arthropods, contributing to regulation of insect populations in its habitat.

• CeratinopsisSimilar genus name and shared family Linyphiidae; distinguished by genitalic morphology and different species composition.
• Other Linyphiidae generaMany linyphiid genera share small size and sheet-web building behavior; precise identification requires microscopic examination of pedipalps and epigynum.

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life