Diplocentria rectangulata

Definitive identification requires examination of genitalia, particularly the male pedipalps and female epigyne, as is standard for Linyphiidae. The rectangular abdominal shape or pattern implied by the species name may aid field recognition, but this should be verified against type specimens or authoritative keys. Distinguished from other Diplocentria species by subtle differences in genitalic morphology and possibly abdominal proportions.

Small-bodied spider with the compact build characteristic of Linyphiidae. The species epithet 'rectangulata' likely refers to a rectangular feature of body shape or abdominal patterning, though specific morphological details require specimen examination. Typical linyphiid traits include: body length under 5mm, long thin legs relative to body size, and often distinct abdominal markings. Sexual dimorphism in size and coloration has been observed in congeners but specific details for this species are not documented.

Found in boreal and temperate regions. Specific microhabitat preferences are not well documented, but congeners and related linyphiids occupy moist ground layers, leaf litter, and low vegetation in forested and open habitats.

Holarctic distribution spanning North America (including Alberta, Canada) and Eurasia (Europe through Russia to the Far East). Records indicate presence across northern latitudes with continental-scale range.

Activity period not specifically documented; likely active during warmer months consistent with temperate and boreal spider phenology.

Constructs sheet webs for prey capture, typical of the family. Web architecture consists of horizontal sheets with knockdown threads above, though specific web dimensions and structure for this species have not been described.

Functions as a small generalist predator in ground and understory food webs. Contributes to regulation of small insect and other arthropod populations in boreal and temperate ecosystems.

No documented economic or medical significance. Too small to be noticed by most observers; occasionally encountered by arachnologists conducting systematic surveys.

• Other Diplocentria speciesGenus-level similarity in size and web-building behavior; require genitalic examination for definitive separation
• Other LinyphiidaeMany dwarf spiders share sheet-web ecology and small size; identification to genus and species requires specialized taxonomic expertise

• spider
• sheet web
• boreal
• Holarctic
• dwarf spider
• Linyphiidae

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