Resources:
Theridiidae  Sundevall, 1833 / Theridion  Walckenaer, 1805   63 species

Theridion parvulum Blackwall, 1870

Description
Male

Palp short, yellowish, bulb yellowish brown, encircled by a black "filiform spine". Prosoma light brown, posteriorly with median black marking. Prosoma 1 mm long. Legs yellowish. Opisthosoma oval, whitish, dorsally with a large, dentate, black band, which is mottled with white on anterior part, ventrally with a black spot in front of spinnerets, and a black transverse band behind the epigastric fold.

Body length male: 2.1 mm
Female

Unknown.

Additional information

Species inquirenda per Pantini & Isaia (2019).

Distribution
  Presence
  No data
Distribution comment: Omitted from the Italian checklist (Pantini & Isaia (2019)
Global distribution (WSC 2026): Italy (Sicily)
Figures
Distribution List
References

Blackwall J A (1870a) Notes on a collection of spiders made in Sicily in the spring of 1868, by E. Perceval Wright, M. D., with a list of the species, and descriptions of some new species and of a new genus. Annals and Magazine of Natural History (4) 5: 392-405 pdf

Isaia M, Tolve M, Pantini P (2025) Araneae.it: 2.0: the new updated version of the digital catalog of the Italian spiders and other arachnids (Arachnida: Araneae, Opiliones, Scorpiones, Pseudoscorpiones, Palpigradi, Solifugae). Fragmenta Entomologica 57: 197-204 pdf

WSC (2026) World Spider Catalog. Version 27. Natural History Museum Bern, online at http://wsc.nmbe.ch (20.5.2026) doi: 10.24436/2 pdf

Updates
28-11-2019 Distribution update Detail
11-11-2015 Image insert