Eresus kollari
species of Arachnida
Eresus kollari, the ladybird spider, is a spider species in the family Eresidae. It was first described by Walckenaer in 1802, though it was misidentified. It was later correctly described by Rossi in 1846. It is one of the three species into which Eresus cinnaberinus or Eresus niger has been divided. It is thought to be endangered.
Description
The ladybird spider's body, as with most velvet spiders, somewhat resembles those of species in the jumping spider family. The male has a highly contrasting black and orange-red coloration, while the female is completely black. The opisthosoma looks velvety, as the species's common name would imply.
Colonies
In colonies, they burrow up to 10 cm in depth which is usually covered in a funnel web. Females may carry a lens-shaped egg sack containing up to 100 eggs, which is taken to a sunny place.
This brief starts where responsible research should: with the source description of “Eresus kollari” as species of Arachnida. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the science & nature register because the source frames it as species of Arachnida. Its deeper value depends on whether names, dates, institutions and citations support that framing.
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 Apr 26, 2026. The linked authority identifier is Q794900. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1802 and 1846.
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This entry incorporates text from “Eresus kollari” 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.