[1] It is considered a common household spider and builds its nest in attics, basements, and eaves of houses.
[3] Holocnemus pluchei belongs to the family Pholcidae, which contains over 1800 species, including multiple types of "daddy long-legs".
The marbled cellar spider is native to the Mediterranean area of Europe and Northern Africa.
[4] This species primarily inhabits warm terrain, spaces below rocks, caves, and basement areas.
[4] Holocnemus pluchei prey on various species of insects, including fruit flies, houseflies, and damselflies.
They completely surround the female and the eggs in a spherical structure and are attached to branches or the side of buildings.
[7] Holocnemus pluchei move to new webs frequently throughout their lifespan, making it difficult to follow an individual over the course of its life.
[8] In addition, although it is difficult to follow individuals in the field due to web migration, females occasionally produce multiple clutches over their lifetime, sometimes as soon as two months after the successful hatching of the first brood.
[3] Females can also regulate mate choice through their sternum projections, which serve as filters by limiting male success during sperm transfer.
In contrast, males of H. pluchei often enter females’ webs for the purpose of aggressively stealing food.
Since the first male that mates with the female H. pluchei is unlikely to be the one to fertilize her eggs, there may not be as great of an advantage to engaging in chivalrous behavior.
In response to invasions from other species, H. pluchei will “bounce,” or move their legs rapidly up and down while remaining grounded on the web in an attempt to dislodge the intruder.
[12] Holocnemus pluchei are considered household spiders and build webs in the eaves, basements, and attics of houses.