While mature adults live for approximately 2 years, it take almost one year for a spider to fully mature from egg to adult. Cellar spiders hold their egg sacs in their mouthparts until the offspring hatches. Each sac can produce up to 60 spiderlings. Amazingly enough, the forelegs of an adult female cellar spider can grow as long as 50 millimeters!Ī single female cellar spider can produce up to 3 egg sacs in her lifetime. With their legs included, their total length can be up to 6 times longer. They are longer than most other spider species, ranging in length from 7 to 8 millimeters in length, excluding their legs. The abdomen has a cylindrical shape and is 3x larger in length than width. Cellar Spiders do not consume their old webs like other spiders, rather they continuously add on to existing webs.Ĭellar spider are tan, yellow or grey in colour. These web-building spiders feed on insects, especially ants and cannibalize other spiders. They are considered pests because they regularly infest heated building like homes and warehouses. Cellar spiders acquired their name from their favoured habitat - the cellar. This spider is most recognizable by its 8 very thin, long legs. The most well-known is the long-bodied cellar spider, also commonly known as ‘Daddy Long-legs’. There are around 20 species of cellar spiders (Pholcus phalangioides) living in Canada and the U.S.
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