Daddy Long Legs/Harvestmen


Actual Size: 0.6 mm to 23 mm

Characteristics: Brown, grey or black with thin legs; has a small round body without a ‘waist’.

腿: 8

栖息地: During summer, they are commonly found on the shady sides of 建筑, underneath eaves, and crawl spaces. In fall, will gather in large groups on the sides of 建筑 in a wiggling mass.


  • Not true 蜘蛛 and unable to spin webs.
  • Will emit a strange smelling odor that will repel potential predators.
  • The legs of the harvestman fall off easily and continue to twitch to ward off predators.

Harvestmen / Daddy Longlegs in Las Vegas

Harvestmen, otherwise known as daddy longlegs, are often confused with 蜘蛛, but harvestmen are not true 蜘蛛. The name harvestmen comes from their visibility in late summer and fall at harvest time. Harvestmen do not have silk glands and cannot spin webs. This species is known for its extremely long, thin legs and compact oval bodies. Harvestmen are sometimes a nuisance around structures where they congregate by the dozens, but they are not harmful to humans, 动物, 建筑, 或作物.

Harvestmen / Daddy Longlegs Habitat

Harvestmen need humid places to live and are most often found in forests and caves, climbing on rocks and vegetation. During warm months, harvestmen are extremely common on the shady sides of 建筑, underneath eaves, in crawl spaces, and on trees, in both rural and urban environments. In the fall, harvestmen will gather in large groups or swarms on the sides of 建筑, moving simultaneously, resembling a wiggling mass, which can be disturbing for predators or homeowners.

Harvestmen Behaviors, Threats or Dangers

Harvestmen are beneficial predators in the garden because they eat aphids, 蜘蛛, and other garden pests. Harvestmen do not bite, or produce venom and pose no danger to humans. 然而, if harvestmen feel threatened or are disturbed, they will emit a strange smelling odor that repels potential predators. It is rare for harvestmen to be found in homes, and because they are nocturnal, being most active at night, they can be difficult to detect.

If you are dealing with excess harvestmen 蜘蛛 in your property, contact your local spider exterminators for help.