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Daddy-long-legs Phalangium opilio

   

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Daddy-long-legs
© Rob & Ann Simpson

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Family: Phalangiidae, Daddy-long-legs view all from this family

Description 1/8-1/4" (4-6 mm). Long thin legs. Body reddish brown. Legs dark with prominent paler coxae. Eyes on black turret; 1 eye to right, 1 to left.

Food Small insects and decaying organic matter.

Life Cycle Female thrusts ovipositor into soil to deposit eggs. When warm weather arrives, young creep out and grow slowly. Normally they mature in summer, then mate without courtship. 1 generation a year.

Habitat Fields on tree trunks and open ground.

Range Throughout North America.

Discussion On cool afternoons adults often climb trees or sides of buildings, seemingly to benefit from residual heat of the sun. A warm knothole may attract dozens of daddy-long-legs, which stand close together with legs interlaced all night.

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