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HARVESTER

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Originally appearing in Volume V13, Page 41 of the 1911 Encyclopedia Britannica.
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HARVESTER , See also:

HARVEST-SPIDER, Or HARVEST-See also:MAN, names given to Arachnids of the See also:order Opiliones, referable to various See also:species of the See also:family Phalangiidae. Harvest-See also:spiders or harvest-men, so-called on See also:account of their abundance in the See also:late summer and See also:early autumn, may be at once distinguished from all true spiders by the extreme length and thinness of their legs, and by the small See also:size and spherical or See also:oval shape of the See also:body, which is not divided by a See also:waist or constriction into an anterior and a posterior region. They may be met with in houses, back yards, See also:fields, See also:woods and heaths; either climbing on walls, See also:running over the grass, or lurking under stones and fallen See also:tree trunks. They are predaceous, feeding upon small See also:insects, mites and spiders. The See also:males are smaller than the See also:females, and often differ from them in certain well-marked secondary sexual characters, such as the mandibular protuberance from which one of the See also:common See also:English spiders, Phalangium cornutum, takes its scientific name. The male is also furnished with a See also:long and protrusible penis, and the See also:female with an equally long and protrusible ovipositor. The sexes pair in the autumn, and the female, by means of her ovipositor, See also:lays her eggs in some cleft or hole in the See also:soil and leaves them to their See also:fate. After breeding, the parents See also:die with the autumn See also:cold; but the eggs retain their vitality through the See also:winter and See also:hatch with the warmth of See also:spring and early summer, the See also:young gradually attaining maturity as the latter seasonprogresses. Hence the prevalence of adult individuals in the late summer and autumn, and at no other See also:time of the See also:year. They are provided with a pair of glands, situated one on each See also:side of the See also:carapace, which secrete an evil-smelling fluid believed to be protective in nature. Harvest-men are very widely distributed and are especially abundant in temperate countries of the a, Ocular tubercle. d, Sheath of penis protruded. b, Mandible e, Penis.

c, See also:

Labrum (upper See also:lip). f, The glans. See also:northern hemisphere. They are also, however, common in See also:India, where they are well known for their See also:habit of adhering together in See also:great masses, comparable to a swarm of bees, and of swaying gently backwards and forwards. The long legs of harvest-men serve them not only as See also:organs of rapid locomotion, but also as props to raise the body well off the ground, thus enabling the animals to stalk unmolested from the midst of an See also:army of raiding ants. (R. I.

End of Article: HARVESTER

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