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Leiobunum
''Leiobunum'' is a genus of the harvestman family Sclerosomatidae with more than a hundred described species. Contrary to popular belief, they are not a spider, although they share resemblance. This is where the title of "harvestman spider" comes in play. Leiobunum are more commonly known as "Daddy Long Leg Spider".They are actually part of the arachnid class, but occupy their own order called Harvestmen Opiliones. ==Body Form==
The teguments are soft or subcoriaceous. The striae of the cephalothorax and of the three last abdominal segments are very distinct; those of the anterior segments are scarcely or not at all distinct. The anterior and lateral borders of the cephalothorax are smooth. The eye eminence is relatively small; smooth or, rarely, provided with small, slightly distinct, tubercles; widely separated from the cephalic border. Lateral pores small, oval, and marginal. Anal piece large, transverse-oval or semicircular, much wider than long, and much wider than the reflected borders of the eighth segment. Mandibles short, similar in the two sexes ; first joint furnished at the base below with an acute tooth. Palpi simple ; femur, patella, and tibia without any process and without projecting angles ; maxillary lobe provided at the base with two strong, conical teeth. Maxillary lobe of the second pair of feet very long, nearly straight from the base, not attenuated, directed mesad nearly horizontally, and united on the ventro-meson to the lobe from the opposite side without forming a sensible angle; the two together lightly arched on the cephalic border, and forming an even curve. Sternal piece large, slightly contracted between the fourth pair of coxae, gradually enlarging and obtusely truncate cephalad. The feet are very long and slender; tibia of the second pair with a few false articulations. Palpal claw denticulate.〔Weed, Clarence M., 1889: ''A descriptive catalogue of the Phalangiinae of Illinois.'' In: Bulletin of the Illinois State Laboratory of Natural History, Urbana, Ill., 3(5):81-82:〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Leiobunum」の詳細全文を読む
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