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Spider beetles are the approximately 500 species of beetles in the subfamily Ptininae of the family Anobiidae. They are sometimes considered a family in their own right, which is then called Ptinidae. Spider beetles have round bodies with long, slender legs, and lack wings. They are generally 1–5 mm long. Both the larvae and the adults are scavengers. They reproduce at the rate of two to three generations per year. ==Genera== About 11 genera are recognised : *''Gibbium'' Scopoli, 1777 *''Gnostus'' Westwood, 1855 *''Mezium'' Curtis, 1828 *''Niptinus'' Fall, 1905 *''Niptus'' Boieldieu, 1856 *''Pitnus'' Gorham, 1883 *''Pseudeurostus'' Heyden, 1906 *''Ptinus'' Linnaeus, 1766 *''Sphaericus'' Wollaston, 1854 *''Tipnus'' Thomson, 1863 *''Trigonogenius'' Solier, 1849 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「spider beetle」の詳細全文を読む スポンサード リンク
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