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The Sternorrhyncha suborder of the Hemiptera contains the aphids, whiteflies, and scale insects, groups which were traditionally included in the order Homoptera. "Sternorrhyncha" refers to the rearward position of the mouthparts relative to the head. Distributed worldwide, all members of this group are plant-feeders (phytophagous), and many are major crop and ornamental pests. Many exhibit modified morphology and/or lifecycles, including phenomena such as flightless morphs, parthenogenesis, sexual dimorphism, and eusociality. ==Groups== Well-known groups in the Sternorrhyncha include: * aphids – (Aphididae) * woolly and gall-making aphids (Eriosomatinae) * pine and spruce aphids (Adelgidae, Chermesidae) * phylloxerans (Phylloxeridae, including the vine phylloxera) * whiteflies – (Aleyrodidae) * jumping plant lice (Psyllidae and allied families) * Superfamily Coccoidea (scale insects) * * cottony cushion scales, giant coccids, and ground pearls (Margarodidae) * * armoured scales (Diaspididae) * * cochineal insects (Dactylopiidae) * * lac scales (Kerriidae, Lacciferidae, Tachardinidae) * * soft scales (Coccidae) * * pit scales (Asterolecaniidae) * * mealybugs (Pseudococcidae) * * felted scales (Eriococcidae) 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「sternorrhyncha」の詳細全文を読む スポンサード リンク
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