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Photographic Atlas of Beijing Aphids (Aphidoidea)，It briefly introduced the basic knowledge of aphids, such as the morphological characteristics, polymorphism, parthenogenetic reproduction,natural enemies, alarm pheromone, host plants, mutual relationships with ants and endosymbionts etc. It discussed the importance of the obligatory or primary endosymbiont, Buchnera bacteria, in geographical distribution (much high aphid diversity in the temperate zone on the northern hemisphere) and biology (low aphid density in summer or host alternation for avoiding hot seasons), likely from the nature of the primary endosymbiont which is active in cool temperatures. The species accounts contain 195 aphid species. Each species is provided with up to 9 images including galls or damage to host plants for some species. Images are taken in field with a few indoor ones. Each species includes succinct text with information on scientific name, recognition, host plants and concise biology, and distribution. One new synonym is suggested, 48 species are recorded as new to Beijing, and 8 of them are new records to China.

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