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Aphis craccivora, variously known as the cowpea aphid, groundnut aphid or black legume aphid, is a true bug in the family Aphididae. [2] Originally of probable Palearctic origin, it is now an invasive species of cosmopolitan distribution .
The life cycle of some species involves an alternation between two species of host plants, for example between an annual crop and a woody plant. Some species feed on only one type of plant, while others are generalists, colonizing many plant groups. About 5,000 species of aphid have been described, all included in the family Aphididae.
Most aphid species can reproduce both asexually and sexually, with several parthenogenetic generations between each period of sexual reproduction. This is known as cyclical parthenogenesis and, in temperate regions, sexual reproduction occurs in autumn and results in the production of overwintering eggs, which hatch the following spring and ...
Aphis gossypii — cotton aphid; Aphis glycines — soybean aphid; Aphis helianthi — sunflower aphid; Aphis nerii — oleander aphid; Aphis pomi — apple aphid; Aphis rubicola — small raspberry aphid; Aphis rumicis - black aphid; Aphis spiraecola — spirea aphid (syn. Aphis citricola — citrus aphid) Aphis valerianae — black valerian aphid
The tobacco specialist subspecies, M. persicae nicotianae, known as the tobacco aphid, is a great example of speciation events that occur in the green peach aphid's evolutionary history. For instance, this subspecies has preserved its genomic integrity throughout time across a wide geographical scale by maintaining its primarily asexual life cycle.
Aphis gossypii is a tiny insect, an aphid ("greenfly") in the superfamily Aphidoidea in the order Hemiptera. It is a true bug and sucks sap from plants. It is a widely distributed pest of a variety of agricultural crops in the families Cucurbitaceae, Rutaceae and Malvaceae. [2] Common names include cotton aphid, melon aphid and melon and cotton ...
Well-known groups in the Sternorrhyncha include: aphids – (); woolly and gall-making aphids (Eriosomatinae)pine and spruce aphids ()phylloxerans (Phylloxeridae, including the vine phylloxera)
Sitobion avenae, the English grain aphid, is an aphid in the superfamily Aphidoidea in the order Hemiptera. It is a true bug and sucks sap from plants. It is a true bug and sucks sap from plants. It lives on grasses, sedge and rushes and can be a significant pest of cereals.