Anholocyclic
Guides
Cinara curvipes
Bow-legged Fir Aphid
Cinara curvipes is a large, black bark aphid native to North America that has become invasive in Central Europe since 2000. Adults measure 4.5–5.3 mm. The species exhibits remarkable life cycle flexibility, with populations capable of both holocyclic (sexual) and anholocyclic (parthenogenetic) reproduction. In its invaded range, it can form exceptionally large colonies of thousands of individuals by May—a phenomenon not observed in native European Cinara species. The aphid secretes copious honeydew throughout most of the year, supporting diverse insect communities.
Panaphidini
Panaphidini is a tribe of aphids within the subfamily Calaphidinae, established by Oestlund in 1923. The tribe comprises approximately 50 genera divided into two subtribes: Myzocallidina and Panaphidina. Many genera are associated with woody host plants, particularly in the families Fagaceae, Betulaceae, and Salicaceae. The tribe includes economically significant pests such as species of Tinocallis and Monellia.
Pemphigus populiglobuli
poplar bullet gall aphid
Pemphigus populiglobuli is a Nearctic aphid species known for forming bullet-shaped galls on poplar leaves during its primary generation. The Svalbard High Arctic population represents a remarkable secondary generation that has lost its primary host association and adapted to year-round root-feeding on grasses. Molecular analyses confirmed these specimens belong to P. populiglobuli rather than the historically assumed P. groenlandicus. The study proposes synonymizing P. groenlandicus and its subspecies crassicornis under P. populiglobuli based on morphometric similarity across Arctic and European populations.
Takecallis
bamboo aphids
Takecallis is a genus of bamboo-feeding aphids in the family Aphididae, containing approximately 7-8 species of Oriental origin. All species are specialized herbivores on bamboo (subfamily Bambusoideae). Native to Southeast Asia including China, India, Japan, Korea, and Taiwan, several species have been introduced to Europe, Africa, the Americas, and Oceania through the ornamental bamboo trade. Some introduced populations exhibit invasive characteristics including range expansion and holocyclic or anholocyclic reproduction strategies.
Uroleucon erigeronense
Large fleabane daisy aphid
Uroleucon erigeronense is a species of aphid in the family Aphididae, first described by Thomas in 1878. It feeds primarily on plants in the Asteraceae family, with a particular association with Erigeron (fleabane) species. The species exhibits flexible reproductive strategies: holocyclic in northern climates, producing sexual forms in autumn, and anholocyclic in warmer regions. It shows seasonal host-shifting behavior, moving between overwintering perennial hosts and blooming annuals. Native to North America, it has been introduced to Europe, Australia, and Korea.