Holocyclic
Guides
Anoecia
Anoecia is a genus of root-feeding aphids in the subfamily Anoeciinae. Species are primarily subterranean, spending much of their life cycle underground on grass and sedge roots. The genus includes approximately 30 described species distributed across the Holarctic region. Several species exhibit complex life cycles involving migration between woody spring hosts (notably dogwood, Cornus) and herbaceous summer hosts.
Anoecia corni
dogwood aphid, common dogwood-grass aphid, dogwood-grass aphid
Anoecia corni is a subterranean aphid species that alternates between dogwood trees and grass roots during its life cycle. Native to Europe, it has been introduced to North America. The species feeds primarily on xylem tissues and has been recorded as a pest of millets. It maintains associations with bacterial endosymbionts including the obligate symbiont Buchnera aphidicola and several facultative symbionts.
Aphidina
Aphidina is a subtribe of aphids within the family Aphididae, established by Latreille in 1802. It encompasses numerous genera including economically significant and xerophilous species. Members exhibit diverse life cycles, with some species amenable to genetic control methods due to their holocyclic heterogenetic reproduction. The subtribe includes species with specialized host associations, particularly on Asteraceae, Chenopodiaceae, and Amaranthaceae.
Aphis gossypii
cotton aphid, melon aphid, melon and cotton aphid, greenfly
Aphis gossypii is a small sap-sucking aphid and significant agricultural pest with a global distribution. It infests crops in at least three plant families, particularly Cucurbitaceae, Rutaceae, and Malvaceae, causing direct damage through feeding and indirect damage as a vector of plant viruses. The species exhibits complex life cycle strategies including both holocyclic (sexual) and anholocyclic (asexual) reproduction depending on geographic location and climate. It has developed resistance to multiple insecticide classes, complicating management efforts.
Aphis illinoisensis
grapevine aphid
Aphis illinoisensis, commonly known as the grapevine aphid, is a phytophagous insect native to North America that has become invasive in Mediterranean regions and other grape-growing areas worldwide. It is a documented vector of Grapevine vein clearing virus (GVCV), transmitting the pathogen from wild Vitaceae to cultivated grapevines. The species exhibits holocyclic life cycle characteristics with documented overwintering on Viburnum species. Its invasive expansion across Europe, North Africa, and the Middle East has prompted biocontrol research using native parasitoids and entomopathogenic bacteria.
Aphis rubicola
Aphis rubicola is a species of aphid in the family Aphididae, described by Oestlund in 1887. The species exhibits holocyclic life cycle with seasonal polyphenism, producing sexual morphs (males and oviparae) in response to short-day photoperiods. Laboratory studies demonstrate that temperature significantly modifies sexual morph production, with lower temperatures enhancing the transition to sexual reproduction. The specific epithet suggests association with Rubus (raspberry/blackberry) as a host plant, though this has not been explicitly confirmed in available sources.
Calaphidini
Calaphidini is a tribe of aphids in the subfamily Calaphidinae, family Aphididae. The tribe comprises approximately 18 genera divided into two subtribes: Calaphidina and Monaphidina. Members are phloem-feeding insects associated primarily with woody host plants, particularly in the families Betulaceae and Salicaceae. The tribe was established by Oestlund in 1919 and is widely distributed across temperate regions of the Northern Hemisphere.
Cavariella
Willow-Umbellifer Aphids
Cavariella is a genus of aphids in the family Aphididae, tribe Macrosiphini. It is distinguished from other Macrosiphini genera by a supra-caudal process on abdominal tergite VIII bearing two distal setae. The genus has a Holarctic distribution with approximately half its species occurring in Asia. Species in this genus exhibit a characteristic life cycle involving primary hosts in Salicaceae (willows) and secondary hosts in Apiaceae (umbellifers), making them economically significant as pests of carrot and other crops.
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.
Colopha
Colopha is a genus of gall-forming aphids in the family Aphididae, first described by Monell in 1877. Species in this genus induce distinctive galls on host plants, most notably the elm cockscomb gall on American elm. The genus exhibits complex life cycles involving host alternation between woody plants and grasses, with both bisexual and unisexual reproductive strategies documented across species.
Drepanaphis
Painted maple aphids
Drepanaphis is a Nearctic genus of aphids comprising 18 species, all native to North America. These insects are narrow oligophages primarily associated with maple trees (Acer spp.), with one species (D. monelli) recorded on buckeye. The genus is characterized by distinct dorsal abdominal tubercles, very long antennae, and reduced leg chaetotaxy. Drepanaphis acerifoliae, the painted maple aphid, has the broadest distribution and is the only species introduced to Europe. Unlike many aphids, Drepanaphis species do not form dense colonies and are not attended by ants.
Hayhurstia atriplicis
Chenopodium aphid, Saltbush Leaf-Fold Aphid
Hayhurstia atriplicis is a holocyclic, monoecious aphid species associated with Chenopodium host plants. It is considered economically indifferent but serves as a perennial reservoir for parasitoid species, particularly Diaretiella rapae and Ephedrus nacheri. These parasitoids have been utilized in biological control programs targeting other pest aphids, including Diuraphis noxia and Schizaphis graminum.
Hyalopterus pruni
Mealy Plum Aphid
Hyalopterus pruni, the mealy plum aphid, is a sap-feeding aphid in the family Aphididae with a cosmopolitan distribution. It exhibits a complex life cycle involving multiple generations of wingless adults followed by the production of winged migrants that disperse to secondary hosts. The species is notable for its waxy covering and seasonal host alternation between Prunus species and grasses or reeds.
Lachninae
Giant Aphids
Lachninae is a subfamily of aphids (Aphididae) notable for containing some of the largest-bodied aphid species, commonly referred to as 'giant aphids.' Members are distinguished by greatly reduced or vestigial cornicles compared to other aphids. The subfamily exhibits a unique dual symbiotic system involving Buchnera and co-obligate secondary endosymbionts, primarily Serratia symbiotica, which compensates for riboflavin biosynthetic deficiencies in the primary symbiont. This group has been historically treated as a separate family (Lachnidae) by some authors. The subfamily includes economically significant species associated with coniferous and broadleaf trees.
Metopolophium dirhodum
rose-grain aphid, rose-grass aphid
Metopolophium dirhodum is a globally distributed aphid species with a heteroecious life cycle alternating between rose (Rosa) as primary host and grasses, particularly cereal crops, as secondary hosts. It is a significant agricultural pest and vector of barley yellow dwarf virus (BYDV), causing yield reductions in wheat, barley, oats, and rye. The species exhibits wing dimorphism with both apterous and alate morphs, and shows genetic variability in host plant adaptation among populations.
Mindarus
balsam twig aphid
Mindarus is a genus of conifer-feeding aphids in the family Mindaridae, commonly known as balsam twig aphids. Species in this genus are specialized phloem feeders on fir trees (Abies spp.), where they cause needle discoloration, shoot deformation, and reduced aesthetic quality. Several species are significant economic pests in Christmas tree plantations, particularly M. abietinus on balsam fir and M. pinicola on Fraser fir. The genus exhibits a holocyclic life cycle with overwintering eggs, spring fundatrices, and summer parthenogenetic generations.
Myzocallis
Oak and Chestnut Aphids
Myzocallis is a genus of aphids (Aphididae) comprising over 40 species with diverse host associations. Species feed on woody plants including oaks (Quercus), chestnuts (Castanea), hazelnuts (Corylus), myrtle (Myrica), and milkweeds (Apocynaceae). The genus exhibits host-specificity at the species level, with some taxa restricted to single host genera. Several species are minor agricultural pests, particularly of hazelnut and chestnut. The genus has a cosmopolitan distribution with notable diversity in the Palearctic region.
Myzocallis coryli
Hazel Aphid, Filbert Aphid
Myzocallis coryli, commonly known as the hazel aphid or filbert aphid, is a specialist phloem-feeding aphid that exclusively infests species of the genus Corylus (hazelnuts). Native to Europe, it has established populations in North America and was first recorded in Tasmania in 2019 as a recent introduction. The species is a significant agricultural pest in hazelnut orchards, particularly in Oregon and Turkey, where heavy infestations can stunt nut development and reduce commercial viability. Population dynamics are strongly temperature-dependent, with optimal development around 22°C and decline above 25°C.
Neoprociphilus aceris
woolly maple aphid, woolly alder aphid
Neoprociphilus aceris is a woolly aphid species in the family Aphididae, commonly known as the woolly maple aphid or woolly alder aphid. It exhibits a holocyclic life cycle with alternating sexual and parthenogenetic generations on alder trees (Alnus spp.). The species produces dense woolly wax secretions covering its body, forming conspicuous colonies on branches and twigs. It is a phloem-feeding specialist with documented host associations primarily with alder, though its common name suggests potential maple associations that require verification.
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 spyrothecae
Poplar Spiral Gall Aphid
Pemphigus spyrothecae is a gall-forming aphid that induces distinctive spiral-shaped galls on leaf petioles of Populus nigra. The species exhibits eusocial behavior with a sterile soldier caste comprising first-instar nymphs with thickened hind legs that defend the colony against predators. Colony defense includes fortress defense, gall repair, and maintenance of colony hygiene. The aphid has a holocyclic life cycle with four generations: fundatrix, apterous virginoparae, alate sexuparae, and sexual males and females. Genetic relatedness within galls is high due to clonal reproduction, with clonal mixing averaging 0.68-10.4% across populations.
Periphyllus
Periphyllus Aphids, maple aphids
Periphyllus is a genus of aphids in the family Aphididae, subfamily Chaitophorinae, containing more than 40 described species. Species in this genus are primarily associated with maple trees (Acer spp.), though some feed on related host plants such as Koelreuteria. Many species exhibit complex life cycles with polymorphic forms including viviparous females, aestivating dimorphs, and sexual morphs. Several species are invasive pests outside their native ranges, spreading with ornamental host plants.
Pterocallis
Alder Aphids
Pterocallis is a genus of aphids in the family Aphididae, tribe Pterocallidini. Species in this genus are associated with alder trees (Alnus spp.) as their primary hosts. The genus occurs across Europe, Northern America, and New Zealand. The most studied species, Pterocallis alni, feeds on common alder (Alnus glutinosa) and exhibits temperature-driven population dynamics.
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.
Tetraneura
elm-grass root aphids, woolly elm aphids
Tetraneura is a genus of gall-forming aphids in the family Aphididae, comprising more than 30 described species. These aphids are heteroecious, alternating between primary hosts in the genus Ulmus (elms), where they induce characteristic galls on leaves, and secondary hosts in the family Poaceae (grasses), where they feed on roots. The genus is notable for complex host manipulation, with species capable of altering host plant biochemistry to create nutritional sinks within galls. Several species, including the alien T. nigriabdominalis, are expanding their ranges in Europe and pose potential threats to cereal crops such as maize.
Tetraneura nigriabdominalis
Tetraneura nigriabdominalis is a holocyclic, heteroecious gall-forming aphid native to East Asia that has expanded its range globally and is now established in Europe and North America. The species alternates between primary hosts (elm trees, genus Ulmus) and secondary hosts (roots of grasses in the family Poaceae, including maize). On elms, fundatrices induce characteristic galls on leaves, with development rates and fecundity strongly influenced by spring temperatures. The species has been documented as a potential agricultural pest due to its association with cultivated maize.
Tinocallis
elm aphids, crapemyrtle aphids
Tinocallis is a small genus of aphids in the subfamily Calaphidinae, comprising eight described species. Most species are associated with Ulmaceae (elm family), though one notable exception, T. kahawaluokalani (the crapemyrtle aphid), is a specialist pest of Lagerstroemia indica. Species exhibit holocyclic life cycles with both parthenogenetic summer generations and sexual autumn generations producing overwintering eggs. Several species are economically significant as pests of ornamental trees in urban landscapes.
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.