Phylloxeridae
Guides
Phylloxera
phylloxeras
Phylloxera is a genus of tiny, soft-bodied, sap-sucking insects in the family Phylloxeridae, closely related to aphids. The genus includes economically significant agricultural pests, most notably the grape phylloxera (Daktulosphaira vitifoliae), which devastated European vineyards in the late 19th century and remains a major threat to viticulture worldwide. Phylloxera species induce characteristic galls on host plants through chemical secretions that manipulate plant tissue development. The genus exhibits complex life cycles involving multiple morphological forms, including winged and wingless parthenogenetic generations and a brief sexual generation.
Phylloxera caryaegummosa
pecan phylloxera
Phylloxera caryaegummosa is a tiny, soft-bodied insect in the family Phylloxeridae, closely related to aphids. It is a significant pest of pecan (Carya illinoinensis), causing galls to form on shoots and nuts. This species is considered more damaging than pecan leaf phylloxera (Phylloxera notabilis), which affects only leaves. Heavy infestations can reduce yield, impair tree vitality, and curtail subsequent production. The insect has a complex life cycle involving multiple generations and forms, with winter survival as eggs protected within the bodies of dead females.
Phylloxera caryaesemen
pecan phylloxera, pecan nut phylloxera
Phylloxera caryaesemen is a small, soft-bodied, gall-forming insect closely related to aphids that attacks pecan trees (Carya illinoinensis). It is considered the most damaging phylloxera species on pecans because it attacks shoots and developing nuts, unlike the related pecan leaf phylloxera which feeds only on leaves. Heavy infestations can reduce current-year yield, impair tree vitality, and diminish subsequent production. The insect induces abnormal plant growths (galls) by secreting substances that stimulate tissue development, with nymphs completing development inside these protective structures.
Phylloxera caryaesepta
pecan leaf phylloxera, pecan phylloxera
Phylloxera caryaesepta is a tiny, soft-bodied insect in the family Phylloxeridae, closely related to aphids. It is a significant pest of pecan trees (Carya illinoinensis), forming conspicuous galls on leaves, twigs, and nuts. The species survives winter as eggs in bark crevices, with nymphs emerging during spring bud break to feed on new growth. Unlike the related pecan leaf phylloxera (Phylloxera notabilis) which attacks only leaves, P. caryaesepta damages shoots and nuts, making it more economically destructive. Heavy infestations can reduce yield, impair tree vitality, and curtail subsequent production.
Phylloxera chippokesiensis
Phylloxera chippokesiensis is a gall-forming insect in the family Phylloxeridae, closely related to aphids. Like other phylloxerans, it induces abnormal plant growths (galls) on host tissues through chemical secretions that redirect plant development. The species is named for Chippokes Plantation in Virginia, indicating an association with specific geographic or host plant contexts. As with congeners, it likely has a complex life cycle involving parthenogenetic reproduction within galls and seasonal transitions between winged and wingless forms.
Phylloxera echinus
Phylloxera echinus is a species of gall-forming insect in the family Phylloxeridae, closely related to aphids. Like other phylloxerans, this species induces abnormal plant growths (galls) on host plants through chemical secretions that manipulate plant tissue development. The specific host associations and gall morphology of P. echinus have not been well documented in available literature. The genus Phylloxera contains several economically important species, most notably the grape phylloxera (Daktulosphaira vitifoliae), though P. echinus itself appears to be poorly studied.
Phylloxera floridana
Phylloxera floridana is a species of phylloxeran, a small sap-sucking insect in the family Phylloxeridae. Phylloxerans are closely related to aphids and are known for inducing galls on host plants. The genus Phylloxera includes species that are significant agricultural pests, most notably the grape phylloxera (Daktulosphaira vitifoliae), though specific information about P. floridana's biology, host associations, and economic impact appears to be limited in available literature.
Phylloxera georgiana
Phylloxera georgiana is a gall-forming insect in the family Phylloxeridae, closely related to aphids. Like other phylloxerans, this species induces abnormal plant growths (galls) on its host plant through chemical secretions that manipulate plant development. The species was described by Pergande in 1904. Very few specific details about its biology, host associations, or distribution have been documented in the available literature.
Phylloxera killianae
Phylloxera killianae is a gall-forming insect in the family Phylloxeridae, closely related to aphids. Like other phylloxerans, it induces abnormal plant growths (galls) on host tissues through chemical secretions during feeding. The species overwinters as eggs in bark crevices, with nymphs emerging in spring to feed on new growth and stimulate gall formation. Specific host associations and detailed biology of P. killianae remain poorly documented compared to economically significant relatives such as the grape phylloxera (Daktulosphaira vitifoliae) and pecan phylloxera species.
Phylloxera paludis
Phylloxera paludis is a species of phylloxeran insect in the family Phylloxeridae, order Hemiptera. Phylloxerans are small, soft-bodied, sap-sucking insects closely related to aphids. Members of the genus Phylloxera are known for inducing gall formation on host plants through chemical secretions that alter plant tissue development. The specific epithet "paludis" suggests an association with marsh or wetland habitats, though detailed ecological studies of this particular species appear limited in the available literature.
Phylloxera perniciosa
pecan phylloxera
Phylloxera perniciosa, commonly known as the pecan phylloxera, is a gall-forming insect that attacks shoots and nuts of pecan trees (Carya illinoinensis). It is considered the most damaging phylloxera species affecting pecans, causing galls that reduce yield, impair tree vitality, and curtail subsequent production. The insect is closely related to aphids and survives winter as eggs in bark crevices. Unlike the pecan leaf phylloxera, which only forms galls on leaves, this species attacks reproductive and vegetative shoots, making it economically significant in commercial pecan production.
Phylloxera picta
Phylloxera picta is a species of gall-forming insect in the family Phylloxeridae, closely related to aphids. Like other phylloxerans, it induces abnormal plant growths (galls) on host trees through chemical secretions that manipulate plant tissue development. The species overwinters as eggs and has a complex life cycle involving multiple generations and both winged and wingless forms.
Phylloxera russellae
Phylloxera russellae is a small, soft-bodied insect in the family Phylloxeridae, closely related to aphids. Like other phylloxerans, it induces gall formation on host plants through chemical secretions that manipulate plant tissue development. The species was described by Stoetzel in 1981. Members of the genus Phylloxera are known for complex life cycles involving multiple generations and forms, including winged and wingless morphs.
Phylloxera symmetrica
Phylloxera symmetrica is a gall-forming insect in the family Phylloxeridae, closely related to aphids. Like other phylloxerans, this species induces abnormal plant growths (galls) on host plants through chemical secretions that manipulate plant development. The species was described by Pergande in 1904. Members of the genus Phylloxera are known for complex life cycles involving both sexual and asexual generations, with overwintering eggs and multiple gall-forming generations per year.
Phylloxera tuberculifera
Phylloxera tuberculifera is a gall-forming insect species in the family Phylloxeridae, first described by Duncan in 1922. As with other phylloxerans, this species induces abnormal plant growths (galls) on host plants through chemical secretions that redirect plant tissue development. The species belongs to a genus containing several economically significant pests, particularly of pecan and grape. Specific host associations and detailed biology for P. tuberculifera remain poorly documented in published literature.