Root-feeding
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.
Anoeciinae
Anoeciinae is a subfamily of root-feeding aphids within Aphididae. Members are obligate subterranean insects that live and feed on plant roots. The subfamily contains four genera, including two extinct fossil taxa from Baltic amber. Unlike many aphids, anoeciines do not alternate between hosts and remain underground throughout their life cycle.
Bactridium
root-eating beetles
Bactridium is a genus of beetles in the family Monotomidae, commonly referred to as root-eating beetles. The genus contains approximately 18 described species. These beetles belong to the order Coleoptera and are part of a family characterized by small size and association with decaying organic matter.
Barypeithes pellucidus
Barypeithes pellucidus is a European weevil species in the family Curculionidae. It has been introduced to North America, where it has been established in hardwood forests for over a century. The species is currently recognized as a synonym of Exomias pellucidus in some taxonomic databases.
Cleonini
Cleonini is a tribe of weevils within the subfamily Lixinae, comprising approximately 96 extant genus-group taxa distributed globally. All extant members are hypothesized to be flightless despite frequently possessing fully developed wings (macropterous), a unique condition among Lixinae. The tribe exhibits widespread adult morphological homoplasy that obscures phylogenetic relationships, with many genera radiating from a common ancestor with weakly resolved internal branching. Cleonini are primarily associated with arid and semi-arid habitats, including deserts and steppe environments across North Africa, the Middle East, Central Asia, and western North America.
Dichrorampha
Dichrorampha is a genus of small tortricid moths in the subfamily Olethreutinae, comprising over 100 described species distributed across Europe, Asia, and North America. The genus includes both diurnal and crepuscular species, many associated with mountain and alpine habitats. Several species have been investigated as biological control agents for invasive weeds, including D. aeratana for oxeye daisy and D. odorata for Chromolaena odorata. The genus has been subject to recent taxonomic revision, with cryptic species discovered through integrative approaches combining morphology and molecular data.
Dichrorampha aeratana
Obscure Drill
Dichrorampha aeratana is a small tortricid moth native to Europe, first described in 1915. The species has gained scientific attention as a potential biological control agent for the invasive weed oxeye daisy (Leucanthemum vulgare) in North America and Australia. Adults are active in spring, with larvae feeding internally on host plant roots and rhizomes. The moth exhibits strong host specificity, with larval survival negatively associated with increasing ploidy levels in host plants.
Hylastes
Hylastes is a genus of crenulate bark beetles in the family Curculionidae, comprising over 90 species. Members are primarily associated with coniferous hosts, particularly pines and spruces, where they breed in stumps, roots, and stressed or dying trees. Several species are economically significant as vectors of fungal pathogens causing tree mortality. The genus has a fossil record extending to the Eocene, with Hylastes perkovskyi described from Rovno amber.
Hylastes nigrinus
Hylastes nigrinus is a root-feeding bark beetle in the family Curculionidae (subfamily Scolytinae) that breeds in the roots and stumps of Douglas-fir (Pseudotsuga menziesii), particularly in trees killed by Dendroctonus pseudotsugae. The species exhibits strong temperature-dependent emergence and light-influenced flight behavior, with peak activity occurring in late afternoon or early evening. It is a suspected vector of the pathogen Verticicladiella wageneri, which causes black stain root disease. Development typically spans one year, with five larval instars and overwintering by both adults and mature larvae in galleries.
Melanaethus uhleri
Melanaethus uhleri is a species of burrowing bug in the family Cydnidae, order Hemiptera. The genus Melanaethus belongs to the burrowing bug family Cydnidae, a group of true bugs adapted for digging in soil and associated with roots of plants. Species in this genus are typically found in the Nearctic region. As with other cydnids, M. uhleri likely exhibits subterranean habits and feeds on plant roots, though specific biological details for this species remain poorly documented in the accessible literature.
Pacarina
Little Specklewings
Pacarina is a genus of cicadas in the family Cicadidae, distributed in the Neotropical region. The genus remained poorly known until 2020, when the first definitive host plant and rearing records were published. Twenty-nine adults emerged from the soil of a potted Dracaena trifasciata plant in Panama, revealing that nymphs develop underground feeding on host plant roots. These reared specimens likely represent an undescribed species, highlighting how much remains unknown about this genus.
Pachypappa pseudobyrsa
Pachypappa pseudobyrsa is a North American aphid species in the family Aphididae, subfamily Pemphiginae. It belongs to a genus of root-feeding aphids associated with poplar and cottonwood trees (Populus spp.). The species was described by Benjamin Walsh in 1863 and is part of a taxonomically complex group of gall-forming and free-living aphids with alternating generations between tree hosts and secondary hosts.
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.
Pemphigus populivenae
Sugarbeet Root Aphid
Pemphigus populivenae is a root-feeding aphid in the family Aphididae, commonly known as the Sugarbeet Root Aphid. It belongs to the genus Pemphigus, which comprises gall-forming and root-feeding aphids primarily associated with poplar (Populus) species as primary hosts. The species has been historically documented in North America since the mid-19th century. Like other Pemphigus species, it exhibits a complex life cycle involving host alternation between poplar trees and secondary herbaceous hosts.
Pemphigus tartareus
Pemphigus tartareus is a North American aphid species in the family Aphididae, described by Hottes and Frison in 1931. It belongs to the genus Pemphigus, which comprises root-feeding aphids often associated with gall formation or subterranean development on host plants. The species has been historically confused with other root-infesting aphids in agricultural and horticultural contexts, particularly in discussions of "root aphid" pests.
Pentodontini
rhinoceros beetles
Pentodontini is the most diverse tribe within the subfamily Dynastinae (rhinoceros beetles), containing over 100 genera distributed across multiple biogeographic regions. Most genera are restricted to a single biogeographic region. The tribe is characterized by substantial morphological diversity, with generic-level identification often relying on mouthpart morphology in females and secondary sexual characters (horns, claw modifications, antennal club length) in males.
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inepta
May beetle, June beetle
Phyllophaga inepta is a species of scarab beetle in the family Scarabaeidae, commonly known as a May beetle or June beetle. It belongs to one of the most speciose genera in North American beetles, with over 400 species. Like other members of the genus, it has a subterranean larval stage that feeds on plant roots and an adult stage that feeds on foliage.
Phyllophaga latifrons
May beetle, junebug
Phyllophaga latifrons is a species of scarab beetle in the genus Phyllophaga, commonly known as May beetles or junebugs. The species was originally described by LeConte in 1856 under the name Lachnosterna latifrons. It is found in the eastern and southeastern United States, with records from Alabama, Florida, Georgia, Louisiana, Maryland, Mississippi, New Jersey, North Carolina, South Carolina, and Virginia.
Phyllophaga renodis
Phyllophaga renodis is a species of scarab beetle in the genus Phyllophaga, commonly known as May beetles or June bugs. The genus Phyllophaga is one of the most species-rich genera in North America, with over 400 species. Species-level identification within this genus is notoriously difficult and typically requires examination of male and female genitalia. P. renodis is documented from Texas in the Nearctic region. Like other members of the genus, it likely has a subterranean larval stage feeding on plant roots and above-ground adults that feed on foliage.
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.
Protaphis middletonii
Corn Root Aphid
Protaphis middletonii is an aphid species in the family Aphididae, described by Thomas in 1879. It is commonly known as the Corn Root Aphid. The species is recognized as a pest of millets and other cereal crops. It has been documented in Brazil and is represented by limited but confirmed observations.
Psila
Psila is a genus of rust flies in the family Psilidae, established by Meigen in 1803. The genus is native to Europe and contains species that are significant agricultural pests, particularly of root vegetables. The most well-studied species is Psila rosae, commonly known as the carrot rust fly or carrot fly, which attacks carrot, parsnip, celery, and related crops. Members of this genus are characterized by their slender body form typical of psilid flies and their association with Apiaceae host plants.
Rhizophagus parallelocollis
graveyard beetle
Rhizophagus parallelocollis, commonly known as the graveyard beetle, is a small root-eating beetle in the family Monotomidae. It occurs in both North America and Europe. The species is characterized by its parallel-sided pronotum, a trait reflected in its specific epithet. Like other members of its genus, it is associated with subterranean habitats and fungal associations.
Rhopalosiphoninus
Rhopalosiphoninus is a genus of aphids in the family Aphididae. Species in this genus are distributed across Europe, Australia, and North America. The genus includes both above-ground and subterranean-feeding species. At least one species, Rhopalosiphoninus latysiphon, is restricted to potato roots due to climatic intolerance of aerial conditions.
Rhopalosiphoninus latysiphon
bulb-and-potato aphid
Rhopalosiphoninus latysiphon is an aphid species that infests subterranean plant parts, particularly potato roots and bulbs of ornamental plants such as tulip and gladiolus. Its common name reflects its association with both bulb crops and potatoes. The species is distinguished by its preference for cool, damp environments and avoidance of above-ground foliage under normal field conditions. Two subspecies have been described but may be synonyms.
Tetanops integer
Tetanops integer is a species of picture-winged fly in the family Ulidiidae (formerly Otitidae). It belongs to a genus whose larvae develop in the roots of living plants, making it one of the few ulidiid species considered potentially pestiferous. The species was described by Loew in 1873 and is currently accepted under that name.
Tetanops luridipennis
Tetanops luridipennis is a picture-winged fly in the family Ulidiidae, originally described by Loew in 1873. The genus Tetanops comprises approximately six species, with larvae that develop in the roots of living plants—a trait unusual among ulidiids, which are typically associated with decaying organic matter rather than living plant tissue. The specific epithet "luridipennis" refers to the yellowish or sallow coloration of the wings.
Tetanops magdalanae
Tetanops magdalanae is a species of picture-winged fly in the family Ulidiidae. The genus Tetanops comprises six species in North America, all of which develop as larvae in the roots of living plants. Unlike most ulidiids, which are not considered pests, Tetanops species are exceptional in this regard. The specific epithet 'magdalanae' suggests a possible association with a location or person, though this is not documented in the provided source.