Pine-weevil
Guides
Hilipinus
pine weevils
Hilipinus is a genus of weevils in the family Curculionidae, commonly known as pine weevils. The genus was established by G.C. Champion in 1902 and contains at least 50 described species. Members of this genus are associated with coniferous trees, particularly pines.
Hylobius pales
Pales Weevil
Hylobius pales, commonly known as the pales weevil, is a significant forest pest in North America that primarily attacks coniferous trees, especially species of Pinus. Adults are dark red-brown with yellowish or gray hair tufts on the elytra and thorax, and possess a robust, cylindrical, gently curved rostrum nearly as long as the thorax. The species is particularly damaging to young pine seedlings in cut-over areas and Christmas tree plantations, with mortality rates reaching 30-70% in unprotected plantings. Larvae develop in stumps and roots of host trees, while adults feed on bark.
Hylobius pinicola
Couper collar weevil
Hylobius pinicola, commonly known as the Couper collar weevil, is a species of pine weevil in the family Curculionidae. It is found in North America, with confirmed records from multiple Canadian provinces including Alberta, British Columbia, Labrador, and Manitoba. The species is associated with coniferous hosts, as indicated by its specific epithet 'pinicola' (pine-dwelling).
Hylobius radicis
Pine Root Collar Weevil
Hylobius radicis is a pine weevil in the family Curculionidae, described by Buchanan in 1935. Adults serve as hosts for the endoparasitic wasp Microctonus pachylobii, with field studies documenting parasitism rates of 8.5%. Parasite loads show seasonal variation, with higher rates observed in April–June compared to August–September.
Pachylobius
pine weevils
Pachylobius is a genus of pine weevils in the family Curculionidae, established by LeConte in 1876. The genus contains at least two described species: Pachylobius picivorus (pitch-eating weevil) and Pachylobius stupidus. Species in this genus are associated with coniferous hosts and have been documented as pests of pine regeneration in forest ecosystems.
Pachylobius picivorus
pitch-eating weevil, pitch eating weevil
Pachylobius picivorus, commonly known as the pitch-eating weevil, is a pine root-feeding weevil native to North America. The species is an economically significant pest of natural and planted pine seedlings, with brood development requiring 100–128 days during summer. Adults are long-lived and oviposit continuously at approximately 0.7 eggs per day per female throughout their lifespan. Populations exhibit two annual peaks in the Georgia Piedmont, driven by temperature and developmental cycles. Behavioral studies indicate the species responds strongly to olfactory cues, particularly ethanol and turpentine mixtures, though visual cues are less important for host location than in related species such as Hylobius pales.
pine-weevilroot-feeding-weevilforestry-pestPinus-pestCurculionidaeNorth-AmericaGeorgia-Piedmonttrap-response-behaviorethanol-turpentine-responsepine-seedling-damagelong-lived-adultcontinuous-ovipositionpopulation-peakssummer-brood-developmentolfactory-cue-responsevisual-cue-secondaryTedders-trapmodified-Tilles-trapeconomic-pestforest-regeneration-pestlarval-root-feedingpine-plantation-pestbehavioral-ecologyhost-finding-behaviorground-dwelling-weevilPachylobiusMolytinaePissodiniPissodes affinis
Pissodes affinis is a species of true weevil in the beetle family Curculionidae, first described by Randall in 1838. It is found in North America, with distribution records from Canada including Alberta, British Columbia, Manitoba, and New Brunswick. As a member of the genus Pissodes, it belongs to a group commonly known as pine weevils, though specific ecological details for this species remain limited. The species is accepted in taxonomic databases including GBIF and Catalogue of Life.