Cylindrocopturus eatoni

Buchanan, 1940

pine reproduction weevil

A in the , commonly known as the pine weevil. are black with dense grayish and are capable fliers, though they frequently hop when disturbed. The species is a documented pest of young ponderosa pine (Pinus ponderosa) and Jeffrey pine (P. jeffreyi), attacking reproductive structures and bark. It has been observed in Oregon and is associated with coniferous forest .

Pronunciation

How to pronounce Cylindrocopturus eatoni: //sɪˌlɪndroʊˌkɒpˈtʊərəs ˈiːtoʊni//

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Identification

are black and densely covered with grayish . When disturbed, individuals hop rather than , a that frequently leads to misidentification as ( ). The combination of (elongated snout, ) with this hopping behavior distinguishes it from true leafhoppers.

Habitat

Coniferous forests dominated by ponderosa pine and Jeffrey pine. and are specifically associated with the bark of main stems and twigs of pines, as well as cone and seed tissues.

Distribution

North America; documented from Oregon. GBIF records indicate presence in North America.

Diet

tunnel in the outer layers of roots, feeding on phloem and xylem. feed on young ponderosa pine and Jeffrey pine. The specifically targets reproductive structures (cones and seeds) of these pine species, causing injury to pine .

Host Associations

  • Pinus ponderosa - pestponderosa pine; attacked for cones, seeds, bark
  • Pinus jeffreyi - pestJeffrey pine; attacked for cones, seeds, bark

Life Cycle

are laid singly in excavated in the bark of main stems and twigs. Cream-colored hatch within a few days and begin tunneling in the outer layers of roots, feeding on phloem and xylem. Larvae pupate in spring. The completes one per year.

Behavior

are capable fliers but characteristically hop when disturbed, a that frequently results in misidentification as . Females excavate in bark for deposition.

Ecological Role

that reduces reproductive success of pine through damage to cones, seeds, and root tissues. Larval tunneling in root phloem and xylem may affect tree vigor.

Human Relevance

Economic pest of pine in forestry contexts; has been subject to research on development of pine varieties. Damage to cones and seeds reduces seed availability for natural and commercial seed collection.

Similar Taxa

  • Hylobius palesShares 'pine ' and similar ecological role as pest of pine reproduction; distinguished by and specific associations
  • Pachylobius picivorusShares 'pine ' and similar ecological role; distinguished by morphological features and geographic distribution

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Sources and further reading