Dioryctria westerlandi

Donahue & Neunzig, 2002

Westerland's Coneworm Moth

Dioryctria westerlandi is a small coneworm described in 2002 from California. are pale with strongly contrasting dark transverse bands and reddish patches on the wings. The species is active in late summer and fall, with adults flying from July through October. Larvae are suspected to feed on Jeffrey pine (Pinus jeffreyi).

Pronunciation

How to pronounce Dioryctria westerlandi: //ˌdaɪəˈɹɪktɹiə ˈwɛstərˌlændi//

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Identification

Small size (13.5–18.5 mm wingspan) distinguishes it from larger Dioryctria . Pale coloration with strongly contrasting dark transverse bands and reddish patches separates it from other western North American Dioryctria. Banding pattern more pronounced than in related species. Genitalia examination required for definitive identification from similar coneworm moths.

Appearance

Small with wingspan of 13.5–18.5 mm. pale-colored with strongly contrasting dark transverse bands across wings. Reddish patches present on wings. Overall pattern provides distinct banded appearance against light background.

Habitat

Associated with coniferous forests, particularly those containing Jeffrey pine (Pinus jeffreyi). Specific microhabitat requirements for larvae unknown, but likely within cones or shoots of pine.

Distribution

Known from California, with possible range extension into Nevada. Western North American .

Seasonality

active July through October. Single per year suggested by period.

Diet

Larvae possibly feed on Pinus jeffreyi (Jeffrey pine). Specific feeding habits otherwise unknown.

Host Associations

  • Pinus jeffreyi - probable larval plantsuspected based on limited records

Ecological Role

As a coneworm , larvae likely function as primary consumers of conifer reproductive structures, potentially affecting seed production. Specific ecological impacts unknown.

Human Relevance

Potential minor pest of Jeffrey pine seed production. No documented economic significance. Too recently described for established management protocols.

Similar Taxa

  • Dioryctria auranticellaAlso western North American coneworm feeding on pines, but larger and with different wing pattern (orange-tinged rather than pale with reddish patches)
  • Dioryctria abietellaEuropean coneworm with similar but distribution and different preferences
  • Other Dioryctria speciesMany in are morphologically similar; require genitalia dissection for definitive identification

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Sources and further reading