Which pest is described as causing needles to twist and be sticky on true firs?

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Prepare for the Oregon Forestry Pesticide Applicator Exam with flashcards and multiple choice questions. Each question includes hints and explanations to help you succeed. Get ready for your test!

Multiple Choice

Which pest is described as causing needles to twist and be sticky on true firs?

Explanation:
Needles that are twisted and feel sticky point to honeydew, a sugary secretions drop by sap-sucking insects feeding on the new growth of true firs. Among common fir pests, the balsam twig aphid targets true firs, feeding on growing shoots and buds and causing the needles to twist and curl. The honeydew they produce makes the needles sticky, which fits the described symptoms exactly. Other pests listed are not typically associated with this combination of twisted needles and sticky surfaces on true firs, so they don’t match the symptom pattern as well.

Needles that are twisted and feel sticky point to honeydew, a sugary secretions drop by sap-sucking insects feeding on the new growth of true firs. Among common fir pests, the balsam twig aphid targets true firs, feeding on growing shoots and buds and causing the needles to twist and curl. The honeydew they produce makes the needles sticky, which fits the described symptoms exactly. Other pests listed are not typically associated with this combination of twisted needles and sticky surfaces on true firs, so they don’t match the symptom pattern as well.

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