Question:
Which of the following is a Sal heartwood borer?
Which of the following is a Sal heartwood borer?
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Remember: Sal + Heartwood = Hoplocerambyx. It is one of the most frequently asked entomology questions in forestry exams.
Updated On: Aug 20, 2026
- Hoplocerambyx spinicornis
- Plecoptera reflexa
- Ectropis deodarae
- Eutectona machaeralis
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Question:
This question asks for the scientific name of the most destructive insect pest that attacks the heartwood of the Sal tree (Shorea robusta).
Step 2: Detailed Explanation:
• $Hoplocerambyx$ $spinicornis$, commonly known as the Sal Heartwood Borer, is the most dreaded pest of Sal forests in India. It belongs to the family Cerambycidae (longhorn beetles).
• The larvae of this beetle bore deep into the heartwood of healthy as well as weakened Sal trees. They create extensive tunnels that destroy the structural integrity and timber value of the tree, often leading to its death.
• Outbreaks of this borer can be catastrophic, destroying thousands of hectares of forest. Management traditionally involves "Trap Tree" operations, where freshly felled Sal logs are used to attract and kill the beetles during their flight season.
• Plecoptera reflexa is a defoliator of Shisham; Ectropis deodarae is a defoliator of Deodar; and Eutectona machaeralis is the Teak Skeletonizer.
• Because the borer attacks the valuable heartwood, it is a major concern for forest departments from a commercial and conservation standpoint.
Step 3: Final Answer:
$Hoplocerambyx$ $spinicornis$ is the Sal heartwood borer.
This question asks for the scientific name of the most destructive insect pest that attacks the heartwood of the Sal tree (Shorea robusta).
Step 2: Detailed Explanation:
• $Hoplocerambyx$ $spinicornis$, commonly known as the Sal Heartwood Borer, is the most dreaded pest of Sal forests in India. It belongs to the family Cerambycidae (longhorn beetles).
• The larvae of this beetle bore deep into the heartwood of healthy as well as weakened Sal trees. They create extensive tunnels that destroy the structural integrity and timber value of the tree, often leading to its death.
• Outbreaks of this borer can be catastrophic, destroying thousands of hectares of forest. Management traditionally involves "Trap Tree" operations, where freshly felled Sal logs are used to attract and kill the beetles during their flight season.
• Plecoptera reflexa is a defoliator of Shisham; Ectropis deodarae is a defoliator of Deodar; and Eutectona machaeralis is the Teak Skeletonizer.
• Because the borer attacks the valuable heartwood, it is a major concern for forest departments from a commercial and conservation standpoint.
Step 3: Final Answer:
$Hoplocerambyx$ $spinicornis$ is the Sal heartwood borer.
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