Blackheaded fireworm

Definition

A common name for Rhopobota naevana, a tortricid moth whose larvae are foliage-tying pests of woody plants; the name refers to the dark head capsule of the larva, a diagnostic trait distinguishing it from related leaf-tying species.

Etymology

From the larva's conspicuous black head capsule combined with 'fireworm,' a traditional name for tortricid caterpillars that damage plants as if scorched by fire.

Example

In Pacific Northwest cranberry bogs, blackheaded fireworm larvae tie together terminal leaves and feed on developing flowers and fruit, requiring targeted insecticide applications during bloom.

Synonyms

• holly tortrix moth
• holly leaf tier

Related Terms

• Tortricidae
• leaf tier
• Rhopobota
• Cranberry fruitworm
• foliage-tying larva
• head capsule

Usage Notes

The common name is used primarily in North American agricultural contexts, particularly for cranberry and blueberry pest management; European literature more often uses 'holly tortrix moth' or 'holly leaf tier.' The larval black head is a key field character separating this species from the similar cranberry girdler (Choristoneura parallela).