February 19, 2026

Spotted Lanternfly

Author

Ryan Mange

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Date

February 19, 2026

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Spotted Lanternfly Winter Management


The spotted lanternfly (Lycorma delicatula) represents one of the most significant invasive species threats facing Massachusetts today. Early detection and prevention efforts are crucial to protecting our region's agricultural economy, natural ecosystems, and urban forests. This destructive pest has already caused millions of dollars in damage across Pennsylvania and other mid-Atlantic states, making proactive management essential for our communities.

Understanding the Spotted Lanternfly Threat

What Makes Them Dangerous

Spotted lanternflies are voracious feeders that attack over 70 plant species, including:

  • Agricultural crops: Grapes, hops, apples, stone fruits
  • Hardwood trees: Maple, birch, cherry, walnut
  • Ornamental plants: Various landscape species
  • Tree of heaven (Ailanthus altissima): Their preferred host

These insects weaken plants by feeding on their sap and secreting honeydew, which promotes sooty mold growth. Large infestations can kill trees and devastate crops.

Current Status in Western Massachusetts

Isolated detections have occurred throughout the state with growing populations detected in many western MA communities. The Massachusetts Department of Agricultural Resources (MDAR) continues monitoring efforts, but early detection by residents remains the first line of defense.

Scouting for Spotted Lanternflies

Winter Management - Locating and Removing Egg Masses

Egg Mass Identification

Physical Characteristics:

  • Size: Approximately 1 inch long, 0.75 inches wide
  • Appearance: Brownish-gray, mud-like covering
  • Texture: Putty-like coating over organized egg rows

Where to Find Egg Masses

Common Locations:

  • Tree bark (especially smooth-barked species)
  • Outdoor furniture and equipment
  • Vehicles, trailers, and recreational equipment
  • Stone walls and building siding
  • Fence posts and deck railings
  • Any outdoor smooth surface

Search Strategy:

  • Focus on protected areas less exposed to weather
  • Check south-facing surfaces that receive winter sun
  • Examine items that may have traveled from infested areas
  • Look 1-15 feet above ground level

Proper Removal Techniques

What You'll Need:

  • Putty knife or similar scraping tool
  • Plastic bags or containers
  • Rubbing alcohol or hand sanitizer
  • Gloves (optional but recommended)

Step-by-Step Process:

  1. Scrape thoroughly: Use putty knife to scrape entire egg mass into container
  2. Collect completely: Ensure no eggs remain on surface
  3. Destroy immediately:
  • Submerge in rubbing alcohol for 10+ minutes, OR
  • Double-bag and dispose in regular trash
  1. Clean tools: Sanitize scraping tools between locations

Critical Timing:

  • Peak season: October through May
  • Most effective: Late fall through early spring
  • Before hatching: Complete removal before April/May

Prevention and Community Action

Individual Prevention

  • Inspect vehicles before traveling from known infested areas
  • Check outdoor equipment regularly, especially items stored outside
  • Remove tree of heaven from your property (follow proper disposal protocols)
  • Monitor high-risk plants in your landscape

Community Involvement

  • Education: Share information with neighbors and local groups
  • Volunteer scouting: Participate in organized detection efforts
  • Business cooperation: Encourage local businesses to inspect and report
  • Municipal coordination: Work with town officials on management strategies

Conclusion

Western Massachusetts still has the opportunity to reduce spotted lanternfly establishment through vigilant monitoring and rapid response. Every egg mass removed contributes to protecting our region's agricultural heritage, natural resources, and economic vitality.

The key to success lies in community engagement and consistent effort. By learning to identify spotted lanternflies and their egg masses, conducting regular property inspections, and promptly reporting findings, residents across western Massachusetts can serve as an early warning system for this invasive threat.

Remember: early detection and rapid response represent our most effective tools against spotted lanternfly invasion. Your vigilance today protects western Massachusetts' tomorrow.

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By Ryan Mange February 9, 2026
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