Why Butterflies Are Different
Butterfly preservation is taxidermy's unusual cousin. It's not about realism—butterflies are already museum-perfect. It's about conservation, presentation, and celebrating one of nature's most elaborate designs. A pinned butterfly in a dusty box? That's not preservation. A properly spread monarch in a sealed shadow box with archival backing and UV-protective glass? That's art. The difference is technique, materials, and respect for the specimen.
Whether you're preserving your own catch, displaying purchased specimens, or mounting a collection from nature, butterfly preservation requires precision and understanding. This guide walks you through the science, the techniques, and the practical steps to create displays that last for decades.
Understanding Butterfly Structure
Butterflies have delicate anatomy that demands respect during handling and preservation.
Wings: Four wings (two forewings, two hindwings) covered in overlapping scales that create color and pattern. Those scales are fragile. Rough handling or improper humidity causes scales to rub off, dulling color permanently. This is why handling technique matters so much.
Body and antennae: Central body contains flight muscles. Two sensory antennae are the first casualty of careless handling. They're thin and brittle once dried.
Legs: Six legs (some species fold them under the body). They're structurally delicate and easily broken if the specimen is mishandled.
Butterflies are rigid when dry but brittle. A fresh specimen can be positioned and softened through humidification. A dried specimen that's been stored improperly becomes fragile to the point of crumbling. This is why condition assessment is the first step in any preservation project.
Mount Types and Display Options
Shadow Box (Most Popular)
Butterfly spread and pinned on archival board inside a sealed glass box. Background can be simple white, black, or decorative paper. This is the standard for home display and gift presentations.
Cost: $80–$300 depending on rarity and box quality
Lifespan: 20–50 years (with archival materials and no UV exposure)
Best for: Home display, collectible presentations, gifts
What makes it last: Acid-free mounting board, archival pins, UV-protective glass, sealed case. What damages it: Sunlight (fades color), humidity fluctuations (warping and mold), open air (dust and scale loss). A well-sealed shadow box with proper materials will preserve a specimen for generations.
Spreading Board Setup (Professional)
Butterfly positioned on a spreading board using insect pins and paper strips. Used in museums and research collections. This is the classic entomological method.
Cost: $15–$50 (DIY) to $200+ (professional)
Lifespan: 50+ years with proper storage
Best for: Collectors, research, educational displays
Requires specific storage conditions (humidity-controlled entomological cabinet). Not suitable for living rooms because the specimens are exposed and vulnerable to environmental changes. Professional collections use this method because it allows examination and study.
Resin Embedding
Butterfly suspended in clear epoxy or polyurethane resin and hardened. This creates a durable, self-contained display piece that's both protective and contemporary in aesthetic.
Cost: $150–$500
Lifespan: 30+ years
Best for: Modern aesthetic, durable display
Protects specimen from physical damage and humidity. More expensive than shadow boxes. Requires precision casting to avoid air bubbles and ensure proper specimen positioning before the resin hardens. When done well, the result is striking and highly durable.
How to Spread and Mount a Butterfly
Step 1: Specimen Preparation
If you caught the butterfly recently, you can mount it while fresh. If it's dried or purchased, relax it first. Place in a humid chamber (plastic container with moist paper towels, no standing water) for 24–48 hours. This softens the body enough to position without breaking wings. The goal is flexibility without moisture damage.
Warning: Over-humidifying causes mold. Humidity should be 60–70%, not dripping. Check daily and never allow water to pool in the container.
Step 2: Spreading
This is the skilled part of the process. Spreading requires patience and a light touch.
Setup: Use a spreading board—a groove running down the middle with slots for wings on either side. Professional boards are available or can be made from wood and cork.
Process:
- Pin the butterfly's body (thorax) to the board using a steel insect pin
- Use paper strips to gently pin each wing in place
- Wings should be positioned so the hindwings extend forward, overlapped slightly by the forewings
- Antennae and legs positioned downward or folded naturally (depends on species)
- Leave pinned for 5–7 days to dry in this position
Step 3: Hardening and Drying
Once positioned, the butterfly dries into that pose permanently. Keep in a dry, dark space. 5–7 days minimum; 2 weeks is better. Air circulation matters—good airflow prevents mold while allowing even drying. Once hardened, the pose is locked in and cannot be changed.
Step 4: Mounting in Display Case
- Create or obtain an archival-quality shadow box
- Use acid-free mounting board as backing (white, black, or patterned)
- Position the dried butterfly using new archival pins or adhesive dots
- Seal the box with UV-protective glass
- Ensure case is completely sealed to prevent insect intrusion and dust accumulation
Finding Butterfly Specimens
Option 1: Catch Your Own
Where to find them: Gardens, meadows, fields, forests. Spring through fall in most climates. Early morning and late afternoon tend to have more activity.
How to catch: Butterfly net. Gently sweep, guide the butterfly into the net, fold the opening, and carefully place in a container. Use a soft container to avoid wing damage.
Ethical consideration: It's legal to collect most butterflies, but check local regulations. Some species are protected. Don't catch rare or endangered species. Avoid netting from protected areas. Release common species after observing if you're just studying them. Know before you net.
Option 2: Photograph Instead
Mount high-quality prints in shadow boxes alongside archival information. No ethical concerns, and the visual impact is similar. This is an excellent option for rare or protected species.
Option 3: Purchase from Suppliers
Reputable sources: Butterfly farms that raise specimens for display, ethical exotic insect suppliers, museum gift shops (guaranteed archival quality).
Cost: $20–$200+ per specimen depending on rarity.
What to verify: Is the specimen ethically sourced? Farm-raised or wild-caught? Red flags: Extremely cheap prices (may indicate poor quality or unethical sourcing), no sourcing information, fake-looking photos.
Option 4: Estate Collections
Vintage butterfly collections appear at estate sales and antique shops. Older pieces often use improper materials but can be restored. This is a way to preserve historical collections while giving specimens continued care. You may also want to explore our taxidermy overview.
Preservation Techniques
Dry Mounting (Standard)
Butterfly air-dries in spreader, then mounted with pins to archival board. This is the traditional method used for over a century.
Lifespan: 20–50 years with archival materials
Pros: Simple, traditional, looks natural, shows wing detail clearly
Cons: Fragile to physical damage, vulnerable to humidity fluctuations
Resin Embedding
Butterfly suspended in clear epoxy or polyurethane resin and hardened. A modern approach that protects the specimen completely.
Lifespan: 30+ years
Pros: Protects specimen, durable, waterproof, easy to display, contemporary look
Cons: More expensive, can trap air bubbles, requires precision casting
Glycerin & Oil Preservation
Traditional museum technique using glycerin solutions to maintain flexibility. Less commonly used today but still valued for specialized applications.
Lifespan: 50+ years
Pros: Keeps specimen flexible, reduces brittleness
Cons: Labor-intensive, requires sealed jars, rarely used for butterflies due to aesthetic concerns
Butterfly Care and Display
Display location: Inside, away from direct sunlight. UV-protective glass in shadow boxes is essential. Humid environments (bathrooms, basements) cause damage. Climate-controlled living spaces are ideal. 50–60% humidity is perfect—much lower and the specimen becomes brittle, much higher and mold risk increases.
Storage: If storing a collection, use climate-controlled entomological cabinets. Check annually for signs of mold or insect damage. Proper storage infrastructure is key to long-term preservation.
Handling: Do not attempt to clean or touch specimens unnecessarily. Never use water or cleaning solvents. Hands are the enemy of delicate specimens.
Shipping: Wrap in archival tissue inside a rigid box with cushioning. Avoid temperature extremes during transit. Overnight shipping is safer. Insure for the display value.
Beginner-Friendly Species
For first-time mounting, start with hardy, forgiving specimens:
- Common garden butterflies (Swallowtails, Monarchs, Fritillaries)
- Hardy, relatively forgiving to handle
- Good color retention even if slightly aged
- Large enough to spread without difficulty
- Readily available and legal to collect
Avoid as first projects: Tiny butterflies (less than 1 inch wingspan—fragile and hard to handle), iridescent species (Blue butterflies—scales rub easily and color is complex), rare or endangered species (legal and ethical issues), severely damaged specimens (frustrating for learning).
Ideal practice specimen: A fresh common garden butterfly: 2–3 inch wingspan, good color, sturdy body. Monarchs are classic starter species because they're large, common, and forgiving.
FAQ
Can I mount a butterfly I found dead?
Yes, if it's fresh enough. If it's been dead more than a few days and dried twisted, it's harder to straighten. Fresh is better. If completely desiccated, try humid-chamber relaxation—sometimes it works, sometimes wings crack. The sooner you work with a specimen, the better your results.
Is it ethical to kill butterflies for mounting?
Killing rare or endangered species is illegal and unethical. Killing common garden butterflies is generally considered acceptable by naturalists and collectors. Consider: photograph instead, collect only common species, support butterfly farming (farm-raised equals ethical), leave endangered species alone.
How long do butterfly mounts last?
20–50 years with proper archival materials. Without archival-quality backing and sealing, mounts degrade within 5–10 years. UV-protective glass extends lifespan significantly—it's worth the investment.
What's the best way to display?
Inside, away from direct sunlight. UV-protective glass in shadow box is essential. Ideal: climate-controlled space with 50–60% humidity. Avoid extremes of heat, cold, and moisture.
Can I mount a damaged butterfly?
Depends on the damage. Missing wing pieces are permanent and visible. Broken antennae can be replaced with wire or left off. Cracks in the wing membrane are unfixable. Minor scale rubbing can be cosmetic and less noticeable in display.
What's the difference between pinned and shadow box?
Pinned mounts are working collection specimens (research use) and more fragile—exposed to air and dust. Shadow boxes are display-focused and sealed for home display and protection.
How much does a professional mount cost?
$80–$300 for shadow box with common species. Rare butterflies or exotic species: $300–$1,000+. Resin embedding: $200–$800. DIY shadow box with common butterfly: $30–$80 in materials.
Are there legal restrictions?
Yes. Check your local and state regulations. Many areas protect endangered or threatened species. Some national parks prohibit collecting. International collection may fall under CITES regulations. When in doubt, ask your state wildlife agency before collecting.
Related Resources
- What Is Taxidermy? Complete Beginner's Guide
- Taxidermy Supplies Guide: Tools, Materials & Resources
- How Much Does Taxidermy Cost?
- Unique & Unusual Taxidermy Mounts
Butterfly mounting rewards patience and respect for the specimen. Whether you're preserving your own catch or displaying purchased specimens, proper technique and archival materials ensure your collection lasts for decades. Start with common species, invest in quality materials, and approach each specimen with care. The results are rewarding and the knowledge gained builds toward more ambitious projects.