CRR Golden Beetle Carapace

Golden Tortoise Beetle (Charidotella sexpunctata)
Structural coloration through thin-film interference - no actual gold involved!
Coherence Integration: C(x) = ∫ L(x,τ) dτ
Carapace Evolution: h(x,t) = h₀ + ∇·φ(x,t)
Metallic Interference: I = |r₁ + r₂e^(iδ)|² · K_gold(θ)
Dynamic golden surface with beetle-specific metallic interference patterns.
Biomimetic Note: Golden beetles achieve their metallic luster through microscopic multilayer structures in their cuticle. These create selective wavelength enhancement in the yellow-red spectrum, producing brilliant gold, copper, and bronze hues.
Move mouse to observe golden color shifts with viewing angle changes. Left-click for surface disturbance. Right-click for cuticle enhancement.

About Charidotella sexpunctata

Common Names

Golden Tortoise Beetle, Gold Bug, Goldbug Beetle

Physical Characteristics

This remarkable beetle measures 5-7mm in length and belongs to the leaf beetle family (Chrysomelidae). Its most striking feature is the ability to change color from brilliant metallic gold to dull reddish-brown when disturbed or during mating.

The Science Behind the Gold

The golden coloration is achieved through structural coloration - microscopic multilayer structures in the beetle's transparent cuticle create thin-film interference. By controlling the spacing between these layers with liquid-filled chambers, the beetle can actively change its appearance.

Habitat & Behavior

Found throughout North America, these beetles feed on morning glory and sweet potato plants. The "golden" phase serves as camouflage among golden flowers, while the darker phase may help with thermoregulation or predator avoidance.

Biomimetic Applications

Scientists study these beetles to develop adaptive optical materials, color-changing coatings, and advanced camouflage systems. The CRR simulation above models the dynamic surface properties that enable this remarkable color transformation.

Golden Coloration

CRR Beetle: ACTIVE | Surface: METALLIC | Gold: BRILLIANT
0.04
0.9
0.6

Metallic Colors

0.75
0.45
0.35
0.55
0.25

Carapace Properties

0.65
12
1.4
0.2

Animation Speed

0.05
0.7