What structure do Galleria mellonella larvae spin as they move through the comb structure?
Answer
Silken tubes or tunnels
The larval activity leaves behind physical evidence of their movement through the honeycomb structure. Unlike some moth caterpillars that spin full cocoons from which they emerge later, the *Galleria mellonella* larva employs silk differently. Instead of a complete cocoon structure, these larvae are known for spinning protective silken linings that form tubes or tunnels. These corridors facilitate their movement while feeding within the comb, protecting them as they consume the beeswax, honey, and pollen stores that constitute their primary diet.

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