What is the maximum wingspan attributed to adult Greater Wax Moth, Galleria mellonella?
Answer
37 millimeters
The physical distinction between the two major pest species, *Galleria mellonella* and *Achroia grisella*, is clearly defined by their adult dimensions. The Greater Wax Moth (*G. mellonella*) is the larger of the two pests encountered in beekeeping operations. Its adult wingspan is reported to fall within a range extending up to a maximum of 37 millimeters. This measurement contrasts sharply with the maximum wingspan of approximately 14 millimeters seen in the smaller Lesser Wax Moth. This size disparity is linked to several physiological and ecological differences, including the degree of sensory investment, mobility, and the overall scale of destruction wrought upon the wax comb structure.

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