Figure 6.9 Thermal melanism in the two-spot ladybird Adalia bipunctata (Coccinellidae).

Note: Average warm-up curve at Ta of 3°C for (a) red and (b) black (melanic) morphs. At time zero, ladybirds were put under the lights (675 Wm~2), and a fan was switched on at the point indicated by the vertical arrow. Temperature excess is given as mean ± SD, with predicted values shown by arrowheads on the right (upper values without wind, lower values with wind). Source: De Jong et al. (1996).

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