sRGB Reflectances from Iberian butterflies

Data on wing reflectance (visible spectrum, mean standard RGB values (243.7= white, to 52= black) from 224 species of butterflies (Lepidoptera, Papilionoidea): 223 from the Iberian Peninsula and one (Cyclyrius webbianus) from the Canary Islands. Average of male and female, sample size as indicated in column n. The data from C. webbianus and Cacyreus marshalli are provided although these species were not included in our analyses of reflectance.

Methods
The data were measured from digital images of set (collection) specimens taken in fixed conditions, with grey (average RGB) values standardized a posteriori to fit the scale white= 243.7= white, to black= 52. The data set includes the mean length of the forewing (mm) and the total areas (mm2) of the fore and hind wings.

本数据集收录了224种蝴蝶（鳞翅目（Lepidoptera）、凤蝶总科（Papilionoidea））的翅可见光光谱反射率数据，其标准化平均RGB值标尺为：243.7对应白色，52对应黑色。其中223种采自伊比利亚半岛，剩余1种（Cyclyrius webbianus）采自加那利群岛。数据取值为雌雄个体的平均值，样本量详见列n。尽管本研究的反射率分析未纳入Cyclyrius webbianus与Cacyreus marshalli，但仍提供了这两个物种的相关数据。

研究方法
本数据集的数据来源于固定拍摄条件下的馆藏标本数码图像，后续对灰色（平均RGB）值进行后验标准化处理，使其符合白色对应243.7、黑色对应52的标尺。数据集同时包含前翅平均长度（单位：mm）以及前、后翅的总面积（单位：mm2）。