Illustration of the procedure for detection of hybrids. A: frequency distributions of scores in reference samples; B: frequency distribution of scores in the combined reference samples, and in a test sample; C: as B, X-axis categories are made absolute. D: as C, cumulative. X-axis: score (A and B) or absolute score (C and D); Y-axis: proportion of the sample.

 
 
  Part of: Cupedo F (2014) Reproductive isolation and intraspecific structure in Alpine populations of Erebia euryale (Esper, 1805) (Lepidoptera, Nymphalidae, Satyrinae). Nota Lepidopterologica 37(1): 19-36. https://doi.org/10.3897/nl.37.7960