Differences in calling songs between Chorthippus brunneus, C. maritimus, and C. miramae A–D boxplots for the brunneus-like echeme duration (A) for the brunneus-like pulse rate (B) for the maritimus-like echeme duration (C) and the maritimus-like syllable duration (D) medians (dots), first and third quartiles (boxes), the 10th and 90th percentiles (whiskers), and outliers (dots beyond whiskers) are shown E results of Principal Component Analysis based on 5 song characters are shown for PC 1 and PC 2 in C. brunneus (green dots), C. maritimus (red dots), and C. miramae (blue dots) F loadings of different characters to PC 1 and PC 2.