Cockroach forewing area and venation variabilities relate

Cockroaches are among the very few organisms allowing study of quantitative changes of intraspecific variability over time. The variability studied here within three Mesozoic and one living species shown independence (R2 = 0.003–0.093) of forewing areas (CVs 10.96–18.02) on number of veins of corresponding individuals (CVs = 6.83–7.80). In contrast, the average number of veins among studied species correlates with the average forewing area (R2 =...