Immature cicada cast skin
Japanese biologists* noted a change in the composition of cicada species in Osaka, Japan. In the 1980s and 90s, many of the previously dominant cicada species declined and were replaced by a single dominant species, Cryptotympana facials. What caused this change in species composition?
A number of environmental variables were studied. One variable, soil hardness, was best correlated with observations. In urban areas, soil is subjected to a variety of activities that…
Source: Living With Insects Blog