To quote Huffington's post, Periplaneta japonica has special powers: it can withstand the New York winter, outdoors in the freezing cold.
Whilst the subject is still debated, there are some who say that, as any other invasive species, this cockroach should be monitored.
Will competition with other American cockroaches eliminate the new comer? Or will it multiply and thrive as it did in Asia, where this is a common pest?
Only time will tell... and perhaps the horizon scanning function of IBIS will help come up with an answer faster.