Comparison of nymphs of the Turkestan cockroach, Blatta lateralis, and the oriental cockroach, Blatta orientalis. Note the reddish legs and thorax on the Turkestan cockroach.

Nymphs of the Turkestan and the oriental cockroach look similar. Note the reddish legs and thorax on the Turkestan cockroach, however.; Riverside County, CA Credit: Dong-Hwan Choe, UC Riverside
Comparison of nymphs of the Turkestan cockroach, Blatta lateralis, and the oriental cockroach, Blatta orientalis. Note the reddish legs and thorax on the Turkestan cockroach. Credit: Dong-Hwan Choe, UC Riverside