Which of the following features is used to identify a male cockroach from a female cockroach?
Forewings with darker tegmina
Presence of caudal styles
Presence of a boat shaped sternum on the 9th abdominal segment
Presence of anal cerci
Males bear a pair of short, thread like anal styles which are absent in females. Anal/caudal styles arise from 9th abdominal segment in male cockroach.
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