ClipArt ETC
"Ventral aspect of male cockroach with the wings extended. An imaginary median line has been inserted. A., antennae; E., eye; P.T., prothorax; W1, first pair of wings; W2, second pair of wings; C., cercus; St., style; Co., coxa; Tr., trochanter; F., femur; Ti., tibia; Ta., tarsus." -Thomson, 1916

Cockroach

"Ventral aspect of male cockroach with the wings extended. An imaginary median line has been inserted.…

Common cockroach. a, female; b, male.

Cockroach

Common cockroach. a, female; b, male.

A male cockroach, Periplaneta orientalis.

Male Cockroach

A male cockroach, Periplaneta orientalis.