Cockroach (Morphology, Anatomy) Cockroach are brown or black body animals. Cockroach belong to phylum arthropoda. Cockroach are also bright yellow, red and green coloured are found in tropical region. Size of cockroach 1/4 inch to 3 inchs (0.6 - 7.6 )cm. Nocturnal omnivores. Live in damp palace Morphology Species of cockroach periplaneta Americana. Cockroach of body divisible into three regions head ,thorax and abdomen Entire body is covered by hard chitinous exoskeleton (brown in colour). Exoskeleton has hardened plates called Sclerites. Head is triangular in shape. Head is fusion of 6 segments and so great mobility on all direction. Antenna help in monitoring environment. Head bear mouth parts for biting and chewing. Mouth part consists of labium(lower lip),labrum(upper lip),a pair of mandibles and maxillae. Thorax consists of three parts prothorax ,mesothorax, and metathorax. First pair of wings arise from mesothorax. Second pair of a
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