Systematic position of cockroach

•  Phylum : Arthropoda
• Sub phylum : Mandibulata
• Class : Insects
• Subclass : Pterygota
• Division : Exopterygota
• Order : Dictyoptera
• Family : Blattidae
• Genus : Periplaneta
• Species : americana 

Small black cockroach's scientific name - Blatta orientalis