Blattodea: Blattellidae, Blattella germanica.
These are the most common roaches found in houses and restaurants. Most cockroaches have a flattened, oval shape, spiny legs, and long, filamentous antennae. Immature stages are smaller, have undeveloped wings and resemble the adults. They eat food of all kinds and may hitchhike into the house on egg cartons, soft drink cartons, sacks of potatoes or onions, used furniture or appliances, beer cases, etc. Produce departments, pawn shops, nursing homes and other such places are constantly fighting German roaches (as a general rule) and are notorious for being the source of residential infestations.
The German roach produces more eggs and has more generations per year (three to four) than other roaches, and only a few individuals are needed to develop into troublesome infestations.