The German cockroach (Blattella germanica) is a small cockroach species about 1.1 to 1.6 cm long. It is tan to almost black in color, with two dark, roughly parallel streaks on the back behind the head. German cockroaches are common domestic pests found worldwide, especially in human buildings like kitchens, restaurants, and hospitals. They are nocturnal omnivorous scavengers attracted to meats, starches, sugars, and fats but may also eat soap and toothpaste. They can transmit pathogens and allergens that may trigger asthma and other health issues.
Here are some key characteristics:
- Size: 12-16 mm (about half an inch)
- Color: light brown or tan with two dark stripes on the thorax
- Habitat: prefer warm, humid indoor places like kitchens and bathrooms
- Behavior: nocturnal, scatter rapidly when exposed to light
- Reproduction: females carry egg cases with about 40 eggs
- Health risks: can carry bacteria like Salmonella and E. coli, contaminating food and utensils
The German cockroach does not fly well despite having wings and tends to scurry and hide in cracks and crevices. It is considered the most troublesome household cockroach species globally.
