Scientifically painted cockroaches and Americas.

# Scientific Painting#Draw a comparison of Blattella germanica and Periplaneta americana. Not many people will spend so much energy on drawing Xiaoqiang.

Although I feel like I’ve said it 10,000 times, I still want to say that German cockroach is not "northern cockroach"! As far as origin is concerned, Blattella germanica is an invasive species from Southeast Asia. It is a cockroach from the South. German cockroaches are distributed globally in both north and south. China’s real northern cockroaches represent the Chinese real soft-shelled turtle and the Hebei soft-shelled turtle, which are completely harmless to human beings.

Periplaneta Americana is an invasive species from Africa. In fact, it does not like to enter the interior. It mainly lives in the periphery of buildings, sewers, garbage cans and other places, so it is relatively rare in the north. The American cockroach is usually knocked in by mistake outside the house, or the house is old and damp inside and outside. Old country houses, farms / greenhouses, and hygiene, but there will be many hotels / workshops with Xiaoqiang Catering Center.

China’s real "southern cockroaches" are not seen by most southern city dwellers now. Like many other protozoan species, they disappear wherever humans develop. Oriental cockroaches are a common species in the South; like the native "northern cockroaches", most of the native "southern cockroaches" are neither close to humans nor harmless to humans.