ナショナルジオグラフィックのインスタグラム(natgeo) - 12月4日 04時12分

@Robert Clark The German Brown Cockiroach is one of the most widely distributed species of cockroach that are a domestic pests, it probably is the most troublesome example.
It is very closely related to the Asian cockroach, and to the casual observer the two appear nearly identical and may be mistaken for each other.
Previously thought to be a native of Europe, the German cockroach later was considered to have emerged from the region of Ethiopia in Northeast Africa but more recent evidence suggests that it actually originated in Southeast Asia. What ever the case, the cockroach's sensitivity to cold might reflect its origin from such warm climates, and its spread as a domestic pest, unable to serving the cold.

German cockroaches are omnivorous scavengers, meaning that they are attracted particularly to meats, starches, and fatty foods. Where there is a shortage of foodstuffs, they may eat household items such as soap, glue and toothpaste. In famine conditions they turn cannibalistic, chewing at each other's wings and legs.

The earliest cockroach-like fossils ("blattopterans" or "roachids") are from the Carboniferous period period 320 million years ago, as are fossil roachoid nymphs. The first fossils of modern cockroaches with internal ovipositors appeared in the early Cretaceous. A recent phylogenetic analysis suggests that cockroaches originated at least in the Jurassic. @thephotosociety @ナショナルジオグラフィック

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