Megaphragma mymaripenne

Megaphragma mymaripenne is a very small wasp. At 200 μm (.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}1⁄5 mm; 1⁄125 inch) in length, it is the third-smallest extant insect, comparable in size to some single-celled organisms. It has a highly reduced nervous system, containing only 7,400 neurons, several orders of magnitude fewer than in larger insects (for example, a honey bee has about 850,000). This is the smallest number of neurons in all...