by Christoph — For the this­tle tor­toise bee­tle, Cas­sida ru­big­i­nosa, bit­ing once into its pre­ferred food is not enough, it takes a sec­ond bite. So, 80 years af­ter the first de­scrip­tion of a bac­te­r­ial sym­biont in C. ru­big­i­nosa by H.-J. Stam­mer, Has­san Salem and his col­leagues took up the thread and stud­ied the sym­biont to more...