Rhyssa persuasoria  Rhyssa persuasoria, the giant ichneumon (also known as the sabre wasp), is a species belonging to the family Ichneumonidae subfamily Rhyssinae. It is found in most of Europe, in North America, in the Australasian realm, in the Near East, in the Nearctic realm, in North Africa, and in the Indomalayan realm. "Rhyssa persuasoria" (meaning "persuasive burglar") is one of the largest ichneumon wasps in Europe. The length of adults varies from about in males up to in the females, plus about of the ovipositor. They have a thin black body, several whitish spots on the head, thorax, and abdomen and reddish legs. The antennae are long and thin. Females have a long ovipositor, which they use when laying eggs. They can mainly be encountered from July through August, especially in paths and clearings of coniferous forests. Main hosts of "Rhyssa persuasoria " are the larvae of Horntail or Wood Wasps ("Urocerus gigas", Siricidae species, a type of xylophagous sawfly), as well as larvae of Longhorn Beetle ("Spondylis buprestoides", "Monochamus sutor") and Great Capricorn Beetle ("Cerambyx cerdo").