Subject: What kind of wasp is this? Location: Adelaide, South AustraliaDecember 16, 2013 8:28 pmI found this in our backyard and was wondering exactly what it is and is it dangerous. We live in Adelaide, South Australia. Thanks. This is some species of Ichneumon, a large and diverse group of parasitoid wasps that are not considered dangerous to humans. The female uses her ovipositor, which is visible in your photo, to deposit her eggs, often directly into the body of the host insect or arthropod. Most Ichneumons are very host specific, and the prey include many different orders, including butterflies and moths, true bugs and other wasps. We hope to eventually determine a species identification for this unusual Ichneumon.