The Insectile and the Deconstruction of the Non/Human demonstrates the foundational but occluded role of the insectile in subject formation, tracking entomological events-such as buzzing, hatching, moulting, etc.-across the archives of psychoanalysis, seventeenth century still life painting, novels from the nineteenth century to the present day, and post-1970s film. The book analyses a phenomenon called entomological fascination, which it defines as the constellation between subjectivity, fascination and the insectile, and is driven by the central dynamic between form and formlessness: entomological fascination comprehends both a resistance to and a fantasy of total form. The investigation turns to Lacanian psychoanalysis-fascination and the insectile are key to Lacan's work-to argue its case, whose ultimate intent is to undertake a broader deconstruction of the so-called human by insisting on its implications in the insectile. Lacan is usually eschewed in posthumanities debates, thereby missing an important resource: the Lacanian archive can be opened up to follow the dimensions of the posthuman in its insectile 'forms'.