“…These flies express an astounding variety of complex sexual behaviours including the sensual dances of the waltzing blowfly Chrysomya flavifrons (Calliphoridae) (Butterworth et al, 2019), the high-speed courtship flights of the lesser house fly Fannia canicularis (Muscidae) (Land & Collett, 1974) and the flashy mating displays of the satellite fly Phrosinella aurifacies (Sarcophagidae) (Spofford & Kurczewski, 1985). However, one particular genus of muscid flies-Lispe-has taken these sexual innovations to the extreme.Lispe (Diptera: Muscidae) is a cosmopolitan genus of flies, in the tribe Limnophorini, which inhabit open sandy or muddy substrates surrounding puddles, creeks, rivers, lakes and beaches (Fogaça & de Carvalho, 2018;Werner & Pont, 2006;Zhang et al, 2013). The group is characterised by the enlarged facial palps, which have been adapted for sexual signalling in some species .…”