Editing Ghost moth (section)

====Lekking====
The ghost swift aggregates in leks in order to attract female mates. Lekking occurs at dusk and typically lasts for 20–30 minutes.<ref name=":1">{{Cite journal|last1=Andersson|first1=S.|last2=Rydell|first2=J.|last3=Svensson|first3=M. G. E.|date=1998-07-22 |title=Light, predation and the lekking behaviour of the ghost swift ''Hepialus humuli'' (L.) (Lepidoptera, Hepialidae)|journal=Proceedings of the Royal Society B: Biological Sciences|volume=265|issue=1403|pages=1345–1351|doi=10.1098/rspb.1998.0440|issn=0962-8452|pmc=1689211}}</ref> During the lekking period, incident light intensities between 10.0 and 2.0 lux have been found to increase the brightness contrast between the background (grass/plants) and male moths' silver/white wings. It is thus believed that the male wing color may have evolved as a secondary adaptation to aid in the moth's visibility.<ref name=":2">{{Cite journal|last=Rydell|first=Jens|date=1998-08-07 |title=Bat defence in lekking ghost swifts (''Hepialus humuli''), a moth without ultrasonic hearing|journal=Proceedings of the Royal Society of London B: Biological Sciences|language=en|volume=265|issue=1404|pages=1373–1376|doi=10.1098/rspb.1998.0444|issn=0962-8452|pmid=9721686|pmc=1689220}}</ref>