 Recently, new "purring" males of the same species in Hawaii are able to produce a novel auditory sexual signal that can be used to attract females while greatly reducing the likelihood of parasitoid attack from the fly.Some species, such as the ground crickets (Nemobiinae), are wingless; others have small fore wings and no hind wings ("Copholandrevus"), others lack hind wings and have shortened fore wings in females only, while others are macropterous, with the hind wings longer than the fore wings.In "Teleogryllus", the proportion of macropterous individuals varies from very low to 100%.