Earwigs In My Roses . Female earwigs usually have straight pincers at the rear end, whilst those of males are curved. Earwigs, which can be up to 14mm long, hide during the day and emerge at night to feed. Earwig Insect Facts Dermaptera AZ Animals from a-z-animals.com The smell of the mixture will attract the earwigs and they'll crawl in and drown. Traps filled with ants so fast there was only room for a few earwigs. Earwigs are one of the few insects where the adults show some parental care, protecting the eggs and nymphs from predators and fungal infections.