O Big Tom, don’t you have an easier question? I am entirely unable to give you good advice on a “trap for females”. And I doubt that anybody could be able to do so.
Perhaps try a normal catching device. The licorice are no fast swimmers, you will get a female by time without damaging your fine landscape.
Hehe, it would appear I have the great Peter Finke stumped 🙂
I’ve found that Paros can be surprisingly speedy when they need to be, but will keep trying… just finding them is the most difficult thing at the moment, I haven’t seen any for days.