Advertisement Umm well with the pulchra there is an area that everyone looks at called the epigastric furrow. This is a little slit/opening is between the upper pair of book lungs toward the bottom. You can spot it pretty easily. Now with some species (pulchra included) right above that opening there can be a dense patch of hairs in a semi circled shape. This is an indication of a male. Ill try too dig up a photo and show you what I am talking about. But absence of that patch in that same area you could find a slight curtain of downward pointing hairs right on the opening and slightly above. That is an indication of female. That and females epigastric area tends to purse out more away from the abdomen. All of this takes time and practice to spot though so don’t get frustrated if you do not learn over night.