A little difficult to tell. If you could get a picture a little lower down and closer to the book lungs then it would be easier to give you a more confident judgment. Based on this image, I can see resemblance of both male and female characteristics, and I don't wanna give you a blind guess lol, but if I had to make a call on this picture alone, I'd say..female? The placement of the book lungs is why I'm leaning female. Also, appears to MAYBE have a spermithicae slit, but I can't tell that for sure. Are you hoping for one or the other (male or female)?