Right...So...
I recently went off on a rambling and lovely search of the internet to find out life's answers to pressing questions. In my case, this included the qeustion of what just happened to my cockroach.
I am one of life's happy weirdoes in that instead of stomping on household pests--which down where I live, include American Cockroaches about the size of my thumb--I catch them and keep them in cages as inspiration to a range of bizzare art projects. So far, I've had this habit for almost a year and a half...in fact, my first little darling, a female cockroach by the name of Kafka has been in my care at least that long. (I explain this uncommon lifespan with my lack of knwoledge of how to feed my roaches. Pretty much, I accidentally semi-starved the poor thing for nutrients and she's had long life because of it.)
Currently, I have five roaches all in a little plastic-bottles cage of my own design, with plenty of airholes, lots of paper to hide beneath/eat, and several differnt compartments to live in/lay eggcases in. And until about last week, I carefully controlled the environment so that my only male, Jitterbug, had access to his four lovely friends. (Actually, three. Misa-Misa is underage.) Then my other yougn cockroach, Ravenous underwent the transformation into an adult, and suddenly she had "male prongs" for lack of a better word, on "her" abdomen. Not only this, but Kafka and Mehitabel also seemed to notice and all sorts of undignified canoodling occured.
Jitterbug and Ravenous seem to have some evidence of fighting over the two eligable females in the cage since they've been wing-biting and I'm reasonably sure that they should be getting enough protein otherwise.
My question is, did my darling and nervous Ravenous, the only roach in the cage to enjoy swimming in the waterdish, actually just have a sex change, or do the sexual attributes ("male prongs") of cockroaches only show up once they reach adulthood?