Parcoblatta identification

[NitroHydroRay]

I am currently starting a project that will involve collecting all of the species of Parcoblatta, and any tips for preparing my identification skills is greatly appreciated. Are there any good resources for identifying all species of Parcoblatta? I am aware of and have obtained the key from Blatchley, 1920 and the updated key for Florida species. Is there any way to identify the nymphs before adulthood in species that share ecology and size?

 

[Allpet Roaches]

Unless they're identifiable by size and color for the area (say there's only two species, one pale and one dark as nymphs) I don't think there is any chance of telling nymphs apart. Have you had luck catching some species?

 

[NitroHydroRay]

Yes, I've caught one P. pensylvanica (which was easy to tell based on the size and habitat) and one mystery roach, which must be either P. uhleriana or P. virginica, based on where I am in the US.