blatta70 Posted February 1, 2009 Share Posted February 1, 2009 Hello, this is Mark. I am interested to know what the main identifying factors between the roach families Blattidae and Blattellidae are. I know that the oothecas from Blattellids tend to house more eggs and are often larger than those of Blattids but are there any physical characteristics in both adults and nymphs that differentiate the two families? Any input will be appreciated. Thanks, Mark Quote Link to comment Share on other sites More sharing options...
Allpet Roaches Posted February 3, 2009 Share Posted February 3, 2009 It's interesting that the Blattellidae are in the same superfamily as the live bearing species (hissers, Blaberus, Panchlora etc.) while the Blattidae despite similarities are more closely related to cryptocercids and termites. Unfortunately I don't have the answer but I asked Darren from BCG: "the easiest way to distinguish the Blattellidae from the Blattidae are: Underside of middle and hind femora always entirely and similarly spined on both sides (exception the Archiblattinae), pulvilli and arolia usually present. Male: Subgenital plate symmetrical (at most weakly asymmetrical), bearing two widely separated cylindrical styles at the postereolateral margins Female Subgenital plate symmetrical (valvular), bearing a pair of valve, divided by a longitudinal groove." Quote Link to comment Share on other sites More sharing options...
blatta70 Posted February 12, 2009 Author Share Posted February 12, 2009 Hello, this is Mark. I am interested to know what the main identifying factors between the roach families Blattidae and Blattellidae are. I know that the oothecas from Blattellids tend to house more eggs and are often larger than those of Blattids but are there any physical characteristics in both adults and nymphs that differentiate the two families? Any input will be appreciated. Thanks, Mark Thanks Orin. Mark Quote Link to comment Share on other sites More sharing options...
arachyd Posted February 15, 2009 Share Posted February 15, 2009 ""the easiest way to distinguish the Blattellidae from the Blattidae are: Underside of middle and hind femora always entirely and similarly spined on both sides (exception the Archiblattinae), pulvilli and arolia usually present. Male: Subgenital plate symmetrical (at most weakly asymmetrical), bearing two widely separated cylindrical styles at the postereolateral margins Female Subgenital plate symmetrical (valvular), bearing a pair of valve, divided by a longitudinal groove."" Nice, detailed description. Maybe I missed something but which ones were you describing? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.