Pharma Posted June 8, 2010 Share Posted June 8, 2010 Hi I wonder whether there are photos of the different Gromphadorhina sp. available online. I just could find the one of G. portentosa. And are there original descriptions available (I love these old ink drawings, they say more than photographs) or a listing of the differences as originally stated? I do have pretty much of a difficulty to see the species differences (color excluded!) even though I know them (some) in theory*. A rough sketch indicating exactly the important ones would help me too. * These bumps/dimples, the 'pinched together' pronotum, setae, horn angle etc. but I just can't see it clearly (either I need new glasses, I'm just stupid, or I only have G. portentosa or some kind of hybrids). Grüessli Andreas Quote Link to comment Share on other sites More sharing options...
Allpet Roaches Posted June 9, 2010 Share Posted June 9, 2010 http://blattodea.speciesfile.org/Common/ba...&ImageID=14 You can see differences but the problem is the "species" and "Princisia" are just G. portentosa geographic races with identical genitalia that readily interbreed. Quote Link to comment Share on other sites More sharing options...
Pharma Posted June 9, 2010 Author Share Posted June 9, 2010 Hi Orin That's the one photo I found . I know that P. vanwaerebeki is believed to be a local form of G. portentosa (quod es demonstrandum) but this is not my real issue. Besides, I know that no one could ever find a difference in male genitalia. I wonder whether there are such photos or sketches for the other Gromphadorhina sp. like G. oblongata and G. grandidieri maybe even in direct comparison with G. portentosa. Grüessli Andreas Quote Link to comment Share on other sites More sharing options...
Zephyr Posted June 9, 2010 Share Posted June 9, 2010 I saw a picture of what somebody called "TRUE Gromphadorhina grandidieri." It looked nothing like the ones in culture and looked like a chestnut brown G. portentosa. Quote Link to comment Share on other sites More sharing options...
Pharma Posted June 9, 2010 Author Share Posted June 9, 2010 Every G. grandidieri picture I ever saw looked absolutely the same like G. portentosa on my computer screen, just with that uniform dark brown. I do have some individuals beneath my G. portentosa looking pretty much the same *LOL*. Some say that here in Europe we have the G. portentosa color-morph 'G. grandidieri', the true G. grandidieri (maybe), and G. portentosa 'Black' (and presumably no one who can tell them apart).... it's a mess and that's why I ask for holotype photos and original descriptions with sketches. Or maybe someone skilled will paint me a 'comic' , but black&white please! Uppsss... and I fround the "True" G. grandidieri photos of wild living specimens on the blattodea species file site. Quote Link to comment Share on other sites More sharing options...
Allpet Roaches Posted June 10, 2010 Share Posted June 10, 2010 "True" G. grandidieri You're assuming the taxonomy is based on some ultimate truth when the problem with hisser taxonomy is systemic. I'm sure the tigers can be grandidieri as much as a chestnut brown portentosa. 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.