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Home » Forums » General Discussion

Graphocephala

Besides G. coccinea, there's apparently two other species in my area: teliformis and picta, but I couldn't find any web info on how they differ from coccinea, whose color can be various shades of green or blue. Could I have seen all three species and not realized it? Anyone know how to sort these three out?
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Contributed by Robin McLeod on 20 June, 2005 - 9:15am

Andy Hamilton will know
I doubt he checks the forums, but I'll email him to ask if he'll provide some details for us.
… Troy Bartlett, 21 June, 2005 - 6:28am login or register to post comments

 
Graphocephala spp.
Actually, there are 6 species of red-and-green (or red-and-blue)Graphocephala in the USA and southern Canada. The easiest to differentiate is G. versuta, which has black inscribed lines on the top of the head (hence "Graphocephala", meaning "written-on-head"). The rhododendron leafhopper, G. fennahi, is the only one that feeds on that particular plant; in addition, males have a distinct spine on the terminal segment (you have to lift up the wings to see this). The northeastern G. picta looks very much like G. fennahi (green with the red lines small) but is also somewhat shorter. The remaining 3 species (the widespread G. coccinea and G. teliformis, plus G. constricta from MS, AR and TX) all look much alike, but have somewhat different ranges. For a complete analysis of the fauna, see Entomologische Abhandlungen 49 (nr. 6), pp. 105-111 (December 1985). I still have a couple of dozen reprints if you want one.
… Andy Hamilton, 29 June, 2005 - 1:26pm login or register to post comments

 
Thanks, Andy
I've emailed you a request for a reprint. Hopefully I'll be able to glean some info and add it to the Guide.
… Robin McLeod, 8 July, 2005 - 9:11pm login or register to post comments

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