A review of the Oriental grassland leafhopper genus Platyretus Melichar (Hemiptera: Cicadellidae: Deltocephalinae) Author Dai, Wu Author Zhang, Yalin text Zootaxa 2008 1696 37 47 journal article 10.5281/zenodo.180717 6e4675b6-6158-4526-b01d-254844b7008a 1175-5326 180717 Platyretus marginatus Melichar ( Figs 13–19 ) Platyretus marginatus Melichar 1903 : 174 –175. Distant 1908 : 289 –290, Fig. 184. Type Ψ, SRI LANKA [MMB, examined] Color and external characters as in the generic description. Male genitalia : Subgenital plates rather rounded laterally and caudally. Style with slightly curved slender apophysis with hair-like setae basally and stout setae apically, preapical lobe poorly developed. Aedeagus similar to previous species, but apex of shaft, with dorsal acute hook-like projection, in lateral view. Female genitalia : Median lobe of seventh sternite with a strong median concavity. Measurements : Male 6.2–6.6 mm long, 1.6 mm wide across eyes. Female 6.4–6.6 mm long, 1.6 mm wide across eyes. Material examined : SRI LANKA : Type , 1 Ψ, ( MMB ). Other material: SRI LANKA : 1 ɗ, Peradeniya, i.1905 ; 1 ɗ, Kala Olya, xii. 1905 ; 1 Ψ, Central Province, Kandy Distr., Talwatte, 500 m , 3.xi.1995 , M. Shaffer ( BMNH ). Remarks : There are a few specimens from India (Karnataka: 1 ɗ, 1 ɗ, 10 Km SE Magadi, 16.viii.1977 , C.A. Viraktamath; Maharashtra: 1 ɗ, 2 Ψ, Matheran, 915 m , 23.xi.1977 , C.A. Viraktamath (UASB)) that closely resemble specimens of this species from Sri Lanka but have a slightly undulate outer margin of the style apophysis. This species can be recognized from other species of Platyretus by the poorly developed style apophysis.