Review of the Afrotropical genus Dwightla McKamey (Hemiptera: Cicadellidae: Deltocephalinae: Selenocephalini) with description of a new species from Nigeria Author Lu, Lin Author Zhang, Yalin text Zootaxa 2018 2018-01-11 4370 3 267 270 journal article 31028 10.11646/zootaxa.4370.3.4 5d9ff5c2-a9c8-4271-8756-e09e3ed9d955 1175-5326 1145535 B7FD7ADC-CCDA-4332-8D14-88A2323B21B8 Dwightla medleri Lu & Zhang , sp. nov. ( Figs. 1 A –S ) Description. Length (including tegmen). Male: 9.5 mm . FIGURE 1. Dwightla medleri Lu & Zhang. A. male, dorsal view; B. head, dorsal view; C. head, dorsoanterior view; D. face; E. male, lateral view; F-G. connective and aedeagus, ventral and lateral view; H. apex of aedeagus, dorsocaudal view; I. male 2nd abdominal tergite, dorsal view; J-K. male 1 st sternal apodeme, anterior and dorsoanterior view; L. male 2nd sternal apodeme, dorsal view; M-O. male pygofer, lateral, ventral and caudal view; P. subgenital plate and style, dorsal view; Q. fore tibia, dorsal view; R. fore femur, anterior view; S. apex of hind femur. Body light brown ( Fig.1 , A ). Profemur intercalary row (IC) with 7 fine setae; anteroventral setae (AV) row six small stout setae near distal and six long setae near ventral margin, with AV1 present and long distally ( Fig.1 , R); fore tibiae dorsal rows with 1+11 setae ( Fig.1 , Q). Hind femur with apical setal formula 2+2+1 ( Fig.1 , S). Male abdomen. 2nd acrotergite with trunk horizontal; neck slender and shorter than half of trunk width; 2nd tergal apodeme with posterior lobes vestigial ( Fig.1 , I). 1 st sternal apodeme elongate with posterior lobes developed, longer than width, convergent distally in dorsal anterior view ( Fig.1 , J, K); 2nd sternal apodeme with posterior lobes short, triangular in shape ( Fig.1 , L). Male genitalia. Pygofer with dorsal and ventral margin extended posteriorly to apex; pygofer lobe without macrosetae and inner processes ( Fig.1 , M). Style with apical process extended strongly forward, with apex relatively thick ( Fig.1 , P). Connective short, stem shorter than branch, divergent apically ( Fig.1 , F, P). Aedeagus with single shaft and gonopore, and with one pair of subapical long processes and with atrium in posterior view vase-shaped, rounded laterally and evenly straight on lateral margin of shaft apex, preatrium developed, dorsal atrium nearly equal to the length of shaft; gonopore large, apically on ventral side ( Fig.1 , F, G, H). Material examined. Holotype : male, Nigeria , nr. Siluko , NW State , 24-March-1973 , Coll. J.T. Medler. Etymology. The specific epithet “ medleri ” is named in honor of J.T Medler, who collected the type specimen and contributed extensively to taxonomy of the suborder Auchenorrhyncha . Remarks . D. medleri is closely related to D. delongi based on the similar pygofer, which lacks processes but has the caudal portion strongly tapered and attenuate; and the aedeagus, which has a pair of long distal processes. The main differences from D. delongi are: 1) body color light brown (reddish brown in D. delongi ); 2) apex of style relatively thick (relatively thin in D. delongi ); 3) atrium of aedeagus in posterior view vase-shaped, and rounded laterally (nearly straight in D. delongi ); 4) lateral margin of aedeagal apex evenly straight, process with base stout, broad and tapered, apex emarginate (rounded in D. delongi ); 5) lateral processes of aedeagus extended ventrad (extended anterad in D. delongi ); 6) shaft of aedeagus shorter than in D. delongi in lateral view; and 7) aedeagus with paired processes more strongly divergent from shaft in caudal view.