Review of the Pacific leafhopper genus Hecaloidella (Hemiptera: Cicadellidae Deltocephalinae: Selenocephalini) with description of sixteen new species Author Xu, Deliang 0000-0003-0106-5570 Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Entomological Museum, College of Plant Protection, Northwest A & F University, Yangling, Shaanxi 712100, China & 18710305867 @ 163. com; https: // orcid. org / 0000 - 0003 - 0106 - 5570 Author Webb, Michael D. 0000-0002-1312-6142 Department of Life Sciences, Natural History Museum, Cromwell Road, London, ME 15 6 QX, UK & mdwebb 04 @ gmail. com; https: // orcid. org / 0000 - 0002 - 1312 - 6142 mdwebb04@gmail.com Author Shang, Suqin 0000-0001-9376-0735 Biological Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou, Gansu 730070, China & shangsq @ gsau. edu. cn; https: // orcid. org / 0000 - 0001 - 9376 - 0735 shangsq@gsau.edu.cn Author Zhang, Yalin 0000-0002-1204-9181 Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Entomological Museum, College of Plant Protection, Northwest A & F University, Yangling, Shaanxi 712100, China & yalinzh @ nwsuaf. edu. cn; https: // orcid. org / 0000 - 0002 - 1204 - 9181 yalinzh@nwsuaf.edu.cn text Zootaxa 2021 2021-03-22 4948 3 381 403 journal article 7470 10.11646/zootaxa.4948.3.4 6bfd846c-0304-4330-8941-95c406630230 1175-5326 4629100 8E0BF97A-D9E1-4F2E-BB63-82A6ED47E5DC H . singaporensis Zhang & Webb sp. nov. Figs. 1S , 8I–L Description. Body length (including tegmina), male: 4.9–5.1mm ; female: 5.2–5.3mm . Colour as in H . brunnifacialis . Male genitalia similar to H . brunnifacialis . Aedeagus with shaft narrow in lateral view, with a pair of bifurcate widely divergent apical processes and a pair of processes at mid-length of shaft on dorsal surface. Female pregenital sternite with posterior margin conically rounded. Material examined. Holotype : ♂ , Singapore , Baker ( NMNH ) . Paratypes : 1♂ 4♀ 1? (abdomen missing), same data as holotype ( NMNH ) . Etymology. This species is named after the type locality. Remarks. This species is similar to H . brunnifacialis and H . quadripicta but the aedeagal shaft is narrower in lateral view with apical processes bifurcate.