H. nudapenis Zhang & Webb sp. nov. Figs. 1D, 4F–J Description. Body length (including tegmina), male: 4.5–5.5mm. Vertex sordid yellow, anteriorly orange with a small brown spot each side of midline and a faint spot at apex. Face nearly entirely dark brown. Thorax dorsally stramineous to sordid yellow. Thorax and abdomen ventrally brown. Forewing veins dark brown. Male genitalia as in H. pacifica but connective caudal extension straighter and aedeagal shaft without processes. Material examined. Holotype: ♂, Indonesia, Sulawesi Utara, Dumoga-Bone National Park, Clark’s Camp, at light, 1140m., J.H. Martin, iv.1985, RESL-Project Wallace, NHMUK 010591768 (BMNH). Paratype: 1♂, same data as holotype except v.1985, at light (BMNH). Other material. 1♀, same data as holotype; 1♀, same data as holotype except v. 1985; 1? (abdomen missing), Indonesia, Sulawesi Tengah, nr Morowali, Ranu River area, 27.i.-20.iv.1980, M.J.D. Brendell (all BMNH). Etymology. Named H. nudapenis (Latin nuda, without or lacking) referring to the absence of distal processes on the aedeagal shaft. Remarks. This species is similar to H. caudospina collected from the same locality in Sulawesi but lacks a ventral process on the connective caudal extension and the ventral process of the aedeagus is longer. Although the facial marking is almost completely brown in the two males examined compared to only brown dorsally in males of H. caudospina this difference needs to be confirmed by examination of further males as the similarly coloured topotypical females (tentatively identified under the two species) show a little variability in the extremes of facial marking.

Published as part of Xu, Deliang, Webb, Michael D., Shang, Suqin & Zhang, Yalin, 2021, Review of the Pacific leafhopper genus Hecaloidella (Hemiptera: Cicadellidae Deltocephalinae: Selenocephalini) with description of sixteen new species, pp. 381-403 in Zootaxa 4948 (3) on page 389, DOI: 10.11646/zootaxa.4948.3.4, http://zenodo.org/record/4629100