Henanocerus Zhang & Wang 2018, gen. nov.
Creators: name: Zhang, Bin
name: Wang, Chin-Fah
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadellidae
Henanocerus

description: Henanocerus gen. nov.
Type species: Henanocerus lineatus sp. nov.
Diagnosis. Medium-sized leafhoppers. Length usually from 5.8 to 6.5 mm.
Coloration. Body generally darkish brown, with black markings on head and thorax (Figs 1-3).
Morphology. Head (Figs 1, 3) slightly wider than pronotum. Crown shagreen, anterior margin convexly rounded, posterior margin parallel to anterior margin. Face (Fig. 4) slightly wider across eyes than long. Ocelli near distal ends of frontal sutures, closer to adjacent eyes than to each other. Frontal sutures slightly arched above antennal ledges. Anteclypeus trapezoidal, slightly projecting beyond genae, expanded apically. Lateral margins of genae almost straight. Antenna short without distal part of flagellum dilatated in male. Lora small, slightly elevated above level of genae. Pronotum (Figs 1, 3) with anterior margin convexly rounded, lateral margins moderately long, posterior margin concave. Scutellum (Figs 1, 3) subtriangular, slightly broader than long, and longer than pronotum. Forewing (Fig. 5) with 4 apical cells and 3 subapical cells, outer subapical cell smallest and closed distally; inner subapical cell longest and open basally. Hind wing (Fig. 6) with four apical closed cells. Hind femoral macrosetae 2+0, hind tibial macrosetae PD 20–23, AD 7, AV 9–10. Hind basitarsus with three platellae on distal transverse row.
Male genitalia. Male valve (Fig. 8) distinctly wider than long, posterior margin with tapered median projection. Pygofer (Fig. 9) elongate and narrow, dorsal apodeme on anterior margin poorly developed with ventral process. Anal collar (Figs 9, 10) well developed with large apically bifucate process on each side. Subgenital plate (Fig. 9) elongate, slightly longer than pygofer, with long fine setae. Style (Fig. 11) long, curved dorsally, apex usually bearing row of fine lateral setae. Connective (Figs 12, 13) T-shaped, caudal half with U-shaped excavation caudally. Aedeagus (Figs 14, 15) elongate, dorsal apodeme developed, aedeagal shaft tubular, recurved dorsally, with pair of lamellate processes at midlength, gonopore situated slightly basad of midlength shaft on ventral surface.
Female genitalia. Female ovipositor (Fig. 16) slightly projecting beyond pygofer. Sternite VII broader than long, caudal margin medially rounded. First valvulae (Fig. 17) with striate sculpturing. Second valvulae (Fig. 18) regularly broadened in lateral view, with prominent teeth, caudoventral margin denticulated.
Distribution. China (Henan province).
Etymology. The generic name refers to Henan province where the type series was collected. The gender of the genus is masculine.
Remarks. The classifcation of Idiocerini is uncertain and controversial. For many years, there has been a lack of global revisions and phylogenetic analyses to resolve relationships among the genera. Considering the above factors, Henanocerus is tentatively placed in the tribe Idiocerini. Henanocerus belongs to the groups of genera with the ventral process of the pygofer. It closely resembles Amritodus but the latter differs in having two closed subapical cells in the forewing, four platellae on the hind basitarsus and longer apodemes on the male pygofer. It also resembles closely subgenus Idiocerus (Nabicerus) in the general shape and markings but differs in having a ventral process of the pygofer, four platellae on the hind basitarsus, the shape of the aedeagus and absence of expanded disc on the male antennal flagellum.
description: Published as part of Zhang, Bin & Wang, Chin-Fah, 2018, Henanocerus lineatus gen. nov. and sp. nov., a new leafhopper feeding on Populus tomentosa Carrière from China (Hemiptera, Cicadellidae), pp. 584-588 in Zootaxa 4442 (4) on pages 584-585, DOI: 10.11646/zootaxa.4442.4.7, http://zenodo.org/record/1304898