S. Mahunka szerk.: Folia Entomologica Hungarica 55. (Budapest, 1994)

Body slim. Vertex conically produced in the midline, shorter than pronotum (Fig. 909). Face (Fig. 910) nearly as long as wide, its transition to vertex broadly angulate (Fig. 919). Fore wing parallel-sided (Fig. 922). All apical cells with separate bases, 2nd apical cell slightly larger than 3rd and 4th each, 1st apical cell about 3 times smaller than 3rd and 4th cells each. Hind wing very broad (Fig. 923) distinctly narrowing toward apex with venation as in Zyginella Low. Genital capsule elongated, strongly flattened dorso-ventrally (Fig. 913). Anal tube very long basally (Figs 913, 915, 925) but only slightly exceeding caudal margin of pygofer. Caudal lobe of pygofer prominent, well separated from its antero-ventral part (Fig. 925). Base of pygofer well sclerotized, dorsal bridge extremely narrow (Fig. 915). On the caudal lobe of pygofer a solid process at its dorso-caudal angle, a few rigid microsetae at caudal margin, some feeble microsetae on disk and a corrugated extension at ventral margin. Antero-ventral part of pygofer bears numerous medium size feble microsetae on disk and a few long stout setae at its caudal extreme; the long setae nearly reaching hind margin of pygofer (Figs 913, 915, 925). Subgenital plate flattened, parallel-sided on most of its length, terminated on very narrow apex (Fig. 924). A sclerotized ridge runs along middle of the broad part of the plate dorsally. Setosity consists of a single macroseta subbasally, two macrosetae subapically, a few feeble microsetae near the end of the broadened part laterally and a group of minute rigid microsetae on ventral side of the narrow apical part (Figs 914, 916, 918). The very termination of the narrow apex broadened, bearing a few setaeless structures that might be campaniform sensillae. Paramere (Fig. 917) with central part longer than cephalic part and setae situated at the base of central part and, following a gap, sparsely distributed on almost whole remaining caudal part. Connective with extremely long manubrium, two well defined arms and a central lobe that is separated by less sclerotized portion from its main body (Fig. 920). Penis with very small atrium and long, narrow dorsal apodeme joining anal tube through additional narrow extension (Fig. 912). Penis stem very long, curved, almost tubular on most of its length, desclerotized terminally and bearing symmetrical lateral subterminal processes (Figs 911,912). Basal abdominal apodemed of male, broad, parallel-sided, widening and angulately terminated apically (Fig. 921). Comparison. The new genus belongs to Platycyba Mats, complex, showing greatest similarity to Thailocyba Mahm. Yangida gen. n. differs from Thailocyba externally by shorter vertex and longer apical cells of fore wing as well as by broad and apically narrowing hind wing. In male genitalia structure it differs from Thailocyba by presence of long extension of dorsal apodeme of penis, long manubrium of connective and its separate central lobe, shorter cephalic part of paramere and its setae nearly reaching apex and by single terminal extension of subgenital plate. Remarks. The name of this genus is established to honour Prof. Yang (Beijing Agricultural University), well known taxonomist on Cicadellidae and some other groups.