Neovizcaya, Liang, 2002

Liang, Ai-Ping, 2002, New taxa of Vizcayinae (Hemiptera: Auchenorrhyncha: Delphacidae), including a remarkable new genus from China, Journal of Natural History 36 (5), pp. 601-616 : 603-609

Neovizcaya gen. nov.

Type species: Neovizcaya sinica sp. nov.

Small, slender, somewhat dorsoventrally ¯attened delphacid.

Head relatively large and ¯at, longer and narrower than pronotum, gradually tapered from base to apex in lateral aspect. Vertex long, medially about 1.63 longer than broad at base, about 1.43 length of pronotum, distinctly extending in front of eyes, broad at base and converging anteriorly, apex somewhat broad, posterior margin nearly straight, lateral margins laminately carinate and gradually converging from base to apex and diverging at mid-length to lateral margins of frons, disk of vertex much depressed, sloping to apex, with an indistinct`Y’ -shaped ridge on posterior half. Frons large, smooth, apex rounded in ventral aspect, gradually broadened from upper to lower part, widest slightly above frontoclypeal suture, about 1.43 higher than maximum width, upper part much depressed, lower part distinctly convex, lateral margins carinate, without medial longitudinal carina. Postclypeus much narrower than frons, convex and smooth, lateral margins slightly carinate, without medial carina. Anteclypeus convex, without lateral and medial carinae. Rostrum long, reaching beyond hind trochanters. Compound eyes in lateral view elongate, kidney-shaped, distinctly incised medially above antennal base from inferior margin to about one-half height of eye. Antennae relatively long (but much shorter in comparison with Vizcaya ) with apex of 2nd segment reaching only base of forewings in respose; 1st segment shorter than median length of vertex, depressed, distinctly concave on inner side; 2nd segment terete, about 1.7±1.8 3 longer than 1st, with more than 20 sensory ®leds irregularly distributed over distal surface; both 1st and 2nd segments with numerous sturdy bristles on surface. Pronotum relatively large, shorter than head, distinctly separated from head; disk convex, strongly tricarinate, anterior margin nearly straight, posterior margin angularly incurved; strongly sloping laterad and curved down, extreme lateral areas strongly foliaceous and somewhat reēxed. Mesonotum with anterior margin projected under posterior margin of pronotum, disk relatively ¯at and strongly tricarinate, sloping laterad, caudal tip concave and faintly transversely striate basally. Forewings (®gure 36) elongate, nearly parallel-sided, surpassing abdomen by about one-third of total length and 3.93 longer than maximum width, widest slightly distad of nodal line, narrowest at basal one-third; veins prominent and thickly covered with granules each with a long seta; costal membrane without transverse veins, Sc and R and Cu1a and Cu1b branching near mid-length of wing with outer and inner anteapical cells relatively large; subapical transverse nodal line relatively straight. Hindwings wider than forewings, venation as in ®gure 39. Legs moderately elongate and slender, fore and middle coxae long, smooth and somewhat concave in ventral view, fore femora and tibiae normal, not foliaceously dilated; hind tibiae with two lateral teeth, the basal one near the base, very small and indistinct, the distal one beyond the middle prominent, metatibial spur conical, with ®ve teeth (including apical tooth) on inner margin (®gures 20, 31), metatarsomere I long, about 1.13 longer than metatarsomere s II1 III, black-tippe d spines at end of hind tibiae and metatarsomeres I and II numbering 5, 5 and 4, respectively; pretarsus with one long seta on each unguis and one pair of relatively long setae on arolium (®gure 22).

Drumming organ sexually dimorphic: in females as in Vizcaya ; in males second abdominal tergite dilated, convex, with a shallow oval depression centrally (arrowed in ®gure 19); metapostnotum with a pair of very slender apodemes directed caudad; 2nd abdominal sternite with a pair of elongate apodemes directed dorsocaudad (®gure 34).

Male genitalia with pygofer (®gures 32, 38) in lateral view trapezoid, in caudal view circular, ventrally about 1.33 longer than dorsally, laterodorsal edges strongly produced caudad in lateral view, without teeth on dorsal margin, laterocaudal margins broadly rounded to diaphragm, median processes on ventrocaudal margin small, acute, widely separated; ventral angles of pygofer acute, tooth-like in lateral view, distance between ventral angles great; anal tube short and broad, lateroapical angles produced into short, ventrally directed process. Anal style small and short. Parameres (®gure 35) in ventral view arched, basally expanded and broad in inner side, gradually tapering to apex, apex with a very small laterally recurving hooked barb, nearly beak-shaped in lateral view. Aedeagus (®gure 33) with shaft elongate, slender, slightly depressed ventrodorsally, gradually tapered from base to apex, with one elongate, sinuate process directed ventrally and two relatively short and acute spinose processes apically on right side, and one short and acute spinose process subapically on left side.

Female genitalia as in ®gure 37. Eggs (®gure 21) much smaller than those of Vizcaya with distinct ring-like hatching cap at apexÐAsche (1990: 175) reported that no ring-like hatching cap was seen in the eggs of Vizcaya .

Etymology. The generic name is derived from Greek neo-, new, and the existing genus name Vizcaya . Gender: feminine.

Included species and distribution. One species; south-west China (Yunnan).