Kosemia prominentis ( Lei & Chou, 1997 )

Qi, Shengping, Hayashi, Masami & Wei, Cong, 2015, A review of the cicada genus Kosemia Matsumura (Hemiptera: Cicadidae), Zootaxa 3911 (4), pp. 451-492 : 484-485

Kosemia prominentis ( Lei & Chou, 1997)

Figures 28–29

Leptopsalta prominentis Lei & Chou, 1997: 55 . Kosemia prominentis: Sanborn, 2013: 525 .

Material examined. 1♂ ( NWAFU), Tibet, Yigong, 2300 m, 14-vi-1976, coll. Li Fasheng; 1♂ ( NWAFU), Tibet, Bomi County, 29-v-1983, coll. Li Houhun; 3♂ ( NWAFU), Tibet, Tongmai, 7-vi-1983, coll. Li Houhun; 1♂ ( NWAFU), Shaanxi Prov., Wugong County, viii-1984, coll. unknown.

Description. Male. Small cicadas, body almost black with black brown pubescence and golden short pile.

Head ( Figs. 28 A–D). Head including eyes about as wide as base of mesonotum. paramedian posterior margin of vertex, supra-antennal plates, lateral margins of postclypeus all brown. Eyes grey brown. Ocelli orange-reddish, distance between lateral ocelli distinctly longer than distance between lateral ocellus and front ocellus. Genae and anteclypeus black, with dense, grey brown pubescence. Rostrum black, basal joint of rostrum somewhat brown.

Thorax ( Figs. 28 C–D). Pronotum black with anterior and posterior margin red brown. Lateral part of pronotal collar ampliate laterally and broadly angled; lateral angle well ampliate posterolaterally. Mesonotum black, with two central deltoid spots and lateral margins fuzzy yellowish brown in some specimens. Cruciform elevation yellowish brown.

Wings ( Figs. 28 A–B). Wings hyaline. Fore wing with costal, basal and ulnar veins light brown; anal veins and apical margin dusky; basal membrane sanguineous; veins M and CuA adjacent to one another at basal cell, but not fused as one; veins RA2 and RP fused at base in two specimens. Hind wing with faintly brown infuscation narrowly along vein 2A to its distal end and around ambient vein of cubital cell 2 and anal cell 1; plaga on 3A and basal part of jugum slightly infuscated.

Legs ( Fig. 28 G). General color brown, with long silvery pubescence. Fore leg with fascia of coxa, one or two spot(s) of trochanter, two longitudinal fasciae and tips of femur, tips and longitudinal fasciae of tibiae, all black or black brown. Fore femur with three strong spines beneath all black basally and red brown apically, decreasing in size from primary to tertiary spine; primary and tertiary spines slanted, secondary spine almost erected. Tibiae of mid and hind legs each with an indistinct, light brownish annulate marking at about one-third from base.

Opercula ( Fig. 28 E). Operculum almost brown and slightly fuscous basally, coarsely covered with grey silvery pubescence; inner margin obtusely angulated; lateral and posterior margins rounded. Meracanthus generally pale yellow.

Abdomen ( Figs. 26 A–B, E–F). Abdomen slightly shorter than head and thorax together. Timbal with two long ribs. Abdominal tergites I–II black; posterior margins of tergites III–VII and posterior portion of tergite VIII orange-yellow. Abdominal sternites orange-yellow with silvery pile; middle of sternites III–VI striped with a series of black semicircular spots; sternite VIII shorter than of sternite VII.

Genitalia ( Figs. 29 A–D). Pygofer black dorsally, pale brown laterally. Dorsal beak of pygofer moderately long and spine-shaped, narrowly pointed at apex. Upper lobe of pygofer triangular in lateral view, apex obtuse; basal lobe of pygofer broadly angled in lateral view. Median lobe of uncus small, black, apex slightly upswept in lateral view, paramedian area slightly convex in ventral view. Clasper shiny dark red with black at base, slightly elongated, digitate, and contiguous to the other one at base then separated anterolaterally; apex obtuse.

Measurements. (6♂♂), mean (range) (in mm). Body length: 16.8 (16.0–18.0); fore wing length: 18.5 (17.4–19.4); fore wing width: 6.8 (6.5–7.1); width of head including eyes: 4.8 (4.8–5.0); pronotum width (including pronotal collar): 5.8 (5.4–6.1); mesonotum width: 5.1 (4.8–5.4).

Distribution. China (Shaanxi, Tibet).

Remarks. This species resembles K. yamashitai ( Esaki & Ishihara, 1950) in general appearance, but can be distinguished from the latter by the following characteristics: secondary spine of fore femur almost erected; posterior margins of tergites III–VII and posterior portion of tergite VIII orange-yellow; abdominal sternites orange-yellow, striped with a series of black semicircular spots; sternite VII broad at base and abruptly narrowed at half length; upper lobe of pygofer small, with apex somewhat acute in lateral view.

Figures

FIGURE 26. Type material of Quintilia mogannia Distant, 1905. A. habitus (holotype, male), dorsal view; B. habitus (paratype, female), dorsal view.

FIGURE 28. Kosemia prominentis (Lei & Chou, 1997), male. A. habitus, dorsal view; B. habitus, ventral view; C. head and thorax, dorsal view; D. face; E. thorax and anterior part of abdomen, ventral view; F. timbal, dorsal view; G. left fore leg, showing the spines on fore femur.

FIGURE 29. Kosemia prominentis (Lei & Chou, 1997), male. A, C. male genitalia, left lateral view; B, D. male genitalia, ventral view.