Kosemia phaea ( Chou & Lei, 1997 )

Qi, Shengping, Hayashi, Masami & Wei, Cong, 2015, A review of the cicada genus Kosemia Matsumura (Hemiptera: Cicadidae), Zootaxa 3911 (4), pp. 451-492 : 486-488

Kosemia phaea ( Chou & Lei, 1997)

Figures 30–31

Leptopsalta phaea Chou & Lei, 1997: 56 . Kosemia phaea: Sanborn, 2013: 525 .

Material examined. 1♂ ( NWAFU), Yunnan Prov., Lanping County, 2650 m, 15-vi-1979, coll. Lanping Group; 1♂ ( NWAFU), Yunnan Prov., Lanping County, 2500 m, 22-vi-1979, coll. Lanping Group.

Description of male. Small cicadas, body black with greyish pubescence and golden short pile.

Head ( Figs. 30 A–D). Head including eyes slightly narrower than base of mesonotum. Paramedian posterior margin of vertex, supra-antennal plates, apex and lateral margins of postclypeus all dull brown. Ocelli dark red. Eyes grey brown. Gena and anteclypeus black, with dense, grey brown pubescence. Rostrum black, with basal joint of rostrum brown.

Thorax ( Figs. 30 C–D). Pronotum black with anterior and posterior margin red brown; a reversed Y-shaped elevation brown or fuzzy fuscous; lateral part of pronotal collar slightly ampliate laterally and somewhat rounded; lateral angle well ampliate posterolaterally. Mesonotum black with two central deltoid spots, lateral margin fuzzy brown or entirely black. Cruciform elevation pale brown.

Wings ( Figs. 30 A–B). Wings hyaline. Fore wing with costal, basal and ulnar veins light brown; anal veins and apical margin black brown; basal membrane pale sanguineous; veins M and CuA adjacent to one another at basal cell, but not fused as one. Hind wing with heavy 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 infuscated.

Legs ( Fig. 30 G). Reddish brown, with dense, short golden setae. Fore leg with greater part 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 slanted, black basally and red brown apically, decreasing in size from primary to tertiary spine; an additional tiny spine present near the tertiary spine. Tibiae of middle and hind legs each with an indistinct, yellowish brown annulated marking at about one-third from base.

Opercula ( Fig. 30 E). Operculum generally rounded, almost dark brown, black at base, coarsely covered with grey silvery pubescence. Meracanthus dark brown.

Abdomen ( Figs. 30 A–B, E–F). Abdomen about as long as 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 with reddish orange. Abdominal sternites reddish orange with silvery pile, sternites III–VI striped with a series of median, black semicircular spots, diminishing in size posteriorly; median length of sternite VIII about as long as or slightly shorter than of sternite VII.

Genitalia ( Figs. 31 A–D). Pygofer black dorsally, golden brown laterally. Dorsal beak of pygofer fairly short and broad at base, pointed at apex. Upper lobe of pygofer broadly triangular in lateral view, apex obtuse; basal lobe of pygofer slightly angled in lateral view. Median lobe of uncus small, black; apex slightly upswept in lateral view, whilst paramedian area slightly convex in ventral view. Clasper shiny dark red, moderately elongated, digitate, meeting the other one at base then strongly separated anterolaterally; apex obtuse.

Measurements. (2♂♂), mean (range) (in mm). Body length: 16.1 (15.1–17.2); fore wing length: 16.9 (16.7–17.1); fore wing width: 6.2 (6.1–6.3); width of head including eyes: 4.4 (4.2–4.6); pronotum width (including pronotal collar): 5.4 (5.1–5.7); mesonotum width: 4.8 (4.5–5.1).

Distribution. China (Yunnan).

Remarks. This species is closely allied to the K. prominentis ( Lei & Chou, 1997) . However, it can be distinguished from the latter by the following characteristics: postclypeus black with a tawny or reddish brown patch apically; sternite VII smoothly narrowing caudally; upper lobe of pygofer large, with apex broadly rounded in lateral view.

Figures

FIGURE 30. Kosemia phaea (Chou & Lei, 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 31. Kosemia phaea (Chou & Lei, 1997), male. A, C. male genitalia, left lateral view; B, D. male genitalia, ventral view.