Kosemia admirabilis ( Kato, 1927 )

Qi, Shengping, Hayashi, Masami & Wei, Cong, 2015, A review of the cicada genus Kosemia Matsumura (Hemiptera: Cicadidae), Zootaxa 3911 (4), pp. 451-492 : 454-456

Kosemia admirabilis ( Kato, 1927)

Figures 1–4

Melampsalta admirabilis Kato, 1927: 282 .

Leptopsalta admirabilis: Kato, 1928: 186 .

Leptopsalta admirabilis (Kato) var. kishidai Kato, 1932: 395. Leptopsalta kishidai: Kato, 1938a: 28 .

Cicadetta admirabilis: Hayashi, 1984: 67 .

Kosemia admirabilis: Lee, 2008: 458 .

Material examined. 1♂ (Holotype of Melampsalta admirabilis ) ( UMUT), Kwainei, 22-viii-1922, coll., Masayo Kato; 1♂ (Holotype of Leptopsalta admirabilis var. kishidai ) ( UMUT), “North Hamgyong, Kyongwon County” (written in Chinese letters), vii-1931, coll. K. Kishida; 3♂, 1♀ ( NWAFU), Qinghai Prov., Mengda Tianchi National Nature Reserve, 9-viii-2012, coll. Lu Lin & Xue Qingquan.

Additional material examined. 1♂ ( NWAFU), Liaoning Prov., Qianshan Mountain, 11-viii-1957, coll. unknown.

Description. Male. Ground color of body black with silvery pubescence.

Head ( Figs. 1 A–D). Head including eyes about as wide as base of mesonotum. Supra-antennal plates, paramedian posterior margin of vertex, lateral margins of postclypeus, base of lorum, all yellowish brown. Ocelli dark red. Eyes dark brown. Rostrum black; basal joint of rostrum somewhat yellowish brown.

Thorax ( Figs. 1 C–D). Pronotum black with anterior and posterior margins red brown; central longitudinal fascia pale yellowish, widened posteriorly, where it contains two small black spots. Lateral parts of pronotal collar ampliate laterally and slightly straight or rounded; lateral angle well ampliate posterolaterally. Mesonotum black with two central deltoid spots, lateral margins pale yellow. Cruciform elevation light brown.

Wings ( Figs. 1 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 separated when meeting basal cell. Hind wing with a heavy brown infuscation along vein 2A to its distal end and around ambient vein of cubital cell 2 and anal cell 1; plaga on most of 3A and basal part of jugum also infuscated.

Legs ( Fig. 1 G). General color brown or greenish yellow, with silvery pubescence. Fore leg with fasciae on 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 slightly slanted and black, decreasing in size from primary to tertiary spine.

Opercula ( Fig. 1 E). Operculum generally pale yellow or pale ochraceous, slightly black at base, coarsely covered with short silvery pubescence; inner margin obtusely angulated; lateral and posterior margins rounded. Meracanthus small, same color with operculum.

Abdomen ( Figs. 1 A–B, E–F). Abdomen as long as or slightly shorter than head and thorax together. Timbal with three long ribs. Abdominal tergites almost black, furnished with dense, short silvery pubescence; tergites I–II almost black; posterior margins of tergites III–VII and lateral sides of tergite VIII yellowish brown or dark brown. Abdominal sternites fulvous with dense silvery pile, middle part of venter striped with a series of black spots; sternite VIII shorter than 2/3 of sternite VII.

Genitalia ( Figs. 2 A–D). Pygofer black dorsally and posteriorly, dull brownish laterally. Dorsal beak of pygofer moderately long and spine-shaped, narrowly pointed at apex. Upper lobe of pygofer broadly triangular in lateral view, apex obtuse. Basal lobe of pygofer broadly angled in lateral view. Median lobe of uncus small, brownish; apex slightly upswept in lateral view; paramedian area slightly convex in ventral view. Clasper shiny black, moderately elongated, digitate, meeting the other one at base then widely separated anterolaterally; apex obtuse.

Female ( Figs. 3 A–D). Body, especially abdomen, longer than male and conical, with dense silvery pubescence. Pronotum with a central longitudinal fascia widened posteriorly, where it contains one small black spot. Fore wing with veins M and CuA adjacent to one another at basal cell, but not fused as one. Operculum very small, generally pale yellow, coarsely covered with silvery pubescence, posterior margin rounded; meracanthus small and black, broadly triangular. Abdominal tergites black, furnished with dense, short silvery pubescence; tergite IX black dorsally, pale yellow laterally; two stigma on tergite IX black; posterior margin of sternite VII with median incision very deep and broad, deep to about 4/5 the length of sternite VII; a pair of oblique black patches on sternite VII anterolaterally. Dorsal beak of pygofer black and sharp, distinctly reaching beyond anal styles. Ovipositor sheath black, distinctly reaching beyond apex of of dorsal beak. Other morphological characters similar to male.

Measurements. (4♂♂, 1♀), mean (range) (in mm). Body length: male 20.2 (19.7–20.7), female 22; fore wing length: male 24.9 (24.2–26.1), female 25.4; fore wing width: male 8.5 (8.2–8.6), female 8.8; width of head including eyes: male 6.1 (5.9–6.3), female 5.9; pronotum width (including pronotal collar): male 6.8 (6.6–7.0), female 6.5; mesonotum width: male 6.1 (5.9–6.4), female 5.8.

Distribution. China (Hebei, Liaoning, Shaanxi, Gansu, Qinghai, Ningxia), Korea.

Remarks. This species has some pale-colored forms ( Figs. 4 C–D): pale ochraceous central longitudinal stripe on pronotum developed and much widened posteriorly, where it contains a black spot; a pair of stripes and cruciform elevation on mesonotum, forewing veins, legs and venter of body mostly pale ochraceous. In addition, we put the male specimen (pygofer damaged) from Liaoning Province as additional material for this species based on its external morphology. The identity of this specimen needs further investigation when more materials, particularly associated males from the same locality, become available.

This species may be closely allied to K. radiator ( Uhler, 1896) , but can be easily distinguished from that species by the following characteristics: body rather slender and much larger; mesonotum has no markings behind the deltoid spot on each side of disk.

Figures

FIGURE 1. Kosemia admirabilis (Kato, 1927), 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 2. Kosemia admirabilis (Kato, 1927), male. A, C. male genitalia, left lateral view; B, D. male genitalia, ventral view.

FIGURE 3. Kosemia admirabilis (Kato, 1927), female. A. habitus, dorsal view; B. habitus, ventral view; C. female terminalia, left lateral view; D. female terminalia, ventral view.

FIGURE 4. Kosemia admirabilis (Kato, 1927), male. A. habitus (holotype of Melampsalta? admirabilis), dorsal view; B. habitus (holotype of Melampsalta? admirabilis), ventral view; C – D. habitus (holotype of Leptopsalta admirabilis var. kishidai), dorsal (C) and ventral (D) views.