Kosemia chinensis (Distant, 1905) Distant, 1905

Qi, Shengping, Hayashi, Masami & Wei, Cong, 2015, A review of the cicada genus Kosemia Matsumura (Hemiptera: Cicadidae), Zootaxa 3911 (4), pp. 451-492 : 475-479

Kosemia chinensis (Distant, 1905) , comb. n.

Figures 20–22

Tibicina chinensis Distant, 1905: 23 .

Cicadetta chinensis (Distant) : Boulard, 1977: 565. Melampsalta bifuscata Liu, 1940:110 , syn. n. Leptopsalta bifuscata (Liu) : Chou et al., 1997: 49. Kosemia bifuscata (Liu) : Sanborn, 2013: 524.

Material examined. 1♀ (Lectotype, here designated), Type (in a red circle), China 94-156 (Ta-chien-lu; Sichuan, Kangding), Tibicina chinensis Dist. type (handwriting), cotype ♀/ Cicadetta chinensis (Distant) / Michel Boulard det. 1976, BMNH (E) #909420; 1♀ (Paralectotype), same data as lectotype, BMNH (E) #909419; 1♂, 1♀ ( NWAFU), Sichuan Prov., Wolong National Nature Reserve, 1856m, 26-vii-1981, coll. Wu Jianguo.

Description. Male. Body almost black with reddish brown or testaceous red markings, furnished with thick, silvery pile.

Head ( Figs. 20 A–D). Head including eyes slightly narrower than base of mesonotum; vertex black with grey scattered pile, posterior margin of vertex dull ochraceous. Ocelli dark red. Eyes dark brown. Postclypeus black with testaceous laterally; transverse grooves of postclypeus and anteclypeus black with grey scattered pile. Genae and lora black with dense, long silvery pile. Rostrum black.

Thorax ( Figs. 20 C–D). Almost black. Anterior and posterior margins of pronotum narrowly dark reddish. Lateral part of pronotal collar ampliate laterally and slightly angled. Mesonotum black with two discal spots and cruciform elevation (excluding centre) dull ochraceous.

Wings ( Figs. 20 A–B). Fore wing with costal, basal and ulnar veins testaceous; veins M and CuA meeting basal cell with their stems completely fused; transverse veins at base of second and third apical cells slightly infuscated; basal membrane testaceous. Hind wing plaga brown, broad along veins 2A and 3A to its distal end and inner margin of anal lobe; ambient vein of cubital cell 2 and anal cell 1 infuscated.

Legs ( Fig. 20 G). General color black with dense, short silvery pile. Longitudinal fascia to femur, apical area of tibiae and apex of coxa, all testaceous. Fore femur with three strong spines beneath all slightly slanted and reddish brown, decreasing in size from primary to tertiary spine; a tiny spine divided from tertiary spine.

Opercula ( Fig. 20 E). Operculum rounded and not extending to posterior margin of tympanal cavity, generally dark red or testaceous, black at base, coarsely covered with greyish pile. Meracanthus black.

Abdomen ( Figs. 20 A–B, E–F). Abdomen longer than head plus thorax. Timbal with three long ribs. Abdominal tergites and sternites black with posterior segmental margins narrowly testaceous red. Abdominal sternite VII tapering caudally, posterior margin rounded; sternite VIII dark reddish, slightly shorter than sternite VII, hind margin rounded.

Genitalia ( Figs. 21 A–D). Pygofer almost black, furnished with short silvery pile. Dorsal beak of pygofer moderately long, spine-shaped, narrowly pointed at apex. Upper lobe of pygofer slightly acute in lateral view, apex obtuse; basal lobe of pygofer tending to be broadly angled in lateral view. Median lobe of uncus small, apex somewhat upswept in lateral view, paramedian area slightly convex in ventral view. Clasper moderately elongated, digitate, meeting the other one at base then separated and strongly curving anterolaterally, with a tiny spine at median part of inner margin; apex obtuse.

Female ( Figs. 22 A–H). Female longer than male. Supra-antennal plates testaceous. Central longitudinal fascia of pronotum, two deltoid spots of mesonotum and cruciform elevation dull ochraceous ( Fig. 22 C) or yellowish ( Figs. 22 A, F). Central longitudinal fascia of pronotum with posterior margin not ampliate ( Fig. 22 A) or widened posteriorly but contains one small black spot ( Figs. 22 C, F). Veins M and CuA of fore wing contiguous at basal cell but not fused ( Figs. 22 A, C, E, F), transverse veins at base of second and third apical cells slightly infuscated ( Figs. 22 A, F) or not ( Fig. 22 C). Operculum very small, testaceous ( Fig. 22 B) or dark reddish ( Figs. 22 D, E), black at base, posterior margin rounded. Meracanthus broadly triangular, very small, apex pointed. Abdominal tergites almost black, with posterior margins narrowly testaceous, furnished with dense, short silvery pubescence; tergite IX ( Fig. 22 G) black dorsally, whilst testaceous laterally. Abdominal sternites black with posterior margins of sternites III–VI testaceous red ( Figs. 22 A, F) or dark reddish ( Fig. 22 C), furnished with dense, silvery pubescence; posterior margin of sternite VII with median incision very deep and broad, deep to about 4/5 the length of sternite VII ( Fig. 22 H). Dorsal beak of pygofer ( Fig. 22 G) sharply pointed at apex, distinctly reaching beyond anal styles. Ovipositor sheath ( Figs. 22 G, H) dark-reddish, slightly protruding beyond apex of dorsal beak. Other morphological characters similar to male.

Measurements. (1♂, 1♀) (in mm). Body length: male 22.4, female 27.0; fore wing length: male 24.7, female 27.1; fore wing width: male 8.2, female 9.7; width of head including eyes: male 6.1, female 7.1; pronotum width (including pronotal collar): male 7.8, female 9.2; mesonotum width: male 6.3, female 7.9.

Distribution. China (Hebei, Hubei, Sichuan).

Remarks. The species C. chinensis was described by Distant (1905) based on two females ( Figs. 22 A–D) from Kangding (Ta-chien-lu), Sichuan Province, China. However, examination of the type specimens of this species deposited in BMNH revealed that this species should be a member of Kosemia . In addition, Kosemia bifuscata ( Liu, 1940) (transferred from Leptopsalta by Sanborn (2013)) is proposed here as a junior synonym of K. chinensis comb. n., based on their morphology and the same type locality. As mentioned above, we herein designate a female specimen (syntype in BMNH) ( Figs. 22 A–B) as the lectotype and the other one also deposited in BMNH as the paralectotype ( Figs. 22 C–D) of K. chinensis . In addition, we redescribe this species based on the male ( Figs. 20 , 21 ) for the first time.

This species can be easily distinguished from the other species of Kosemia by the following characteristics of males: lateral part of pronotal collar obviously ampliate laterally and slightly angled; fore wing with an infuscation at bases of the second and third apical cells, respectively; abdominal sternites almost black with posterior margins narrowly testaceous red; male clasper with a tiny spine at the median part of inner margin.

Figures

FIGURE 20. Kosemia chinensis (Distant, 1905) comb. n., 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 21. Kosemia chinensis (Distant, 1905) comb. n., male. A, C. male genitalia, left lateral view; B, D. male genitalia, ventral view.

FIGURE 22. Kosemia chinensis (Distant, 1905) comb. n., female. A, B. Lectotype of Tibicina chinensis Distant, 1905, in dorsal (A) and ventral (B) views; C, D. paralectotype of Tibicina chinensis Distant, 1905, in dorsal (C) and ventral (D) views; E. habitus of female from Sichuan Province, ventral view; F. habitus, dorsal view; G. female terminalia, left lateral view; H. female terminalia, ventral view.