Kosalya curvusanusa, Long, Jian-Kun & Chen, Xiang-Sheng, 2013

Long, Jian-Kun & Chen, Xiang-Sheng, 2013, Three new species of the genus Kosalya Distant, 1906 (Hemiptera: Fulgoromorpha: Achilidae) from China, Zootaxa 3683 (5), pp. 549-560 : 556

Kosalya curvusanusa sp. nov.

( Figs 43–64 )

Measurements. Body length (from apex of vertex to tip of forewing): male 7.3 mm (n = 1), female 9.1–9.9 mm (n = 5); forewing length: male 6.1 mm (n = 1), female 7.7–8.4 mm (n = 5).

Coloration. Eyes dark brown. Ocelli yellowish white, surrounded by reddish coloration. Mesonotum with two large dark markings between lateral carinae and two smaller dark markings on each side outside of lateral carinae. Forewings brown. Legs light brown basely. Abdomen ventrally pale brown to dark brown, dorsally dark brown. Other external features resemble Kosalya unimaculata sp. nov. in colouring.

Head and thorax. Ratio width of vertex from base to length in middle line 2.8. Ratio length of frons in middle line to maximum width 1.3, ratio maximum width to width at base 1.4. Ratio length of postclypeus in middle line to length of frons 0.8. Rostrum with ratio apical to subapical segment 1.4. Ratio length of pronotum in middle line to length of vertex 1.2. Ratio length of mesonotum in middle line to length of pronotum 6.5, to length of pronotum and vertex combined 3.5. Forewing with ratio length to maximum width 3.0, Sc + R forking slightly distally of Cu1 fork. Hindwings with ratio length to maximum width 1.9.

Male genitalia. Anal segment in dorsal view ( Fig. 58 ) with ratio length to maximum width 1.6, apical margin incised in middle, lateral margins convex, with small angled processes at base, basal margin concave; apical portion asymmetrical, in lateral view strongly bent ventrad in the middle ( Fig. 56 ). Pygofer in lateral view ( Fig. 56 ) with dorsal margin distinctly shorter than ventral margin, posterior margin sinuate; in ventral view ( Fig. 57 ) medioventral paired processes apically narrowing, slightly rounded at apex. Genital style longer than wide ( Figs 59, 60 ), with two processes rising from angle at basal third of dorsal margin and directed dorsad, outer process with two small processes at apex, ventral margin slightly convex, apical part of style narrowing, apex rounded. Phallobase sheath-shaped, in lateral view ( Fig. 62 ) subrectangular, ventrally with row of seven teeth-like spines, apex dorsally concave; in ventral view ( Fig. 63 ) asymmetrical, distally slightly incised in middle, suspensoria rising from the base, right lobe with spiniform process, directed outwards; in dorsal view ( Fig. 64 ), with two large lobiform processes at middle and base. Stem of connective with short membranous section at middle, close to base. Phallic appendages ( Fig. 61 ) slender, tubular, about three times as long as phallobase, apex distinctly shagreen especially the dorsal surface, left appendage obtuse apically, with large subapical spine beneath apex, right appendage pointed with large apical spine.

Type material. Holotype: 3, China: Shaanxi, Qiangning, Qingmuchuan National Natural Reserve, 18 July 2010, H. Li and Z.-H. Fan; paratypes: 5 ƤƤ, Heihe National Forest Park, Zhouzhi, Shaanxi, China, 9–12 Aug. 2010, Y.-L. Zheng.

Etymology. The species name is derived from the Latin words “ curvus ” and “ anus ”, indicating the distinctly curved anal segment in lateral view.

Distribution. China (Shaanxi).

Remarks. This new species is similar to K. dilatata Chen, Yang & Wilson, 1989 , but differs from the latter in: anal segment in lateral view strongly bent ventrad in the middle (straight in K. dilatata ); anal segment in dorsal view with an asymmetrical apex (symmetrical in K. dilatata ); ventral margin of genital style in lateral view broadly round and the dorsal margin broadly concave near the apex (majority of ventral margin straight and ventral margin slightly concave near the apex in K. dilatata ); right lateral margin of phallobase with one sharp process in ventral view (lacking in K. dilatata ).

Figures

FIGURES 43 – 50. Kosalya curvusanusa sp. nov. (43) Male habitus, dorsal view; (44) Male habitus, lateral view; (45) Male, head and thorax, dorsal view; (46) Male, frons and clypeus; (47) Female habitus, dorsal view; (48) Female habitus, lateral view; (49) Female, head and thorax, dorsal view; (50) Female, frons and clypeus.

FIGURES 51 – 64. Kosalya curvusanusa sp. nov. (51) Head and thorax, dorsal view; (52) Frons and clypeus; (53) Head, lateral view; (54) Forewing; (55) Hindwing; (56) Male genitalia, lateral view; (57) Male genitalia, ventral view; (58) Anal segment, dorsal view; (59) Genital style, dorsal view; (60) Genital style, ventral view; (61) Phallus, connective and style, left lateral view; (62) Phallobase, right lateral view; (63) Phallobase, ventral view; (64) Phallobase, dorsal view. Scale bars: = 0.5 mm (Figs 51 – 53, 56 – 57, 59 – 64); 1 mm (Figs 54 – 55); 0.3 mm (Fig. 58).