Kosalya unimaculata, 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 : 551

Kosalya unimaculata sp. nov.

( Figs 1–23 )

Measurements. Body length (from apex of vertex to tip of forewing): male 7.3–9.0 mm (n = 8), female 8.5–11.0 mm (n = 26); forewing length: male 6.2–7.6 mm (n = 8), female 7.2–9.0 mm (n = 26).

Coloration. Color pattern of anterior dorsum and face as in Figs 1–8 . Head and thorax yellowish to reddish brown. Antennae yellowish brown. Eyes brown. Mesonotum with two large black markings between lateral carinae along middle line on anterior and posterior margin, and one smaller black marking outside of each lateral carinae. Tegula reddish brown with black transverse stripe along distal margin. Forewing fuscous, with yellowish brown triangular marking between costal margin and A1. Hindwings brown, veins dark brown. Legs brown. Abdomen ventrally dark brown with two basal segment pale yellowish-brown, dorsally dark brown.

Head and thorax. Ratio width of vertex from base to length in middle line 2.9. Ratio length of frons in middle line to maximum width 1.1, ratio maximum width to width at base 1.5, disc strongly depressed between median and lateral carina. Postclypeus as long as frons in middle line. Rostrum with ratio apical to subapical segment 1.7. Ratio length of pronotum in middle line to length of vertex 1.5. Ratio of mesonotum in middle line to length of pronotum 5.1, to length of pronotum and vertex combined 3.0. Forewing with ratio length to maximum width 2.9. Hindwings with ratio length to maximum width 1.7.

Male genitalia. Anal segment in dorsal view ( Fig. 16 ) with ratio length to maximum width 1.41, apical margin incised in middle, lateral margin with subtriangular processes at very base. Pygofer in lateral view ( Fig. 14 ) with dorsal margin distinctly shorter than ventral margin, anterior margin sinuate, posterior margin slightly convex medially; in ventral view ( Fig. 15 ) with paired medioventral processes, basally separate, apically thumb-like. Genital style longer than wide ( Figs 17, 18 ), with two processes rising from basal third of dorsal margin and directed dorsad, distal two-thirds of dorsal margin rather straight, ventral margin slightly convex, apical margin narrowly rounded; inner and outer surfaces with scattered short setae, basal areas near dorsal margin on both surfaces with some longer setae. Phallobase sheath-shaped, in lateral view ( Fig. 20 ) almost rectangular; in ventral view ( Fig. 21 ) asymmetrical, distally slightly incised in middle, with six teeth-like spines along median longitudinal line, suspensoria rising from the base; in dorsal view ( Fig. 22 ) with three finger-like processes in basal half and one spinous process at each lateral margin. Stem of connective with short membranous section at middle, close to base. Phallic appendages ( Fig. 23 ) slender, tubular, about three times longer than phallobase, apex distinctly shagreen, especially the dorsal surface, left appendage apically obtuse, with large subapical spine beneath apex, right appendage pointed with large apical spine.

Type material. Holotype: 3, China: Guizhou, Jiangkou, Fanjingshan National Natural Reserve, 21–22 Sep. 2011, J.-K Long and Z.-H Fan; paratypes: 3 3, 1 Ƥ, same data as holotype; 4 3, 25 ƤƤ, Bawangling National Natural Reserve, Hainan, China, 28 Apr. 2009, T.-T. He.

Etymology. The species name is derived from the Latin words “ uni ” and “ maculatus ”, referring to the mesonotum with one marking between the tegula and lateral carina.

Distribution. China (Guizhou and Hainan).

Remarks. Kosalya unimaculata is similar to K. dilatata Chen, Yang & Wilson, 1989 but differs from the latter in: mesonotum with a single small dark brown marking between tegula and lateral carina (two small dark brown markings in K. dilatata ); anal segment in dorsal view with lateral margin subangular at very base (rounded at very base in K. dilatata ); apical margin of genital style narrowly rounded (broadly rounded in K. dilatata ); and each side of phallobase with one sharp process (sharp process present only on the left side in K. dilatata ).

Figures

FIGURES 1 – 8. Kosalya unimaculata sp. nov. (1) Male habitus, dorsal view; (2) Male habitus, lateral view; (3) Male, head and thorax, dorsal view; (4) Male, frons and clypeus; (5) Female habitus, dorsal view; (6) Female habitus, lateral view; (7) Female, head and thorax, dorsal view; (8) Female, frons and clypeus.

FIGURES 9 – 23. Kosalya unimaculata sp. nov. (9) Head and thorax, dorsal view; (10) Frons and clypeus; (11) Head, lateral view; (12) Forewing; (13) Hindwing; (14) Male genitalia, lateral view; (15) Male genitalia, ventral view; (16) Anal segment, dorsal view; (17) Right genital style, from inside; (18) Right genital style, from outside; (19) Anal segment, phallus, connective and style, lateral view; (20) Phallobase, right lateral view; (21) Phallobase, ventral view; (22) Phallobase, dorsal view; (23) Apex of phallic appendages, right lateral view. Scale bars: = 1 mm (Figs 9, 11 – 14, 19); 0.5 mm (Figs 10, 15 – 18, 20 – 23).