Hylica paradoxa Stål, 1863, 1908

Tang, Jiu & Zhang, Yalin, 2018, Review of the leafhopper genus Hylica Stål (Hemiptera: Cicadellidae: Hylicinae) with description of one new species, Zootaxa 4388 (4), pp. 526-536 : 528-535

Hylica paradoxa Stål, 1863

( Figs. 1–9 , 19–20 , 32–36 , 43–47 , 55–61 )

Hylica paradoxa Stål, 1863: 593 ; Atkinson, 1885: 112; Distant, 1908: 253; Paiva, 1919: 376; Evans, 1946: 45; Metcalf, 1962: 6.

Hylica paradoxa var. a Stål 1863: 593; Atkinson, 1885: 112; Distant, 1908: 253; Hylica paradoxa var. b Stål 1863: 593; Atkinson, 1885: 112; Distant, 1908: 253.

Length (incl. tegmen): ♂ 6.6–9.8 mm, ♀ 9.7–11.5 mm.

Coloration and morphology. Body with coloration sheeny brown-black. Head in dorsal view with two pairs of angulate marginal projections between eyes and apex; frons ( Fig. 6 ) produced to short, compressed, slightly curved horn at base and furnished in middle with two small tubercles; frons and clypeus area convex. Pronotum ( Fig. 4 ) usually with median longitudinal ridge; middle of anterior margin of pronotum triangularly produced. Scutellum ( Figs. 7, 8 ) divided into three parts: anterior part disklike with two pairs of small tubercles; middle part elevated with center obviously hollowed out and more laterally compressed and elevated on both sides; posterior part lower than middle region, furnished near apex with conical tubercle. Abdomen ( Fig. 9 ) broader than tegmina; strongly depressed and all sternites lateral margins strongly expanded into dentations.

Male genitalia. ( Figs. 32–36 , 43–47 ) Connective ( Figs. 35 , 45 ) Y-shaped, stem longer than arms. Style about 2.0x connective in length. Aedeagus ( Figs. 34, 36 , 43, 44 ) shaft almost straight, more than half of shaft with consecutive wavy wrinkles, gonopore subapical on ventral surface.

Female genitalia. Distal half of second valvula ( Figs. 59, 60 ) about half of total length, apparently broadened; with hardly any teeth on dorsal margin, few small teeth on the apex of ventral margin.

Material examined. 1♂, Vietnam, DiLinh (Djiring), 27.IX-14.X.1960, C. M. Yoshimoto ( NWAFU); 1♀, Viet Nam, 24 Km S of Dilinh ( Djiring ), 1,050m, 29.IV.1960, R. E. Leech, ( BPBM); 1♂, Thailand, Sakon Nakhon, Phu Phan NP Behind Forest Prot, unit Huay Wien Prai , 17°6. 81′N, 104°0.318′E, 318m, Malaise trap, 25.II-3.III.2007 , Sailom Tongboonchai leg., T1693 ( INHS); 1♂, Thailand Chiang Mai, Doi Phahompok NP Headquarter , 19°57.961′N, 99°9.355′E, 569m, Malaise trap, 28.II-7.III.2008 , Seesom. K. leg. T2939 ( INHS); 2♀, Thailand Loei, Kradeung Mountain, 300-500m, 8 Mar. 1948, Chai Narong, LOT 1H30, ( NWAFU); 1♀, Thailand Loei, Phu Ruea NP Sab Nhong Hin, 17°28.772′N, 101°21.303′E, 912m, Litter sample, 5-8.I.2007 , Patikhom Tumtip leg., T1528 ( INHS); 2♀, Thailand: N. Pangma kampon (Pankamoawng) nr. Fang, 450m, Nov. 15,1957, J. L. Gressitt, ( BPBM); 1♀, Laos: Vientiane Prov, Phou Kou Khouei, Ban Van Eue, 15.IV.1965, J. L. Gressitt, ( BPBM); 1♀, Nepal: Banepa environs, E. Kathmandu, 08.V.2000, 27°37′84"N, 85°30′34"E, beating vegetation, 1,474m, Konstantinov. Lingafelter. Volkovitsh, ( NWAFU); 1♀, China: Daluo , Yunnan, 650m, Guangchun Liu and Wanzhi Cai , ( NWAFU).

Remarks. The characters of these specimens conform to the description of the type by Stål (1863). Figure 160 of Distant (1908) also clearly shows that H. paradoxa has a triangularly produced anterior pronotum margin and the abdominal laterotergites are strongly expanded. The female is similar to the male in morphology but the male coloration is usually darker and the process of the male head is always shorter. Both Stål (1863) and Distant (1908) recognized two color varients:

“Var.a: legs sordid stramineous, annulated with fuscous.” “Var.b: legs fuscous-testaceous; femora pale banded.” Based on the specimens examined, the front and middle legs of this species are mostly stramineous-testaceous and annulated with pale or darker ring spots. There is substantial variation among specimens in the details of leg coloration and no evidence that the previously recognized color variants have any taxonomic significance.

Distribution. China (Yunnan), Burma, India (Assam), Viet Nam, Thailand, Laos (Vientiane), Nepal (Bengal, Kathmandu), West Indonesia; Java. The country records from China, Laos, Nepal, Thailand and Vietnam are new.

Figures

FIGURES 1–9. Hylica paradoxa Stål, male: 1. Habitus, dorsal view; 2. Habitus, lateral view; 3. Habitus, ventral view; 4. Head and pronotum, dorsal view; 5. Head and pronotum, lateral view; 6. Face, ventral view; 7. Scutellum, lateral view; 8. Scutellum, dorsal view; 9. Female abdomen, dorsal view.

FIGURES 19–24. 19–20, Hylica paradoxa Stål, female: Habitus, dorsal view. 21–24, Hylica scutealba sp. n., 21–22, female: Habitus, dorsal view; 23–24, male: 23. Head, pronotum and scutellum, dorsal view; 24. Head, pronotum and scutellum, lateral view.

FIGURES 25–36. 25–31, Hylica scutealba sp. n., male: 25. Genital capsule, posterior view; 26. Genital capsule, dorsal view; 27. Pygofer side, lateral view; 28. Sternite VII-VIII, ventral view; 29. Aedeagus, lateral view; 30. Aedeagus, dorsal view; 31. Connective and style, dorsal view. 32–36, Hylica paradoxa Stål, male: 32. Pygofer side, lateral view; 33. Sternite VII-VIII, ventral view; 34. Aedeagus, dorsal view; 35. Connective and style, dorsal view; 36. Aedeagus, connective and style, lateral view.

FIGURES 37–47. 37–42, Hylica scutealba sp. n., male: 37. Genital capsule, dorsal view; 38. Genital capsule, ventral view; 39. Pygofer side, lateral view; 40. Connective and style, ventral view; 41. Aedeagus, ventral view; 42. Aedeagus, connective and style, lateral view. 43–47, Hylica paradoxa Stål, male: 43. Aedeagus, ventral view; 44. Aedeagus, lateral view; 45. Connective and style, ventral view; 46. Genital capsule, dorsal view; 47. Pygofer side, lateral view.

FIGURES 48–61. 48–54, Hylica scutealba sp. n., female: 48. Sternite VI–VII, ventral view; 49. Pygofer, dorsal view; 50. First valvula; 51. Apex of first valvula; 52. Second valvula; 53. Apex of second valvula; 54. Third valvula. 55–61, Hylica paradoxa Stål, female: 55. Sternite VI-VII, ventral view; 56. Pygofer, dorsal view; 57. First valvula; 58. Apex of first valvula; 59. Second valvula; 60. Apex of second valvula; 61. Third valvula.