Neogergithoides tubercularis, Sun, Yanchun, Meng, Rui & Wang, Yinglun, 2012

Sun, Yanchun, Meng, Rui & Wang, Yinglun, 2012, Neogergithoides, a new genus with a new species from China (Hemiptera: Issidae), Zootaxa 3186, pp. 42-53 : 44-50

Neogergithoides tubercularis , sp. nov.

Description. Length, male (including tegmen): 7.6–8.0 mm, length of tegmen: 5.7–6.2 mm; female (including tegmen): 8.5–9.1 mm, length of tegmen: 6.3–7.0 mm.

Body flavovirens ( Fig. 1 ). Vertex alutaceous, with opalescent big quadrate blotch at middle of apical margin and two small irregular fuscous spots near posterior margin, lateral carinae pale greenish ( Figs. 1, 3 ). Genae and outer sides of head pallide-flavens; small fusco-piceous subtriangular blotch on each side of head before eyes ( Fig. 2 ). Frons fuscescent with base black, median carina and lateral margin pale flavovirens. Clypeus fusco-piceous with a broad stramineous median carina; lateral margin pale flavovirens or sometimes viridescent. Rostrum fuscous ( Fig. 5 ). Antennae fusco-testaceous with a small black spot on preapical surface of second segment. Ocelli testaceous ( Fig. 6 ). Eyes pitchy ( Figs. 2, 3 ). Pronotum yellowish green with two piceous maculae at mid of posterior margin; anterior margin fusco-rufous, posterior margin canescent with some small fuscus spots. Mesonotum testaceous with some black maculae or spots ( Fig. 3 ). Tegmen pale flavovirens, costal margin ivory, with one narrow pitchy stripe from costal margin to outer margin ( Fig. 7 ). Wing fumatus, veins blackish brown ( Fig. 8 ). Leg flavotestaceous with suffusion greenish, hind femora dark fuscescent, fore- and mesofemora with black stripes, fore-, meso- and hind tibiae with black stripes ( Fig. 4 ). Abdomen pale brown, and apex of each segment pale flavovirens.

Vertex with disc depressed, about 0.6 time wider at apex than long in midline, minute transverse wrinkles scattered at disc, median carina complete, lateral margin distinctly carinated ( Fig. 3 ). Frons elevated at disc with median carina, glossy, 2.0 times wider at widest part near apex than at base, 1.8 times longer at midline than broad at widest part. Clypeus distinctly elevated, median carina distinct. Rostrum long, reaching post-trochanters, last segment slightly shorter than penultimate ( Fig. 5 ). Antennae comparatively short, scape annular, pedicel subglobose with numerous tuberculiform sensory pores. Pronotum with numerous pustules or small tubercules along posterior margin. Mesonotum broad, 2.5 times wider at widest part than long at midline, median carina only distinct on anterior half, with some small depressed tubercles ( Fig. 3 ). Tegmen nearly elliptical, 2.2 times longer than broad at widest part, costal margin moderately convex at one third of base; longitudinal veins prominent, with much supernumerary forkings and numerous irregular transverse veinlets ( Fig. 7 ). Wing relatively elongate, about 0.9 time length of tegmen. Spinal formula of posterior leg 6–9–2.

Male genitalia. Anal segment in dorsal view mushroom-shaped, widest near apex, with apical margin slightly convex at middle and lateral margin strongly convex near apex; anal foramen near middle ( Fig. 13 ). Pygofer in lateral view with dorsal margin oblique, ventral margin relatively straight, dorsolateral angles strongly roundly produced caudad, posterior margin moderately concave in basal half and anterior margin slightly concave in dorsal half ( Fig. 12 ). Aedeagus slightly curved downward medially, with a pair of short sword-like processes near middle, dorsal lobe with apical margin strongly convex at middle, two angles rounded; lateral lobes sword-like with apex tapering; ventral lobe lamellate with apical margin nearly straight ( Figs. 14, 15 ). Genital styles ( Fig. 12 ) in profile nearly triangular, apical margin concave, caudo-ventral angle rounded, with one longitudinal carina between dorsal and apical margins, dorsal margin with one large tubercular process at middle. Capitulum of style, in dorsal view, longer than wide, with two obtuse apical processes, and large lateral tooth ( Fig. 9 ).

Female genitalia. Sternite VII with apical margin distinctly convex at middle ( Fig. 22 ). Anal segment in dorsal view oval, with apical margin distinctly produced and lateral margin rounded; anal foramen in basal half ( Fig. 16 ). Gonocoxa VIII nearly quadrilateral ( Fig. 20 ); anterior connective laminae of gonapophysis VIII nearly quadrate, apical margin with 3 nearly parallel teeth, lateral margin with 3 small teeth ( Fig. 20 ); endogonocoxal lobe strongly sclerotized, crescentic in ventral view; endogonocoxal process foliate and membranous. Proximal part of posterior connective lamina of gonapophyses IX slightly convex in lateral view, distal parts of posterior connective laminae of gonapophyses IX arched, lateral fields flat, median field membranous with wide single lobe ( Figs. 18, 19 ); gonospiculum bridge situated at base of gonapophyses IX, apex angled in lateral view ( Fig. 18 ), in dorsal view basal margin angled, apical margin convex and transparent ( Fig. 10 ). Gonoplacs strongly elevated and sclerotized at middle, in dorsal view transparent and membranous at base, fused at base and forked at apical half along dorsal margin ( Fig. 11 ); in profile nearly rectangle, anterior margin membranous and oblique, posterior margin concave at ventral half, dorsal and ventral margins almost straight ( Fig. 17 ).

Bursa copulatrix (BC) membranous with two connected pouches (BC1 & BC2) (bursa copulatrix constricted medially forming two pouches), opening directly into posterior vagina (Vp), first pouch (BC1) orbiculate, wall with visible cells, second one (BC2) saccular and long, without any ornamentation on wall. Vagina much thicker and elongate with posterior and anterior vagina, posterior vagina relatively short. Oviductus communis (OC) slen- der at base, slightly swollen at apex. Spermatheca (Sp) well-developed with five parts: orificium receptaculi (or), ductus receptaculi (dr), diverticulum ductus (dvd), spermathecal pump (spp) and glandula apicalis (ga). Orificium receptaculi correspondingly robust and short. Ductus receptaculi thin and elongate, strongly intumescent and sacculated at middle, with long and smooth ductus at basal and apical part. Diverticulum ductus orbiculate and extending off from tip of ductus receptaculi, followed by spermathecal pump slender and tubular; two glandula apicalis slender at apex of spermathecal pump ( Figs. 21, 23 ).

Material examined. Holotype: male, China, Hainan Province, Diaoluoshan Mountain, 1 June 2007, coll. Yinglun Wang & Qing Zhai. Paratypes: 1 male, China, Hainan Province, Wuzhishan Mountain, 15 May 1963, coll. Io Chou; 1 female, China, Guangxi Zhuang Autonomous Region, Huaping, 7 June 1963, collector unknown. 1 male, 28 March 1964, coll. Sikong Liu; 2 males, 1 May 1965, coll. Sikong Liu; 1 female, 9 May 1984, coll. Youdong Lin; 1 male, 2 females, 29 May 2007, 29 May 2007, coll. Yinglun Wang & Qing Zhai; 2 males, 3 females, 1 June 2007, coll. Yinglun Wang & Qing Zhai; 1 male, 26 May 2008, coll. Qiulei Men; 3 males, 1 female, N18°43.664’, E109°52.704’, 948m, 6 August 2010, coll. Guo Zheng, China, Hainan Province, Diaoluoshan Mountain. 1 male, 1 female, 10 April 1980, coll. Jiang Xiong; 1 female, 23 May 1981, coll. Zhiqing Chen; 1 female, 24 March 1982, coll. same; 1 male, 20 April 1982, coll. same; 1 male, 1 female, 17 May 1984, coll. same; 1 female, 2 December 1981, coll. Maobin Gu; 2 males, 21 April 1983, coll. same; 1 male, 1 female, 15 July 1981, coll. Yuanfu Liu; 1 female, 6 July 1982, coll. Lizhong Hua; 1 male, 28 July 1983, coll. same; 1 male, 15 May 1984, coll. Youdong Lin; 1 male, 3 females, 6 June 2007, coll. Yinglun Wang & Qing Zhai; 41 males, 41 females, N18°44.026’, E108°52.460’, 975m, 15 August 2010, coll. Guo Zheng; 19 males, 14 females, N18°44.727’, E108°59.632’, 235m, 17 August 2010, coll. Guo Zheng; 32 males, 42 females, N18°44.658’, E108°50.435’, 1017m, 18 August 2010, coll. Guo Zheng, China, Hainan Province, Jianfengling Mountain. 1 male, China, Hainan Province, Bawangling Mountain, 28 May 2007, coll. Yinglun Wang & Qing Zhai; 4 females, same, 10 June 2007, coll. same; 1 female, China, Hainan Province, Limuling Mountain, 19 April 2008, coll. Qiulei Men; 48 males, 32 females, China, Hainan Province, Yinggeling Mountain (Yinggezui), N19°02.884’, E109°33.529’, 797m, 20 August 2010, coll. Guo Zheng.

BC1, BC2: two pouches of bursa copulatrix; dr: ductus receptaculi; dvd: diverticulum ductus; ga: glandula apicalis; Gbd: gonospiculum bridge; Gy VIII: gonapophysis VIII; Gy IX: gonapophyses IX; OC: oviductus communis; or: orificium receptaculi; Sp: spermatheca; spp: spermathecal pump; St VII: sternite VII; Va: anterior vagina; Vp: posterior vagina.

Additional material. 3 females, China, Hainan Province, Yinggeling Mountain (Yinggezui), N19°03.047’, E109°33.782’, 678m, 21 August 2010, coll. Guo Zheng.

Distribution. China (Hainan, Guangxi).

Remarks. The new species resembles Gergithoides carinatifrons Schumacher, 1915 ( Figs. 43–45 ), but it can be distinguished by: 1) ocelli present, absent in Gergithoides carinatifrons ; 2) vertex 1.7 times longer than broad, in Gergithoides carinatifrons , 1.2 times longer than wide in midline; 3) frons elevated at disc and smooth, clypeus with distinct median carina, in Gergithoides carinatifrons , frons plain and coarse, with a row of particles along apical margin and lateral margin at apical half, clypeus without median carina; 4) tegmen with a brown stripe along anterior and apical margins, and anterior margin moderately convex at one third of base, Gergithoides carinatifrons without such stripe and anterior margin arc; 5) genital style with one tubercular process at middle of dorsal margin, capitulum of style with two obtuse apical processes, style without any tubercular process and capitulum of style angulate at apex in Gergithoides carinatifrons .

The new species is also similar to Macrodaruma pertinax Fennah, 1978 ( Figs. 37–39 ), but can be separated from the latter by the following characters: 1) vertex more or less hexagonal and slightly produced, vertex of Macrodaruma pertinax longer than broad and strongly produced, tapering and almost awl-shaped; 2) pronotum with median carina, anterior margin not elevated, in Macrodaruma pertinax , median carina absent, and anterior margin foliately elevated; 3) median carina and lateral margins of frons pale brown, and lateral margins elevated, median carina in Macrodaruma pertinax red, and lateral margins not elevated; 4) genital style with one tubercular process at middle of dorsal margin, but Macrodaruma pertinax absent.

Figures

FIGURES 1 – 8 Neogergithoides tubercularis sp. nov. Male 1. holotype, dorsal view; 2. same, lateral view; 3. head and thorax, dorsal view; 4. fore-, meso-, hind legs; 5. frons and clypeus, ventral view; 6. frons and clypeus, lateral view; 7. tegmen; 8. wing. Scale bars = 1 mm.

FIGURES 9 – 20 Neogergithoides tubercularis sp. nov. 9. capitulum, dorsal view; 10. gonaspiculum bridge, dorsal view; 11. gonoplacs, dorsal view; 12. male genitalia, left side; 13. male anal segment, dorsal view; 14. aedeagus, left side; 15. apex of aedeagus, ventral view; 16. female anal segment, dorsal view; 17. gonoplac, right side; 18. gonapophyses IX, right side; 19. gonapophyses IX, dorsal view; 20. gonapophysis VIII, right side. Scale bars = 0.5 mm.

FIGURES 21 – 23 Neogergithoides tubercularis sp. nov. 21. female internal reproductive organs, right side; 22. female genitalia, ventral view; 23. female internal reproductive organs, dorsal view.

FIGURES 37 – 45 37. Macrodaruma pertinax Fennah, female, dorsal view; 38. same, lateral view; 39. same, ventral view; 40. Choutagus longicephalus Zhang, Wang and Che, male, dorsal view; 41. same, lateral view; 42. same, ventral view; 43. Gergithoides carinatifrons Schumacher, male, dorsal view; 44. same, lateral view; 45. same, ventral view. Scale bars = 1 mm