Gergithus nonomaculatus, Meng, Rui & Wang, Yinglun, 2012

Meng, Rui & Wang, Yinglun, 2012, Two new species of the genus Gergithus Stål (Hemiptera: Fulgoromorpha: Issidae) from China, with a redescription of G. bimaculatus Zhang and Che, and G. tessellatus Matsumura, Zootaxa 3247, pp. 1-18: 5-8

publication ID

http://doi.org/ 10.5281/zenodo.211928

publication LSID

lsid:zoobank.org:pub:919A4D55-16C6-456B-AEB5-7B0FCDCDD3B7

persistent identifier

http://treatment.plazi.org/id/5B0687DD-2641-4D08-E392-E16AFB1B3BF9

treatment provided by

Plazi

scientific name

Gergithus nonomaculatus
status

sp. nov.

Gergithus nonomaculatus   , sp. nov.

( Figs. 1–18 View FIGURES 1 – 6 View FIGURES 7 – 18 , 39, 41 View FIGURES 39, 41 )

Description: Male length (N= 2) (including tegmina): 5.9–6.3 mm, length of tegmen: 5.4–5.8 mm; female length (N= 6) (including tegmina): 6.0–6.9 mm, length of tegmen: 5.6–6.5 mm.

Colouration: Body black. Vertex yellow ( Fig. 1, 3 View FIGURES 1 – 6 ). Eyes gray. Frons fuscous with yellow fascia near apex, and black fascia on frontoclypeal suture ( Fig. 4 View FIGURES 1 – 6 ). Clypeus fuscous with two yellow small spots on side of base. Rostrum pitchy, apical segment black. Antenna black. Pronotum black, median area fuscous. Mesonotum black with two large yellow lateral spots ( Fig. 3 View FIGURES 1 – 6 ). Tegmen dark brown with 9 yellow spots arranged 1, 2, 1, 2, 1, 2 from base to apex of tegmen ( Figs. 2, 5 View FIGURES 1 – 6 ). Wing cinereous, veins fuscous ( Fig. 6 View FIGURES 1 – 6 ). Legs and abdomen pale brown, apex of fore femora and mid femora dark brown, fore tibiae and mid tibiae black, apices of teeth of hind legs black.

Head and thorax: Vertex broad, nearly rectangular, three times wider than long in middle line, disc distinctly impressed ( Figs. 1, 3 View FIGURES 1 – 6 ). Frons convex, almost as long as wide, the widest part about 1.8 times wider than basal part ( Fig. 4 View FIGURES 1 – 6 ). Frontoclypeal suture approximately straight. Clypeus relatively broad and flat. Rostrum attaining post-trochanters. Anterior margin of pronotum slightly produced between eyes, with small pit near midline on each side. Mesonotum triangular, 1.7 times wider at widest part than medial length, each yellow spot with pit ( Fig. 3 View FIGURES 1 – 6 ). Tegmen oval and reticulate with numerous punctures, 1.6 times longer than wide ( Figs. 2, 5 View FIGURES 1 – 6 ). Wing 0.9 times tegmen length ( Fig. 6 View FIGURES 1 – 6 ). Spinal formula of hind leg 7–8 (9)– 2.

Male genitalia: Anal tube large, base narrower than apex in dorsal view, apical margin with 2 obtuse angleshaped prominences on both sides ( Fig. 7 View FIGURES 7 – 18 ). Anal column short (about 0.3 times as long as anal tube). Suspensorium wide, S-shaped in lateral view ( Fig. 17 View FIGURES 7 – 18 ). Pygofer with strongly convex hind margin ( Fig. 18 View FIGURES 7 – 18 ). Connective slender ( Fig. 17 View FIGURES 7 – 18 ). Aedeagus U-shaped in lateral view, each side of base with hook-shaped process strongly curved and apex directed ventrally ( Figs. 16, 17 View FIGURES 7 – 18 ). Phallobase with dorso-lateral and ventral lobes. Each dorso-lateral lobe of phallobase with bifurcate apical spinous process with long upper branch directed dorsally and shorter lower branch directed apically. Ventral phallobase lobe apical margin slightly arched, shorter than dorsolateral phallobase lobes. Genital style with strongly concave hind margin, caudo-ventral angle widely rounded ( Fig. 18 View FIGURES 7 – 18 ). Capitulum of style flat in dorsal view, apex convex, with large lateral tooth apex directed ventrally ( Fig. 8 View FIGURES 7 – 18 ).

Female genitalia: Sternum VII with middle of posterior margin clearly convex ( Fig. 39 View FIGURES 39, 41 ). Anal tube nearly ovate in dorsal view, base wider than apex ( Fig. 10 View FIGURES 7 – 18 ). Anal column short (about 0.3 times as long as anal tube). Gonoplac slightly prominent in median area, border between first and second gonoplac lobes obsolete, third gonoplac lobes faintly sclerotized and pigmented, fork indistinct in dorsal view ( Figs. 9, 15 View FIGURES 7 – 18 ). Proximal part of posterior connective lamina of gonapophyses IX convex in lateral view, distal parts of posterior connective laminae with prominent horn in dorsal view, median field with shallow notch in apical part, lateral fields projecting to form semicircular appendages in dorsal view ( Figs. 11, 12 View FIGURES 7 – 18 ). Gonocoxa VIII nearly rectangular, dorsal margin slightly protruding in proximal part. Endogonocoxal process sharply narrowed to apex. Anterior connective lamina of gonapophysis VIII with rod-like appendage at ventral margin of base, and apical group of anterior connective lamina with three teeth, lateral group with three keeled teeth ( Figs. 13, 14 View FIGURES 7 – 18 ).

Female reproductive organs: Bursa copulatrix with moderately short and thick ductus at basal half and round pouch at apical half, ductus generally membranous and wrinkled, wall of pouch with weakly visible cells and very small centrally sculptured ornamentation. Junction of vagina and bursa copulatrix with large sclerotized plate. Posterior vagina short and anterior vagina relatively long, apical part of anterior vagina expanded. Oviductus communis opening into antero-ventral wall of anterior vagina, with very thin and short ductus. Spermatheca opened into apical wall of anterior vagina and well-developed, ductus receptaculi robust with compact helix-shaped feature at proximal half and comparatively slender with sparse helix-shaped feature at distal half, diverticulum receptaculi apparently dilated or subglobular, spermathecal pump slim and wall with spiral loop ( Fig. 41 View FIGURES 39, 41 ).

Material examined: Holotype: male, Bawangling Mountain, Changjiang County, Hainan Province, China, 750m, 5–7 June 2008, coll. Yibing Ba, Juntong Lang. Paratypes: 2 females, same data as holotype; 1 male, 2 females, same locality, 8–11 November 2006, coll. Jiliang Wang, Chao Gao; 2 females, Bawangling Mountain, Hainan Province, China, 433m, 30 July 2010, coll. Chaozhong Jiang.

Remarks: This new species resembles G. multipunctatus Che, Zhang and Wang, 2007   ; but differs from the latter by the colouration of the tegmen and frons, the latter with ten yellow spots arranged 1, 2, 1, 2, 1, 2, 1 from base to apex of tegmen and frons with one yellow spot near apical margin. The structure of the aedeagus of the two species is very different.

Etymology: The specific name “ nonomaculatus   ’’ refers to the nine yellow spots on the tegmen.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Issidae

Genus

Gergithus