Gergithus frontilongus sp. nov. A. Habitus, dorsal view. B. Habitus, lateral view. C. Metope and clypeus, facial view. D. Metope and clypeus, lateral view. E. Fore leg, mid leg, hind leg. F. Tegmen. G. Hind wing. Scale bars = 1 mm.  

Gergithus frontilongus sp. nov. A. Habitus, dorsal view. B. Habitus, lateral view. C. Metope and clypeus, facial view. D. Metope and clypeus, lateral view. E. Fore leg, mid leg, hind leg. F. Tegmen. G. Hind wing. Scale bars = 1 mm.  

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Nomenclatural changes are made in three previously described genera in the planthopper tribe Hemisphaeriini (Hemiptera: Fulgoromorpha: Issidae: Issinae), viz Gergithus Stål, 1870, Mongoliana Distant, 1909 and Hemisphaeroides Melichar, 1903. In addition, a new genus, Gnezdilovius gen. nov., with Gergithus lineatus Kato, 1933 as its type species, is...

Contexts in source publication

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... Metope elongate, with median carina, without tubercules (Chen et al. 2014: figs 2-35, 2-36) ……………………………………………………Neohemisphaerius Chen, Zhang & Chang, 2014 -Metope almost as wide as long in middle line, without median carina, with a row of tubercules along lateral margin (Chen et al. 2014: fig. 2-33) ………… Paramongoliana Chen, Zhang & Chang, 2014 4. Metope with large bulge at center (Genezdilov 2013b: figs 2-4) …Bolbosphaerius Gnezdilov, 2013 -Metope flat or slightly elevated in median area, without such bulge (Figs 1B, D, F-G, J, L, 2C, 8B, 9D, 10H) ...
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... Pygofer in profile with hind margin distinctly angulated; phallobase asymmetrical at apex (Chan & Yang 1994: figs 27-30) …………………………………Euhemisphaerius Chan & Yang, 1994 -Pygofer not distinctly angulated; phallobase symmetrical fig. 26 Figs 2D, 5C, E, 6B, 7B) and tegmen with costal margin moderately convex at basal one third as "relief shoulder" (Figs 2A, 5A, 6A, ...
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... Pygofer in profile with hind margin distinctly angulated; phallobase asymmetrical at apex (Chan & Yang 1994: figs 27-30) …………………………………Euhemisphaerius Chan & Yang, 1994 -Pygofer not distinctly angulated; phallobase symmetrical fig. 26 Figs 2D, 5C, E, 6B, 7B) and tegmen with costal margin moderately convex at basal one third as "relief shoulder" (Figs 2A, 5A, 6A, 7A). ...
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... subquadrate, margins carinate, anterior margin straight or weakly concave, posterior margin weakly concave (Figs 2A, 5A, D, 6C, 7A). Metope greatly elongate, slightly widening below antennae; upper margin straight ( Figs 2C, 5B, F, 6D, 7C). ...
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... subquadrate, margins carinate, anterior margin straight or weakly concave, posterior margin weakly concave (Figs 2A, 5A, D, 6C, 7A). Metope greatly elongate, slightly widening below antennae; upper margin straight ( Figs 2C, 5B, F, 6D, 7C). Metopoclypeal suture straight ( Figs 2C, 5B, F, 6D, 7C). ...
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... greatly elongate, slightly widening below antennae; upper margin straight ( Figs 2C, 5B, F, 6D, 7C). Metopoclypeal suture straight ( Figs 2C, 5B, F, 6D, 7C). ...
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... nearly triangular and in same oblique plane, with lateral margins continuous with those of metope; anteclypeus extremely narrow in ventral view, and roundly angulately protruding ventrally in lateral view ( Figs 2C-D, 5B-C, E-F, 6B, D, 7B-C). Ocelli rudimentary. ...
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... clearly short, as long as coryphe in middle line or slightly shorter than it, extremely narrow behind eyes, margins obviously ridged; lateral lobes large, fan-shaped in frontal view, ventral margins moderately oblique, lateroventral angles obtusely convex (Figs 2A, C, 5A-B, D, F, 6C-D, 7A, C). Mesonotum with anterior margin obviously ridged and shallowly concave, with two rounded pits medially on each side (Figs 2A, 5A, D, 6C, 7A). Tegula small. ...
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... ovate-oblong, depressed at basal surface, costal margin moderately convex at basal one third as "relief shoulder", longitudinal veins prominent, with many supernumerary branches and numerous irregular transverse veinlets; claval suture absent (Figs 2F, 5C-D, 6E, 7B). Hind wing mostly well-developed single lobe, veins netlike, sometimes reduced (Fig. 2G). Legs moderately long, not dilated; hind tibia with two spines ...
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... margin, connected with large subtriangulate fuscous macula after fascia and enclosing pale yellow spot, relatively short and narrow fuscous fascia near distal one third, with series of irregular infuscate speckles at gaps of pale veins. Hind wing pale brown, veins fuscous. Legs fulvous with black stripes, tips of teeth black. Abdomen fulvous ( Fig. 2A-G). ...
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... and tHorax. Coryphe 1.3 times as wide between basal angles as median length, median carina present ( Fig. 2A). Metope about 3.5 times as long in middle as width at upper margin, 2.0 times as wide at widest part below antennae as at narrowest upper margin (Fig. 2C). Mesonotum large, 2.6 times as long as pronotum in midline, approximately 2.5 times as wide at anterior margin as long in midline, median carina weak ( Fig. 2A). Tegmen ovate-oblong, ...
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... and tHorax. Coryphe 1.3 times as wide between basal angles as median length, median carina present ( Fig. 2A). Metope about 3.5 times as long in middle as width at upper margin, 2.0 times as wide at widest part below antennae as at narrowest upper margin (Fig. 2C). Mesonotum large, 2.6 times as long as pronotum in midline, approximately 2.5 times as wide at anterior margin as long in midline, median carina weak ( Fig. 2A). Tegmen ovate-oblong, approximately 2.0 times as long in mid- line as wide at widest part; costal margin moderately convex at basal one third, apical margin acutely rounded, ...
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... length, median carina present ( Fig. 2A). Metope about 3.5 times as long in middle as width at upper margin, 2.0 times as wide at widest part below antennae as at narrowest upper margin (Fig. 2C). Mesonotum large, 2.6 times as long as pronotum in midline, approximately 2.5 times as wide at anterior margin as long in midline, median carina weak ( Fig. 2A). Tegmen ovate-oblong, approximately 2.0 times as long in mid- line as wide at widest part; costal margin moderately convex at basal one third, apical margin acutely rounded, postclaval margin straight; postcostal cell very wide, basal cell moderately long; longitudinal veins distinctly multiramose throughout wing, with transverse veins ...
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... 2.0 times as long in mid- line as wide at widest part; costal margin moderately convex at basal one third, apical margin acutely rounded, postclaval margin straight; postcostal cell very wide, basal cell moderately long; longitudinal veins distinctly multiramose throughout wing, with transverse veins more dense in basal third of wing (Fig. 2F). Hind wing veins net-like (Fig. 2G). Legs with fore femora roundly convex at apex, mid femora deeply concave subapically and roundly convex apically (Fig. 2E). Metatibiotarsal formula 6-11-2 (Fig. ...
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... line as wide at widest part; costal margin moderately convex at basal one third, apical margin acutely rounded, postclaval margin straight; postcostal cell very wide, basal cell moderately long; longitudinal veins distinctly multiramose throughout wing, with transverse veins more dense in basal third of wing (Fig. 2F). Hind wing veins net-like (Fig. 2G). Legs with fore femora roundly convex at apex, mid femora deeply concave subapically and roundly convex apically (Fig. 2E). Metatibiotarsal formula 6-11-2 (Fig. ...
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... margin straight; postcostal cell very wide, basal cell moderately long; longitudinal veins distinctly multiramose throughout wing, with transverse veins more dense in basal third of wing (Fig. 2F). Hind wing veins net-like (Fig. 2G). Legs with fore femora roundly convex at apex, mid femora deeply concave subapically and roundly convex apically (Fig. 2E). Metatibiotarsal formula 6-11-2 (Fig. ...
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... basal cell moderately long; longitudinal veins distinctly multiramose throughout wing, with transverse veins more dense in basal third of wing (Fig. 2F). Hind wing veins net-like (Fig. 2G). Legs with fore femora roundly convex at apex, mid femora deeply concave subapically and roundly convex apically (Fig. 2E). Metatibiotarsal formula 6-11-2 (Fig. ...
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... & Wang, 2007: 615, figs 5-13, China (Guangxi, Guizhou); Chen et al. 2014: 58, fig. 2-19A-I G. robustus (Schumacher, 1915) comb. nov. As Gergithus robustus Schumecher, 1915: 127, China (Taiwan); Hori 1969: 56, pl. 2 fig. 15; : 50, fig. 21 * G. rosticus (Chan & Yang, 1994 comb. nov. As Gergithus rosticus Chan & Yang, 1994: 34, fig. 12, China (Taiwan) G. rotundus comb. nov. As Gergithus rotundus Chan & Yang, 1994: 36, ...
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... & Wang, 2007: 615, figs 5-13, China (Guangxi, Guizhou); Chen et al. 2014: 58, fig. 2-19A-I G. robustus (Schumacher, 1915) comb. nov. As Gergithus robustus Schumecher, 1915: 127, China (Taiwan); Hori 1969: 56, pl. 2 fig. 15; : 50, fig. 21 * G. rosticus (Chan & Yang, 1994 comb. nov. As Gergithus rosticus Chan & Yang, 1994: 34, fig. 12, China (Taiwan) G. rotundus comb. nov. As Gergithus rotundus Chan & Yang, 1994: 36, fig. 12, China (Taiwan) ** G. rugiformis (Zhang & Che, 2009) comb. nov. As Gergithus rugiformis Zhang & Che, 2009: 183, figs 1-15, China (Chongqing, Guangxi) G. satsumensis (Matsumura, 1916) comb. nov. As Gergithus satsumensis Matsumura, 1916: 101, ...
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... 58, fig. 2-19A-I G. robustus (Schumacher, 1915) comb. nov. As Gergithus robustus Schumecher, 1915: 127, China (Taiwan); Hori 1969: 56, pl. 2 fig. 15; : 50, fig. 21 * G. rosticus (Chan & Yang, 1994 comb. nov. As Gergithus rosticus Chan & Yang, 1994: 34, fig. 12, China (Taiwan) G. rotundus comb. nov. As Gergithus rotundus Chan & Yang, 1994: 36, fig. 12, China (Taiwan) ** G. rugiformis (Zhang & Che, 2009) comb. nov. As Gergithus rugiformis Zhang & Che, 2009: 183, figs 1-15, China (Chongqing, Guangxi) G. satsumensis (Matsumura, 1916) comb. nov. As Gergithus satsumensis Matsumura, 1916: 101, Japan; Hori 1969: 52, fig. 1: 4-6, pl. 2 figs 5-8 ** G. spinosus comb. nov. As Gergithus ...
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... Fujian, Taiwan), Japan; Chan & Yang 1994: 50, fig. 21; Meng & Wang 2012: 11, figs 65-73;Chen et al. 2014: 60, fig. 2-20A-I ** G. tristriatus comb. nov. As Gergithus tristriatus Meng & Wang, 2012: 8, figs 19-38, 40, 42, China (Yunnan) * G. unicolor (Melichar, 1906) comb. nov. As Gergithus unicolor Melichar, 1906; : 27, fig. 8 G. variabilis (Butler, 1875 comb. nov. As Hemisphaerius ...
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... Fujian, Taiwan), Japan; Chan & Yang 1994: 50, fig. 21; Meng & Wang 2012: 11, figs 65-73;Chen et al. 2014: 60, fig. 2-20A-I ** G. tristriatus comb. nov. As Gergithus tristriatus Meng & Wang, 2012: 8, figs 19-38, 40, 42, China (Yunnan) * G. unicolor (Melichar, 1906) comb. nov. As Gergithus unicolor Melichar, 1906; : 27, fig. 8 G. variabilis (Butler, 1875 comb. nov. As Hemisphaerius variabilis Butler, 1875: 98, 99, pl. IV, fig. 21, China (Hong Kong) * ...
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... figs 65-73;Chen et al. 2014: 60, fig. 2-20A-I ** G. tristriatus comb. nov. As Gergithus tristriatus Meng & Wang, 2012: 8, figs 19-38, 40, 42, China (Yunnan) * G. unicolor (Melichar, 1906) comb. nov. As Gergithus unicolor Melichar, 1906; : 27, fig. 8 G. variabilis (Butler, 1875 comb. nov. As Hemisphaerius variabilis Butler, 1875: 98, 99, pl. IV, fig. 21, China (Hong Kong) * G. yayeyamensis (Hori, 1969) comb. nov. As Gergithus yayeyamensis Hori, 1969: 55, fig. 1: 10-11, pl. 2 fig. 11, China (Taiwan, Japan) ** G. yunnanensis comb. nov. As Gergithus yunnanensis Che, Zhang & Wang, 2007: 625, figs 60-67, China (Yunnan) Hemisphaeroides Figs 10-11 Hemisphaeroides Melichar, 1903. Type ...

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Citations

... Sun et al. (2015) raised the group again to the subfamily level based on partial sequences of the nuclear Wingless (Wg) and 18S rDNA genes and Wang et al. (2016) enlarged the subfamily based on 18S, 28S, COXI and Cytb genes to include four tribes (Kodaianellini, Sarimini, Parahiraciini, Hemisphaeriini). However, here we prefer to follow Gnezdilov (2013a) and treat the group as a tribe of the subfamily Issinae which was also followed by Meng et al (2017). ...
... Neohemisphaerius is similar to Hemisphaerius Schaum, 1850 and Gergithus Stål, 1870, but it differs from the two genera by having a frons with a median carina, and forewings with a claval suture developed. The genus Neohemisphaerius runs close to Paramongoliana in the key by Meng et al. (2017). It differs from Paramongoliana in: frons with median carinae, without a row of pustules along the lateral margins; clypeus distinctly convex on disc in midline; forewings with irregular markings; phallobase with pair of ventral hooks directed basad. ...
Article
Two new species of the tribe Hemisphaeriini: Ceratogergithusbrachyspinus Yang & Chen, sp. nov. (Yunnan) and Neohemisphaeriusclavatus Yang & Chen, sp. nov. (Guizhou) are described and illustrated. A checklist to Hemisphaeriini genera is provided. The generic characteristics of the genera Ceratogergithus Gnezdilov, 2017 and Neohemisphaerius Chen, Zhang & Chang, 2014 are redefined. Checklists and keys to the species of each genus are given.
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The genus Gnezdilovius Meng, Webb et Wang, 2017 is revised. Maculergithus Constant et Pham, 2016, which was described as a subgenus of Gergithus Stål, 1870, is upgraded to a genus. Ishiharanus Hori, 1969 is reinstalled from synonymy with Gergithus and considered a valid name. Two new genera are erected, Ceratogergithus Gnezdilov, gen. n. (type species: Gergithus spinosus Che, Zhang et Wang, 2007) and Ophthalmosphaerius Gnezdilov, gen. n. (type species: Hernisphaerius trilobulus Che, Zhang et Wang, 2006). Hernisphaerius bistriatus Schumacher, 1915, Gergithus carbonarius Melichar, 1906, G. rosticus Chan et Yang, 1994, G. nummarius Chan et Yang, 1994, and G. rotundus Chan et Yang, 1994 are transferred to the genus Epyhemisphaerius Chan et Yang, 1994, Gergithus quinquemaculatus Che, Zhang, Wang, 2007—to the genus Maculergithus, Gergithus chelatus Che, Zhang, Wang, 2007 and G. pseudotessellatus Che, Zhang, Wang, 2007—to the genus Ceratogergithus, Hernisphaerius binocularis Chen, Zhang, Chang, 2014—to the genus Ophthalmosphaerius, and Gergithus robustus hoozanensis Schumacher, 1915—to the genus Gnezdilovius. The male genitalia of Gergithus herbaceus (Kirby, 1891) and Hernisphaerius interclusus Noualhier, 1896 are illustrated for the first time.
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A molecular phylogeny of the planthopper family Issidae (Hemiptera, Fulgoroidea) is provided using both Maximum likelihood and Bayesian inference analyses. The phylogeny is based on 18S, two parts of 28S, COXI and Cytb genes from 50 genera and 79 ingroup species (including 8 species recently excluded from Issidae). As with the only few previous studies, an important taxonomic impediment is observed with the sampling; however for the first time, all analyses depict several fully supported lineages, which challenge the recent proposed “modern classification” of the family. It also highlights a strong coherence between these lineages and their respective geographical distribution. All previously excluded taxa are confirmed as not being part of the Issidae as recently defined which monophyly is confirmed. Accordingly, a new classification of the family is proposed with 3 subfamilies and 7 tribes as follows. Neotropical issid Thioniini in Thioniinae stat. rev. is re-established as an independent lineage sister to all other Issidae. Palaearctic Issidae are weakly supported as a monophyletic lineage, Issinae stat. nov., including 2 tribes: Issini stat. nov. (genera Issus and Latissus) and Hysteropterini stat. rev. (all other Palaearctic genera). Oriental Issidae form a strongly supported monophyletic subfamily group Hemisphaeriinae stat. rev. including 4 tribes: Kodaianellini trib. nov., Sarimini trib. nov., Parahiraciini Cheng & Yang, 1991, and Hemisphaeriini Melichar, 1906, the latter including 2 subtribes: Mongolianina s.trib. nov., and Hemisphaeriina Melichar, 1906. A Neotropical lineage including the genus Picumna is provisionally placed in incertae sedis within the Hemisphaeriinae stat. nov.