Tibicinini Distant, 1905

Ruschel, Tatiana Petersen, 2018, Gibbocicada brasiliana, new genus and new species from Brazil and a key for the genera of Tibicinini (Hemiptera: Auchenorrhyncha: Cicadidae), Acta Entomologica Musei Nationalis Pragae 58 (2), pp. 559-566 : 560-566

Tibicinini Distant, 1905

Type genus. Tibicina Kolenati, 1857 (type species Cicada haematodes Scopoli, 1763 ).

Diagnosis (modified from DISTANT 1905 and LEE 2012). Headincluding eyes narrower than the lateral angle of pronotalcollar and narrowerthan mesonotum. Supra-antennal platesnot meeting the eyes laterally (except in Okanagodes Davis, 1919 ). Pronotum longer than head, generally more or less distinctly narrowed anteriorly. Mesonotum wider than pronotum (not including the pronotal collar). Mesonotal stridulatory apparatus absent. Male operculum not reaching posterior margins of sternite II. Wings hyaline (tinged in yellowish brownin Subtibicina Lee, 2012 ); base of wings usually reddish or yellowish orange; veins of fore wings fuscousblack (only in Subpsaltria Chen, 1943 ). Fore wings: somewhat talc-like and obscurely wrinkled, their greatest width always more than one third of their length; marginal area present. Hind wing first cubital cell width at distal end about equal to second cubital cell. Abdomen more or less cylindricaland attenuated posteriorly. Timbal organs present. Uncus usually very prolonged and prominent. Pygofer upper lobes absent. Claspers absent. Theca not laterally expanded or distally ornamented.

Included genera and number of species. Clidophleps Van Duzee, 1915 (8 species); Gibbocicada gen. nov. (1); Okanagana Distant, 1905 (57); Okanagodes Davis, 1919 (3); Paharia Distant, 1905 (6); Subpsaltria Chen, 1943 (1); Subtibicina Lee, 2012 (1); Tibicina Kolenati, 1857 (17); Tibicinoides Distant, 1914 (3).

Distribution. Holarctic, Orientaland Neotropical ( Fig. 1 ).

Key to the genera of Tibicinini

1 Head short, three times shorter than pronotum in dorsal view; lateral ocelli almost reaching the anterior margin of pronotum ( Fig. 6 ); pronotum and mesonotum pronounced dorsally in lateral view ( Fig. 5 ). .......................................... Gibbocicada gen. nov.

‒ Head long, its length less than three times the pronotum ( Fig. 19 ); lateral ocelli not reaching the anterior margin of pronotum ( Fig. 19 ); pronotum and mesonotum not pronounced dorsally in lateral view ( Fig. 20 ). .................................................................. 2

2 Radial cell of fore wings wider than ulnar cell 3 ( Fig. 21 ). ............................. Clidophleps Van Duzee, 1915

‒ Radial cell of fore wings about as wide as ulnar cell 3 ( Fig. 22 ).................................................................. 3

3 Wings hyaline but tinged in yellowish brown; fore wing slender, median and cubitus anterior veins subparallel............................. Subtibicina Lee, 2012

‒ Wings hyaline, not tinged; fore wing broad, median and cubitus anterior veins divergent. ....................... 4

4 Vertex short; supra-antennal plates meeting the eyes laterally; eyes protruding laterally, as wide as vertex; postclypeus prominent in dorsal view, as long as vertex ( Fig. 23 ). ................ Okanagodes Davis, 1919

‒ Vertex wide; supra-antennal plates not meeting the eyes laterally; eyes not protruding laterally, narrower than vertex; postclypeus not prominent, shorter than vertex ( Fig. 24 ). ....................................................... 5

5 Fore wing slender, its width almost twice the length, apical cells 7 and 8 as long as wide, base of wings usually reddish orange ( Fig. 25 ) . ................................ .......................................... Tibicinoides Distant, 1914

‒ Fore wing broad, its width almost three times the length, apical cells 7 and 8 longer than wide, base of wings usually yellow orange ( Fig. 26 ). ................... 6

6 Veins of fore wings fuscous black; female with a pair of striated areas on the antero-lateral sides of mesonotum. ........................ Subpsaltria Chen, 1943

‒ Veinsof fore wings not outlined in fuscous black; female without striated areas on the antero-lateral sides of mesonotum. ................................................ 7

7 Forewing ulnar cell 3 longer than radial cell; apical cell 5 shorter than the others. ..................................... ................................................ Paharia Distant, 1905

‒ Fore wing ulnar cell 3 nearly as long as radial cell; apical cell 5 as long as the others. ........................... 8

8 Fore wing radial cell usually as long as medial cell; timbals of male elongated laterally and directed posteriad............................. Tibicina Kolenati, 1857

‒ Forewing radial cell usually shorter than medial cell; timbals of male not elongated laterally, directed anterolaterad ( Fig. 26 ). .... Okanagana Distant, 1905

Figures

Fig 1. Distribution of genera of Tibicinini in the Holartic, Oriental and Neotropical Regions based on METCALF (1963), DUFFELS & VAN DER LAAN (1985), SANBORN (2013) and this paper.

Figs 2–11. Gibbocicada brasiliana gen. et sp. nov., holotype, male. 2 – habitus in dorsal view; 3 – wings in dorsal view (arrow points to the basal third of CuP and 1A which are unfused); 4 – detail of hind wing veins in dorsal view (arrow points to veins RP and M which are unfused at their bases); 5 – habitus in lateral view (wings not extended); 6 – head and pronotum in dorsal view; 7 – postclypeus in ventral view; 8 – thorax in ventral view; 9 – operculum in latero-ventral view; 10 – timbal in latero-ventral view; 11 – sternites VII and VIII in ventral view.Abbreviations: 1A – anal vein, CuA – cubitus anterior vein, CuP – cubitus posterior vein, M – median vein, mc – meracanthus, op – operculum, RP – radius posterior vein, tim – timbal, tymc – tympanal cavity, st – sternite. Scale bars: 2 – 2 cm; 3, 5 – 5 mm; 6–8, 11 – 2 mm; 4, 9, 10 –1 mm.

Figs 19–26. Diagnostic characters of the genera of Tibicinini. 19–21 – Clidophleps wrighti Davis, 1926; 22, 24, 26 – Okanagana annulata Davis, 1935; 23 – Okanagodes gracilis Davis, 1919; 25 – Tibicinoides minuta (Davis, 1915). 19, 23, 24 – Head and pronotum in dorsal view; 20 – habitus in lateral view; 21, 22 – fore and hind wings; 25, 26 – habitus, in dorsal view.Abbreviations: a – apical cell, mc – medial cell, rc – radial cell, tim – timbal, u – ulnar cell. Scal e bars: 19, 23, 24 – 2 mm; 21, 22, 25, 26 – 5 mm. Photographs by Steve Thurston (AMNH).