Tretogonia Melichar, 1926

Mejdalani, Gabriel, Domahovski, Alexandre C., Rendón-Mera, Diana I. & Cavichioli, Rodney R., 2019, Tretogonia Melichar (Hemiptera: Cicadellidae: Proconiini): two new species from South Brazil and a redescription of T. dentalis Emmrich, 1988, European Journal of Taxonomy 513, pp. 1-14 : 3

publication ID	https://doi.org/10.5852/ejt.2019.513
publication LSID	lsid:zoobank.org:pub:D4A665FE-4F4C-4BF8-8491-81CF086FAE8E
DOI	https://doi.org/10.5281/zenodo.5942756
persistent identifier	https://treatment.plazi.org/id/03BEF63F-FFD4-FF8C-FD9D-FD45DF9E188C
treatment provided by	Plazi (2019-04-09 19:58:24, last updated 2024-11-27 17:55:26)
scientific name	Tretogonia Melichar, 1926
status

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Genus Tretogonia Melichar, 1926 View in CoL

Tretogonia Melichar, 1926: 273 View in CoL (type species: Tettigonia pruinosa Walker, 1851 View in CoL , preoccupied (= Tretogonia notatifrons Melichar, 1926 View in CoL ), by original designation).

Remarks

According to Young (1968), Tretogonia belongs to the group of genera in which the hind leg meron is exposed when the forewings are at rest position. It can be recognized by the following combination of characters (characters (1) and (4) are proposed here for the first time as taxonomically useful): (1) antennal ledge with distinct dorsal and ventral carinae, in frontal and lateral views, (2) pronotum and forewings conspicuously pitted, each pit with small seta, (3) posterior margin of pronotum rounded and extending to scutoscutellar suture, (4) forewing brachial cell distinctly narrowed basally and (5) general coloration brown. In species of Tretogonia , the body is usually densely covered by brochosomes. The two new Brazilian species described here show the above-mentioned diagnostic features of Tretogonia . This genus is apparently monophyletic, as indicated by the morphological phylogenetic analysis of the Proconiini conducted by Mejdalani (2000). Synapomorphies of Tretogonia include the pronotum strongly produced posteriorly, the conspicuous pronotal and forewing pits, and the narrowed forewing brachial cell ( Mejdalani 2000).

The following species are currently recognized in this genus (distribution based on Young 1968, Cavichioli & Zanol 1991, Freytag & Sharkey 2002, McKamey 2007, Wilson et al. 2009, Dellapé 2016 and Takiya et al. 2018; an asterisk indicates species known only from females):

T. albicans (Walker, 1858) *. Brazil.

T. bergi Young, 1968 . Argentina, Brazil, Paraguay, Uruguay.

T. callifera Melichar, 1926 . Bolivia, Brazil, French Guiana, Peru, Suriname.

T. cinerea (Osborn, 1926) . Bolivia, Brazil.

T. conspersa Schmidt, 1928 . Colombia, Guyana, Panama, Venezuela.

T. conspicua Melichar, 1926 *. Ecuador.

T. costalimai Young, 1968 . Brazil, Guyana, Venezuela.

T. cribrata Melichar, 1926 . Argentina, Bolivia, Brazil, French Guiana, Peru.

T. dentalis Emmrich, 1988 . Argentina, Brazil (new record), Paraguay.

T. diminuta sp. nov. Brazil.

T. elegantula sp. nov. Brazil.

T. lateritia (Taschenberg, 1884) *. Brazil.

T. notatifrons Melichar, 1926 . Argentina, Bolivia, Brazil, Ecuador, French Guiana, Paraguay, Suriname. T. punctatissima Melichar, 1926 . Colombia, Ecuador, Peru, Venezuela.

T. tomentosa (Distant, 1908) . Ecuador.

References

Cavichioli R. R. & Zanol K. M. R. 1991. Especies de Cicadellinae, Deltocephalinae (Homoptera, Cicadellidae) da Ilha de Maraca, Roraima. Acta Amazonica 21: 55 - 61. https: // doi. org / 10.1590 / 1809 - 43921991211061

Dellape G. 2016. Description of the female terminalia of twelve species of Proconiini and a key to genera from Argentina (Insecta: Hemiptera: Cicadellidae). Zootaxa 4117: 211 - 225. https: // doi. org / 10.11646 / zootaxa. 4117.2.5

Emmrich R. 1988. Eine neue Art der Gattung Tretogonia MEL. aus Paraguay (Insecta, Homoptera, Auchenorrhyncha, Cicadellidae). Reichenbachia 25: 189 - 190.

Freytag P. H. & Sharkey M. J. 2002. A preliminary list of the leafhoppers (Homoptera: Cicadellidae) of Colombia. Biota Colombiana 3: 235 - 283.

McKamey S. H. 2007. Taxonomic catalogue of the leafhoppers (Membracoidea). Part 1. Cicadellinae. Memoirs of the American Entomological Institute 78: 1 - 394.

Mejdalani G. 2000. Morfologia Externa e Analise Cladistica dos Generos de Proconiini com o Mero Posterior Exposto (Hemiptera, Cicadellidae, Cicadellinae). DSc Thesis, Universidade de Sao Paulo, Sao Paulo, Brazil.

Melichar L. 1926. Monographie der Cicadellinen. III. Annales Historico-Naturales Musei Nationalis Hungarici 23: 273 - 394.

Takiya D. M., Cavichioli R. R., Mejdalani G., Felix M., Goncalves C. C., Camisao B. M. & Barbosa J. F. 2018. Cicadellidae in 'Catalogo taxonomico da fauna do Brasil'. PNUD. Available from http: // fauna. jbrj. gov. br / fauna / faunadobrasil / 11013 [accessed 20 Aug. 2018].

Wilson M. R., Turner J. A. & McKamey S. H. 2009. Sharpshooter leafhoppers of the World (Hemiptera: Cicadellidae subfamily Cicadellinae). National Museum Wales. Available from http: // naturalhistory. museumwales. ac. uk / Sharpshooters [accessed 20 Aug. 2018].

Young D. A. 1968. Taxonomic study of the Cicadellinae (Homoptera: Cicadellidae), Part 1, Proconiini. Bulletin of the United States National Museum 261: 1 - 287. https: // doi. org / 10.5962 / bhl. part. 20869