São abordadas a sinonímia de Ceresa alta Walker, 1851, atualmente Stictocephala alta, e de Thelia constans Walker, 1851, como seu sinônimo júnior. Comentários sobre Stictocephala bisonia Kopp & Yonke, 1977 são apresentados também.

This paper deals with the synonymy of Ceresa alta Walker, 1851, now Stictocephala alta, and its junior synonym, Thelia constans Walker, 1851. Notes on Stictocephala bisonia Kopp & Yonke, 1977 are also presented.

É apresentada revisão do gênero Ceresa Amyot & Serville, 1843. Trinta e quatro espécies são reconhecidas como válidas, cada qual descrita e ilustrada, cinco das quais são revalidadas: C. abbreviata Andrade, 1989, C. albosignata Remes-Lenicov, 1973, C. amazonica Andrade, 2002, C. atrata Remes-Lenicov, 1973, C. axillaris (Germar, 1835), C. brunnicornis (Germar, 1835), C. calosa Andrade, 2002, C. cavicornis Stål, 1859, C. chacoana Remes-Lenicov, 1973, C. cuprea Funkhouser, 1927, C. denticulata Andrade, 2002, C. distans Butler, 1877 sp. rev., C. fasciatithorax Remes-Lenicov, 1973, C. maculipennis Remes-Lenicov, 1973, C. malina (Germar, 1835), C. mulsa Remes-Lenicov, 1973, C. nigripectus Remes-Lenicov, 1973, C. paranaensis Remes-Lenicov, 1976, C. paulistana Remes-Lenicov, 1976, C. pauperata Berg, 1883 sp. rev., C. piramidalis Remes-Lenicov, 1973, C. platycera Remes-Lenicov, 1973, C. plaumanni Sakakibara, 1977, C. projecta Funkhouser, 1927 sp. rev., C. prosocera Remes-Lenicov, 1973, C. remeslenicovae Andrade, 2002, C. rufescens Butler, 1877 sp. rev., C. similis Andrade, 1989, C. spinifera Fairmaire, 1846 sp. rev., C. stylata Remes-Lenicov, 1973, C. uruguayensis Berg, 1883, C. ustulata Fairmaire, 1846, C. viridilineata Funkhouser, 1943 e C. vitulus (Fabricius, 1775). C. excisa Walker, 1858 syn. rev. é convalidada como sinônimo júnior de C. vitulus (Fabricius, 1775) e as seguintes novas sinonímias são propostas: C. peruensis Remes-Lenicov, 1973 syn. nov. = C. distans Butler, 1877, C. alboguttata Remes-Lenicov, 1973 syn. nov. = C. rufescens Butler, 1877 e C. insignis Walker, 1858 syn. nov. = C. ustulata Fairmaire, 1846. C. jugifera Goding é discutida como nomen dubium e C. conica Sakakibara como incertae sedis. Lectótipos são designados para C. pauperata Berg, 1883, C. spinifera Fairmaire, 1846 e C. uruguayensis Berg, 1883. A distribuição geográfica do gênero é confirmada como sendo exclusivamente Neotropical, com registros desde o departamento de Quezaltenango, Guatemala, até a província de Rio Negro, Argentina.

A revision of the genus Ceresa Amyot & Serville, 1843 is presented. Thirty-four species are recognized as valid, each one described and illustrated, five of which are revalidated: C. abbreviata Andrade, 1989, C. albosignata Remes-Lenicov, 1973, C. amazonica Andrade, 2002, C. atrata Remes-Lenicov, 1973, C. axillaris (Germar, 1835), C. brunnicornis (Germar, 1835), C. calosa Andrade, 2002, C. cavicornis Stål, 1859, C. chacoana Remes-Lenicov, 1973, C. cuprea Funkhouser, 1927, C. denticulata Andrade, 2002, C. distans Butler, 1877 sp. rev., C. fasciatithorax Remes-Lenicov, 1973, C. maculipennis Remes-Lenicov, 1973, C. malina (Germar, 1835), C. mulsa Remes-Lenicov, 1973, C. nigripectus Remes-Lenicov, 1973, C. paranaensis Remes-Lenicov, 1976, C. paulistana Remes-Lenicov, 1976, C. pauperata Berg, 1883 sp. rev., C. piramidalis Remes-Lenicov, 1973, C. platycera Remes-Lenicov, 1973, C. plaumanni Sakakibara, 1977, C. projecta Funkhouser, 1927 sp. rev., C. prosocera Remes-Lenicov, 1973, C. remeslenicovae Andrade, 2002, C. rufescens Butler, 1877 sp. rev., C. similis Andrade, 1989, C. spinifera Fairmaire, 1846 sp. rev., C. stylata Remes-Lenicov, 1973, C. uruguayensis Berg, 1883, C. ustulata Fairmaire, 1846, C. viridilineata Funkhouser, 1943 and C. vitulus (Fabricius, 1775). C. excisa Walker, 1858 syn. rev. is convalidated as a junior synonym of C. vitulus (Fabricius, 1775) and the following new synonymies are proposed: C. peruensis Remes-Lenicov, 1973 syn. nov. = C. distans Butler, 1877, C. alboguttata Remes-Lenicov, 1973 syn. nov. = C. rufescens Butler, 1877 and C. insignis Walker, 1858 syn. nov. = C. ustulata Fairmaire, 1846. C. jugifera Goding is discussed as nomen dubium and C. conica Sakakibara as incertae sedis. Lectotypes are designated for C. pauperata Berg, 1883, C. spinifera Fairmaire, 1846 and C. uruguayensis Berg, 1883. The geographical distribution of the genus is confirmed as being exclusively Neotropical, with records from the department of Quezaltenango, Guatemala, up to the province of Rio Negro, Argentina.

O nitrogênio é considerado o elemento mineral mais abundante nas plantas, sendo componente essencial de biomoléculas e inúmeras enzimas. O objetivo deste trabalho foi avaliar a eficiência no processo de assimilação do nitrogênio e encontrar parâmetros indicativos do potencial de fixação biológica em variedades de cana-de-açúcar (Saccharum officinarum) cultivadas in vitro. Foram utilizadas as variedades de cana-de-açúcar RB 842021, RB 83102, RB 75126, RB 882980 e Co 997, além da Brachiaria arrecta (testemunha), cultivadas in vitro em diferentes níveis de nitrogênio [M1 (9,83 mM), M2 (2,46 mM), M3 (0,49 mM), M4 (0,0 mM)]. Todas as variedades e a cultura testemunha (Brachiaria arrecta) apresentaram atividade da nitrato redutase (NR) constitutiva e também da glutamina sintetase (GS), mesmo na ausência de amônio e nitrato no meio de cultura. A variedade RB 842021 apresentou a maior atividade da nitrato redutase e o maior conteúdo de clorofilas a e b, e a variedade RB 882980 a maior atividade da glutamina sintetase nas mesmas condições de cultivo, o que pode representar maior potencial de assimilação do nitrogênio.

Nitrogen is considered the most abundant mineral element in the plants and an essential component to biomolecules and several enzymes. The objective of this work was to estimate nitrogen assimilation efficiency process and to identify biological fixation potential parameters on sugar cane varieties cultivated in vitro. The sugar cane varieties used were RB 842021, RB 83102, RB 75126, RB 882980, CO 997, besides Brachiaria arrecta (witness), cultivated in vitro in different nitrogen levels [M1 (9.83 mM), M2 (2.46 mM), M3 (0.49 mM), M4 (0.0 mM)]. All the varieties and plant witness (Brachiaria arrecta) exhibited redutase nitrate activity and glutamina sintetase, even in the ammonium and nitrate absence culture media. The RB 842021 variety showed the highest activity of nitrate reductase and the higher chlorophyll a and b contents, whereas RB 882980 variety showed the highest glutamine sintetase activity when cultivated without nitrogen, representing a higher potential assimilation of nitrogen.

São apresentadas a recaracterização do gênero Paraceresa Kopp & Yonke, 1979, as novas combinações P. chacoensis (Remes-Lenicov, 1973), P. colon (Germar, 1835), esta com Ceresa recta Walker, 1858 como novo sinônimo, P. ornithisca (Remes-Lenicov, 1978) e P. spinosa (Remes-Lenicov, 1973), bem como lista remissiva das espécies reconhecidas.

A recharacterization of the genus Paraceresa Kopp & Yonke, 1979, the new combinations P. chacoensis (Remes-Lenicov, 1973), P. colon (Germar, 1835), with Ceresa recta Walker, 1858 as a new synonym, P. ornithisca (Remes-Lenicov, 1978) and P. spinosa (Remes-Lenicov, 1973), and a check list of recognized species are presented.

São propostas alterações nomenclaturais em Spissistilus Caldwell, 1949, a saber S. discolor (Fairmaire, 1846) comb. nov. e S. puncticeps (Stål, 1864) sp. rev., comb. nov., esta com Ceresa occidentalis Funkhouser, 1915 como novo sinônimo, incluindo fotografias dos tipos.

The following nomenclatural changes in Spissistilus, Caldwell, 1949 are proposed: Spissistilus discolor (Fairmaire, 1846) comb. nov. and S. puncticeps (Stål, 1864) sp. rev., comb. nov., with Ceresa occidentalis Funkhouser, 1915 as a new synonym. Photographs of the types are also added.

Cyphonia tumefata sp. nov. de Barigüi, Estado do Paraná, Brasil, é descrita e ilustrada.

Cyphonia tumefata sp. nov., from Barigüi, Paraná State, Brazil, is described and illustrated.

Potnia spatulata sp. nov., from Amazonas State, Brazil, is described and illustrated.

Omolon similis sp. nov., from Caqueta, Florencia, Colombia, is described and illustrated.

Vestistiloides gen. nov. is described for C. uncicornis Fowler, 1895, the type species, Ceresa concinna Fowler, 1895, C. nigra Goding, 1928, C. nigrovittata Fowler, 1895, C. nigricornis Fowler, 1895, C. nitidalis Buckton, 1905, C. sallei Stål, 1864, C. variabilis Fowler, 1895 and Vestistilus distinctus Andrade, 1989.

Description of the female and notes on the geographical distribution of Cladonota amazonica (Andrade, 1978) are presented.

Ceresa amazonica sp. nov. from Reserva Ducke, Manaus, Amazonas, Brasil, C. calosa sp. nov. from Curitiba, Paraná, Brasil, C. denticulata sp. nov. from Valle Chanchamayo, Junín, Peru) and C. remeslenicovae sp. nov. (from Piracicaba, São Paulo, Brasil) are described and illustrated.

Ceresa robusta Butler, 1877 is transferred to the genus Alcmeone Stål, 1867 and A. sinuata Fonseca & Diringshofen, 1974 is considered its new synonym.

Proranus intractus (Walker, 1858) (Cicadellidae), combination proposed by Stål (1862), originally described in Ceresa Amyot & Serville, 1843 (Membracidae), is here reinstated.

Amastris stali Fowler, 1895, nom. nud. is here considered.

Smilidarnis gen. n. (type-species: Smilidarnis fasciatus sp. n.) from Aguaytia, Peru and S. concolor sp. n. from Rio de Janeiro, Corcovado, Brazil are described and illustrated.