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Arquivos do Instituto Biológico

Print version ISSN 0020-3653On-line version ISSN 1808-1657

Arq. Inst. Biol. vol.87  São Paulo  2020  Epub Dec 07, 2020

https://doi.org/10.1590/1808-1657001192018 

Scientific Communication

Agricultural Entomology

Sugarcane froghoppers in northeast Brazil

Cigarrinhas da cana-de-açúcar no nordeste brasileiro

Jayara Dayany da Costa Silva1  2  * 
http://orcid.org/0000-0002-1495-6383

Solange Maria de França3 
http://orcid.org/0000-0001-7602-6635

Diego Olympio Peixoto Lopes4 
http://orcid.org/0000-0001-8586-1640

Leila Luci Dinardo-Miranda5 
http://orcid.org/0000-0002-4390-5024

Francisco de Alcântara Neto6 
http://orcid.org/0000-0002-7656-6700

Paulo Roberto Ramalho Silva7 
http://orcid.org/0000-0001-5928-3226

1Universidade Federal do Piauí – Teresina (PI), Brazil

2Instituto Federal de Educação, Ciência e Tecnologia do Piauí – Oeiras (PI), Brazil

3Departamento de Fitotecnia, Universidade Federal do Piauí – Teresina (PI), Brazil

4Universidade Estadual Paulista “Júlio de Mesquita Filho” – Jaboticabal (SP), Brazil

5Instituto Agronômico, Centro de Cana-de-Açúcar – Ribeirão Preto (SP), Brazil

6Departamento de Fitotecnia, Universidade Federal do Piauí – Teresina (PI), Brazil

7Laboratório de Fitossanidade, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal do Piauí – Teresina (PI), Brazil


ABSTRACT:

Froghoppers (Mahanarva spp.) are pests of great economic importance for various regions of Brazil. Many species have a variation in the alar pattern, a parameter that often leads to incorrect identification. We collected froghopper adults in sugarcane fields in the municipalities of Murici and Maceió, in Alagoas, Lagoa de Itaenga and Camutanga, in Pernambuco, São Raimundo das Mangabeiras, in Maranhão, and União and Boa Hora, in the Teresina microregion in Piauí. The froghoppers were assembled and identified and are representatives of three species: M. spectabilis, M. fimbriolata, and M. posticata. This is the first record of M. spectabilis attacking sugarcane fields in the states of Piauí and Maranhão, Brazil. We found the species M. posticata and M. fimbriolata in the sugarcane fields of Alagoas and only M. posticata in Pernambuco.

KEYWORDS: pasture froghopper; root froghopper; occurrence; identification

RESUMO:

As cigarrinhas (Mahanarva spp.) são pragas de grande importância econômica em várias regiões do país. Muitas espécies têm variação no padrão alar, parâmetro que leva muitas vezes à identificação de forma incorreta. Adultos de cigarrinhas foram coletados em canaviais nos municípios de Murici e Maceió em Alagoas, Lagoa de Itaenga e Camutanga em Pernambuco, São Raimundo das Mangabeiras em Maranhão e União e Boa Hora, microrregião de Teresina em Piauí, e foram montados e identificados. As cigarrinhas coletadas são representantes de três espécies M. spectabilis, M. fimbriolata e M. posticata, sendo este o primeiro registro da espécie M. spectabilis atacando canaviais nos estados do Piauí e Maranhão. Em canaviais de Alagoas, foram encontradas as espécies M. posticata e M. fimbriolata e, em Pernambuco, apenas M. posticata.

PALAVRAS-CHAVE: cigarrinha-das-pastagens; cigarrinha-das-raízes; ocorrência; identificação

Froghoppers of the genus Mahanarva (Hemiptera: Cercopidae) are considered pests that cause severe damage to several species of grasses of economic importance in Brazil and worldwide, such as Saccharum spp. (sugarcane), Pennisetum purpureum Schumacher, 1827 (elephant grass), and Brachiaria ruziziensis Germain and Evrard, 1953 (Brachiaria grass). These crops are attacked quite frequently. Estimates point to losses caused by these insects at around two million dollars a year worldwide (AUAD et al., 2007; DINARDO-MIRANDA, 2014; SOBRINHO et al., 2010).

These insects are popularly known as grasshoppers or sugarcane froghoppers. Species of this genus cause damage by feeding on plant sap. Both young and adults, when feeding, inject toxic substances into plants, which cause leaf necrosis and compromise the photosynthetic process, reducing plant growth and production. The young or nymph forms, in addition, extract large amounts of water and nutrients directly from the roots, while adults suck the sap from leaves, where they inject toxins (GARCIA et al., 2007; DINARDO-MIRANDA, 2014; RESENDE et al., 2012).

DISTANT (1909) first described the genus Mahanarva in 1909, Mahanarva indicata was the type species, whose origin is attributed to Brazil. Currently, the genus has 46 described species (PALADINI; CAVICHIOLI, 2014; ALVES; CARVALHO, 2014). In Brazil, the species Mahanarva fimbriolata (Stål 1854) and Mahanarva posticata (Stål, 1855) are commonly found in sugarcane, where they cause significant losses. DINARDO-MIRANDA (2014), however, states that M. fimbriolata is uncommon in sugarcane fields in southeastern Brazil, where another species of Mahanarva predominates, but whose identification is not yet clear. Mahanarva spectabilis (Distant, 1909) is commonly associated with pastures, where it is considered a limiting factor for their development. However, it was recorded only once attacking sugarcane fields in Goiás together with Mahanarva liturata (Le Peletier and Serville, 1825). This is thus the first record of these species in sugarcane in Brazil (PEIXOTO et al., 2009; AUAD et al., 2011; ALVES; CARVALHO, 2014).

These species of grasshoppers have similarities in body size and alar pattern. These characteristics are related to phenotypic plasticity, which often makes it difficult to correctly identify species (CASTRO et al., 2007). For this, it is necessary to differentiate them using the male genitalia. This identification technique confirms the presence of M. spectabilis in an area where M. fimbriolata was believed to be present (ALVES; CARVALHO, 2014; PAULA-MORAES et al., 2008; DINARDO-MIRANDA, 2014).

This work was carried out with the objective of identifying and recording species of froghoppers that occur in sugarcane fields in the northeastern states of Brazil.

Adult froghoppers were collected in sugarcane fields in the municipalities of Murici and Maceió, in Alagoas, Lagoa de Itaenga and Camutanga, in the Forest Zone of Pernambuco, São Raimundo das Mangabeiras, in Maranhão, and União and Boa Hora, in the Teresina microregion in Piauí. They were kept in plastic containers containing 70% alcohol and transported to the Phytosanitary Laboratory of the Phytotechnics Department of the Agricultural Sciences Center of the Federal University of Piauí. They were then quantified, stored in falcon tubes, and sent to an expert of the Center of Sugarcane from Agronomic Institute of Campinas for species identification, which was carried out by observing the genitalia.

The collected froghoppers are representative of three species: M. spectabilis, M. fimbriolata, and M. posticata. We found that the froghoppers collected in the sugarcane fields of Piauí are M. spectabilis. In Maranhão, we found only M. spectabilis and M. fimbriolata; in Pernambuco, only M. posticata; and in Alagoas, M. fimbriolata and M. posticata (Table 1). This is, thus, the first record of the species M. spectabilis’ attacking sugarcane fields in the states of Piauí and Maranhão.

Table 1 Specimens of froghoppers collected in sugarcane fields in the northeast, Brazil. 

Location Species
Maceió – AL M. posticata
Murici – AL M. fimbriolata
Lagoa de Itaenga – PE M. posticata
Camutanga-PE M. posticata
Balsas – MA M. spectabilis and M. fimbriolata
Boa Hora – PI M. spectabilis
União – PI M. spectabilis

Mahanarva spectabilis is a pest frequently associated with pastures cultivated with P. purpureum and B. brizantha. It is considered one of the main problems limiting the development of forage grasses. However, the recording of this species is rare. It causes damage to sugarcane. There is only one record in Brazil (AUAD et al., 2007; AUAD et al., 2009; ALVES; CARVALHO, 2014).

Many species of cercopids have variations in the alar pattern. This variation makes it possible for specimens of Mahanarva spp. to present similarities in the pattern of tegmina. Species can thus be differentiated only by the male's genitals, mainly the parameter (ALVES; CARVALHO, 2014). Mahanarva spectabilis has a great variation in the alar color pattern (Fig. 1), which is very similar to that of M. fimbriolata. This can cause confusion in the correct identification of the species present in the area. Thus, there is a need for identification through male genitalia analysis and not only visualizing the alar pattern: the parts of the male genitalia of M. spectabilis, that is, aedeagus with a sickle-shaped, curved, dorsal process at the extremity (Fig. 2) (ALVES; CARVALHO, 2014). AUAD et al. (2009) described four wing patterns in M. spectabilis collected from pastures in Brasília, Federal District, and Presidente Prudente, São Paulo. The color descriptions were straw-yellow with black longitudinal spots, reddish with longitudinal black spots, totally red, and totally black. Individuals of this species collected in Maranhão and Piauí showed five wing color patterns: brown (Figs. 1A and 1B), black (Fig. 1B), reddish (Fig. 1C), reddish with dark spots on the posterior wing (Fig. 1D), and straw yellow (Fig. 1E).

Source: SILVA (2019).

Figure 1 Alar pattern of Mahanarva spectabilis collected in sugarcane fields. 

Source: DINARDO-MIRANDA (2018).

Figure 2 Male genitalia of Mahanarva spectabilis

The species M. fimbriolata, M. posticata and M. spectabilis are present in sugarcane fields in northeastern Brazil. This study reported the first occurrence of M. spectabilis in sugarcane fields in the states of Piauí and Maranhão, Brazil.

FUNDING: This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) Finance Code 001.

ETHICAL APPROVAL: Not applicable.

AVAILABILITY OF DATA AND MATERIAL: The datasets analyzed during the current study are available from the corresponding author on reasonable request.

ACKNOWLEDGEMENTS:

We thank the Genetic Improvement Program for Sugarcane of UFPI (PMGCA-UFPI/RIDESA) for the support logistics in the field and the material made available for this research.

REFERENCES

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Received: April 11, 2018; Accepted: May 07, 2020

* Corresponding author: jayara.silva@ifpi.edu.br

CONFLICTS OF INTEREST: All authors declare that they have no conflict of interest.

AUTHORS’ CONTRIBUTIONS: Conceptualization and methodology: Silva, J.D.C.; França, S.M. de; Silva, P.R.R. Investigation: Silva, J.D.C.; França, S.M.; Alcântara Neto, F.; Silva, P.R.R.; Dinardo-Miranda, L.L.; Lopes, D.O.P. Writing — original draft, and writing — review & editing: Silva, J.D.C.; França, S.M.; Alcântara Neto, F.; Silva, P.R.R.

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