EXTERNAL CHARACTERISTICS USEFUL TO DISCRIMINATE THE SEXES OF THE BEETLE COSTALIMAITA LURIDA (LEFÈVRE 1891) (COLEOPTERA: CHRYSOMELIDAE, EUMOLPINAE)

Alexandre Arnhold, Jacques Hubert Charles DELABIE, Dinarte Gonçalves

Resumo


The aim of this study was to identify external morphological characteristics allowing sexual differentiation of imagos of the chrysomelid Costalimaita lurida, the most damaging defoliant beetle reported for eucalyptus in Brazil. A study of the external morphological characteristics of this beetle, such as the shape of abdominal urosternites, antennas, presence of tufts and body dimensions, was carried out in 25 adults per sex that were later dissected for gender confirmation. The median length and the pronotum width as well as the sum of the elytra base widths showed significant differences between males and females. Other differences were observed on the abdominal segments of C. lurida, and the dimorphism of the urosternites can be used for the sexing of males and females. Females also present a statistically larger average size than males.


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Referências


ANJOS, N.; MAJER, J.D. 2003. Leaf-eating beetles in Brazilian eucalypt plantations. School of Environmental Biology Bulletin, Perth, vol. 1, no. 23, p. 8-9.

ARNHOLD, A.; GONÇALVES, D., 2010. Ocorrência de Costalimaita lurida (Coleoptera: Chrysomelidae) em Eucalyptus spp. em Minas Gerais. Pesquisa Florestal Brasileira, Colombo, vol. 30, no.63, p.257-259.

BARTLET, E.; ROMANI, R.; WILLIAMS, I.H.; ISIDORO, N. 1999. Functional anatomy of sensory structures on the antennae of Psylliodes chrysocephala L. (Coleoptera: Chrysomelidae). International Journal of Insect Morphology and Embriology, Amsterdam, vol. 28, no. 4, p. 291-300.

BUTT, B.A.; CANTU, E., 1962. Sex Determination of Lepidopterous Pupae. United States: Department of Agriculture. Agricultural Research Service, Washington, 7 p.

FERNANDES, L.C.; ANJOS, N.; SILVEIRA, R.D. 2005.Dimorfismo sexual em Metaxyonicha angusta (Perty, 1832) (Coleoptera: Chrysomelidae). Acta Scientiarum Biological Sciences, Maringá, vol. 27, no. 2, p. 125-127.

FOX, C.W.; DUBLIN, L.; POLLITT, S.J. 2003. Gender differences in lifespan and mortality rates in two seed beetle species. Functional Ecology, Danvers, vol. 17, no. 5, p. 619-626.

MAFIA, R.G.; MENDES, J.E.P.; CORASSA, J.N. 2014. Análise comparativa dos surtos e danos causados pelos besouros desfolhadores Costalimaita ferruginea (Fabricius, 1801) e Costalimata lurida (Lefévre, 1891) (Coleoptera: Chrysomelidae) em plantios de eucalipto. Revista Árvore, Viçosa, vol. 28, no. 5, p. 829-836.

MARSARO-JÚNIOR, A.L.M.; PEREIRA, P.R.V.S.; PAIVA, W.R.S.C. 2006. Ocorrência de Costalimaita ferruginea (Coleoptera: Chrysomelidae) em citros no estado de Roraima. Embrapa Roraima, Boa Vista, 2 p. Comunicado Técnico, no. 10.

MELLINI, E. 1973. Sul riconoscimento esterno del sesso negli stadi preimmaginali degli insetti. Bollettino dell'Istituto di Entomologia della Università di Bologna, Bolonha, vol. 30, no. 1, p. 265-287.

PELLETIER, Y., 1993. A method for sex determination of the Colorado potato beetle pupa, Leptinotarsa decemlineata. Entomological News, Los Angeles, vol. 104, no. 1, p.140-142.

SALT, G.A., 1928. Study of Colaspis hypochlora, Lefèvre. Bulletin of Entomological Research, Canterbury, vol. 19, no. 1, p. 295-308.

SAVALLI, U.M.; FOX, C.W. 1998. Sexual selection and the fitness consequences of male body size in the seed beetle Stator limbatus. Animal Behaviour, Nottingham, vol.55, no.2, p. 473-483.

VILELA, E.F.; DELLA LUCIA, TMC. 2001. Feromônios de Insetos: Biologia, Química e Aplicação, 2da ed., Ribeirão Preto: Holos. 206 p.

WEBER, R.G. 1976. Sexing the elm leaf beetle, Pyrralta luteola (Coleoptera: Chrysomelidae). Annals of the Entomological Society of America, Lanham vol. 69, no. 2, p. 217-218.




DOI: https://doi.org/10.37856/bja.v94i1.3411

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