The taxonomic status of Xyonysius major (Berg) (Hemiptera: Lygaeidae), an occasional pest of sunflower in Brazil

  • Schaefer C
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Abstract

Specimens of a species of the orsilline genus Xyonysius have been collected on sunflower (Helianthus annuus) in Londrina, Paraná. The specimens appeared to be X. major (Berg), but this species has been synonymized with X. californicus (Stål). Here I show the two species should be considered distinct, at least until the concept "Xyonysius californicus" has been clarified. The sunflower lygaeid is X. major.Exemplares de uma espécie de Orsillinae do gênero Xyonysius foram coletados em girassol (Helianthus annuus) em Londrina, Paraná. Os exemplares parecem ser da espécie X. major (Berg), mas essa espécie foi colocada como sinônimo de X. californicus (Stål). Demonstra-se aqui que as duas espécies devem ser consideradas distintas, ao menos até que o conceito "Xyonysius californicus" seja esclarecido. Desta forma, o ligeídeo do girassol deve ser considerado X. major.

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Schaefer, C. W. (1998). The taxonomic status of Xyonysius major (Berg) (Hemiptera: Lygaeidae), an occasional pest of sunflower in Brazil. Anais Da Sociedade Entomológica Do Brasil, 27(1), 55–58. https://doi.org/10.1590/s0301-80591998000100007

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