Morfologia externa das ninfas e adultos de Ctenarytaina spatulata Taylor (Hemiptera, Psyllidae)

Abstract

ABSTRACT. External morphology of adults and nymphs of Ctenarytaina spatulata Taylor (Hemiptera, Psyllidae). Ctenarytaina spatulata Taylor, 1997 was introduced in Brazil in the 1990 in eucalyptus plantations. Due to the importance of the C. spatulata as an eucalyptus pest, this research was developed in order to study the external morphology of adults and nymphs, with special detail on the 5 th instar nymphs. Considerable differences were observed among the nymphal instars, mainly in respect to size and characters of the antennae, the legs and the apex of the abdomen. The adult external morphology was presented with details of the wing veins, the characteristics of the legs, antennae and the genitalia.KEYWORDS. Ctenarytaina spatulata, eucalyptus pest, morphology, Psyllidae.RESUMO. Morfologia externa das ninfas e adultos de Ctenarytaina spatulata Taylor (Hemiptera, Psyllidae). Ctenarytaina spatulata Taylor, 1997 foi introduzida no Brasil na década de 1990 em plantios de eucalipto. Devido a importância de C. spatulata como praga de eucalipto, o objetivo desta pesquisa foi estudar a morfologia externa do adulto e das ninfas, com detalhamento da ninfa de 5 o ínstar. Foram observadas diferenças marcantes entre os ínstares, principalmente quanto ao tamanho e os caracteres das antenas, das pernas e do ápice do abdômen. A morfologia externa dos adultos foi apresentada com detalhamento da venação, das características das pernas e da terminália.PALAVRAS-CHAVE. Ctenarytaina spatulata, morfologia, praga do eucalipto, Psyllidae.

A review of the introduced forest pests in Brazil

“…Attacked shoots show small necrotic lesions, proliferation of lateral shoots, and leaf distortions. In addition, C. spatulata produces large amounts of honeydew on which sooty molds can develop (Santana & Zanol, 2005). In Brazil, it is suspected that C. spatulata could be involved in a growth disorder of E. grandis called "seca dos ponteiros", characterized by lateral sprouting, foliar spots, cankers at petiole insertion, and tip dieback.…”

A new introduced species ofCtenarytaina (Hemiptera, Psylloidea) damaging cultivatedEucalyptus parvula (=parvifolia) in Europe

“…Known host plant families include Myrtaceae (including Agonis, Chamaelaucium, Eucalyptus, Leptospermum, Lophostemon, Syzygium and possibly Metrosidersos), Rutaceae, Theaceae and Onagraceae. Several of the Australian Myrtaceae-feeding species, C. eucalypti (Maskell), C. longicauda Taylor, and C. spatulata Taylor, have been introduced into nurseries and plantations across the world where eucalypts are grown commercially for timber production or ornamental foliage (Taylor 1997;Burckhardt 1998;Burckhardt et al 1999;Hodkinson 1999;Olivares 2000;Purvis et al 2002;Costanzi et al 2003;Valente et al 2004;Mansilla et al 2004;Perez Otero et al 2005;Santana & Zanol 2005). Larvae at high densities are particularly damaging to young shoots and foliage.…”