Corythaica cyathicollis (Costa, 1864), aspectos sistemáticos, biológicos e econômicos (Hemiptera, Tingidae)

Abstract

<abstract language="eng">The present work deals with the systematic, biological and economic problems related to Corythaica cyathicollis (Costa, 1864) (Hemip., Tingidae). In the first part are presented the generic characteristics of Corythaica and is discussed the status of the specific name. The validity of C. cyathicollis, as stated by DRAKE and his collaborators, was denied by MONTE in his last works, he considered the species as C. passiflorae. Even in the modern literature no agreement has been achieved and three names are still used (cyathicollis, passiflorae and planaris) to designate the same insect. In order to resolve definitively this problem, a Neotype is designed to fill the place of the missing type of C. cyathicollis. Also in the first parte is discussed the taxonomic value of both male and female genitalia. The whole male copulator apparatus is studied and are illustrated the genital capsules of 8 species of this genus. Special mention is made of the shape of the basal plates and the proportions of the segmental membrana. The female genitalia is studied based upon the work of FELDMAN & BAILEY (1952). In the second part the biological cycle of C. cyathicollis is carefully studied. Descriptions of the egg are done and the ways of oviposition. The number of eggs laid by the female was observed to be about 350, during a period of more than 45 days. The eclosion of the neanide I is illustrated in some of its phases and the 5 larval instars are described and illustrated. Ending this part are included the lists of parasites and predators observed as well as the plant hosts. The actual geographical distribution is presented, based chiefly on HURD (1945). The economic problems concerning this species are reported in the third part of the work, and the ways of control are discussed. An experiment was carried out involving 4 insecticides: Malathion and Parathion, commonly used against this "lace bug"; Toxaphene and Dimethoate (American Cyanamid 12.880), the last one is an insecticide recently introduced in Brazil and was not previously used for these purposes, but gave the best results and it is quite able to control these insects even on crops showing highly developed infestations

Introduction to True Bugs (Heteroptera) of the Neotropics

“…Very few species have been studied in the neotropics with regard to their biology, such as Corythaica cyathicollis (Costa) (Kogan 1960 ) and Leptopharsa heveae Drake and Poor (Cividanes et al 2004 ), both species of economic importance. The fi rst species is pest of several solanaceous plants, and the second damages rubber plants.…”

Lace Bugs (Tingidae)

“…Montemayor and Melo ( 2012 ) made a review of the Argentinean Corythaica where they describe new species, provide a key to the Argentinean Corythaica , and raised from synonymy C. passifl orae (Berg). Corythaica cyathicollis Costa is frequently mentioned in the literature as a major pest for several solanaceous crops (Kogan 1960 ;Neal and Schaefer 2000 ;Stonedahl et al 1992 ). Montemayor and Melo ( 2012 ) discussed the identity of C. cyathicollis Costa and mentioned that probably almost all the citations of C. cyathicollis in the literature do not refer to Costa's species and most likely pertain to C. monacha (Stål) or C. passifl orae (Montemayor & Melo 2012 ).…”

Efeito da adubação na população de Corythaica cyathicollis em berinjela, em função do período de coleta

“…De acordo com Vanetti (1982) e Castro et al (2004), o inseto, conhecido como percevejo-manchador, é encontrado em solanáceas cultivadas e silvestres, sendo considerado importante praga na região da baixada À uminense do Rio de Janeiro. E, segundo Kogan (1960) a berinjela é mais suscetível à Corythaica cyathicollis que outras solanáceas (tomateiro e batatinha), que se apresentaram quase isentas do inseto. A¿ rmou que, as culturas não-tratadas são altamente prejudicadas; quando não havia destruição total das plantas, havia uma queda acentuada na produção e as plantas de berinjela ¿ cavam enfraquecidas pelo ataque do inseto, ocorrendo doenças fúngicas e viroses.…”