Browsing by Author "Aguin-Pombo, D."
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- Arboridia erecta (Ribaut, 1931) (Hemiptera, Cicadellidae), a new leafhopper to the fauna of the Iberian Peninsula, and data on the distribution of Arboridia parvula (Boheman, 1845)Publication . Aguin-Pombo, D.The genus Arboridia comprises about fifteen species in Europe. Of these, only two species, A parvula and A. ribauti, had been recorded to Spain. This work reports Arboridia erecta for the first to the Iberian Peninsula. Food-plant associations, preferable habitats and data on distribution on the Northwest of Spain are provided for A. parvula and A. erecta.
- Bionomics and taxonomy of leafhopper Sophonia orientalis (Homoptera: Cicadellidae), a Pacific pest species in the Macaronesian ArchipelagosPublication . Aguin-Pombo, D.; Aguiar, A. M. Franquinho; Kuznetsova, V. G.The leafhopper Sophonia orientalis (Matsumura) (Homoptera: Cicadellidae) is native to Asia, but it has been recently introduced to the Hawaii Archipelago, CA and French Polynesia. Although this extremely polyphagous species is considered to be a threat to all native plants of Hawaii and to many economically important cropping cultures, its taxonomy remains obscure. Most literature referred to this species as Sophonia rufofascia (Kuoh & Kuoh), but recently it has been shown that previous records of this species correspond to S. orientalis. In this study, S. orientalis is recorded from northeastern Atlantic archipelagos of Madeira and Canaries, with the Þrst collection made in 2000 representing the Þrst record of this species for Macaronesia. Diagnosis of the species together with information on the karyotype and structure of testes and ovaries is given. The number of chromosomes is 2n 16 X0 (males) and 2n 16 XX (females), and each testis and ovaryis composed of six follicles and six ovarioles, respectively. In Madeira, S. orientalis was found on 28 plant species, including native and endemic plants, but it also was associated with important crops such as vineyards. The presence of adults and nymphs during most of the year suggests that this species has several annual generations. Owing to the suitable climate and the presence of a great number of host plants, its potential for detrimental effects to Madeira ecosystems is considered to be great, and the proximity of Madeira and Canary Islands to the European land mass suggests that this pest may spread.
- Cuatro cigarrillas de la subfamilia Typhlocybinae (Homoptera, Cicadellidae) nuevas para la fauna españolaPublication . Aguin-Pombo, D.Los Tiflocíbinos son un grupo de insectos fitófagos poco conocidos en la Península Ibérica. Hasta ahora han sido citadas solamente unas setenta especies de cigarrillas. Del estudio del material recogido principalmente en el noroeste de España han resultado cua tro cigarrillas nuevas para la fauna española pertenecientes a la tribu Typhlocibini. De estas, dos especies son nuevas para la Península: Wagneripteryx germari (Zetterstedt, 1840) y Edwardsiana hippocastani (Edwards, 1888); las otras dos: Eurhadina ribauti Wagner, 1935 y Eupteryx filicum (Newman, 1853), son dos citas nuevas para España. Para cada especie se incluye información sobre su distribución, biología y plantas nutricias.
- A cultura do castanheiroPublication . Aguin-Pombo, D.; Arraiol, A.; Guerreiro, J.; Sardinha, D.; Silva, A.; Franquinho-Aguiar, A. M.
- Distribution, food plants and control of Asymmetrasca decedens (Paoli, 1932) (Hemiptera: Cicadellidae)Publication . Freitas, N.; Aguin-Pombo, D.Asymmetrasca decedens is a polyphagous species and a pest of many cultivated plants. Although it is mainly distributed in the Mediterranean region, recently it has been reported also from Madeira Island. So far here it has been found mainly in southern
- The drosophilids (Diptera: Drosophilidae) from a Laurisilva patch in Madeira with two new records for this islandPublication . Aguin-Pombo, Dora; Boieiro, M.; Gonçalves, Y.; Menezes, D.; Aguin-Pombo, D.; Capela, R.The drosophilid fauna of Madeira consists of 20 species from 6 different genera, including one endemic species, Drosophila madeirensis Monclús, 1984. In spite of several studies on Madeira drosophilids, little is known on the spatial distribution and phenology of most species, particularly of those associated to the native laurel forest. In this study, the drosophilid fauna of a Laurisilva patch was studied over an 18-month period in Chão da Ribeira (Seixal, northern Madeira) using several sampling techniques. As a result of this study, seventeen species were recorded including two new records for Madeira: Drosophila phalerata (Meigen, 1830) and Lordiphosa n. sp., a new unnamed species. The current knowledge of Madeiran drosophlid fauna is also briefly discussed.
- Genetic differentiation among host-associated Alebra leafhoppers (Hemiptera: Cicadellidae)Publication . Aguin-Pombo, D.The limited importance ascribed to sympatric speciation pro cesses via host race formation is partially due to the few cases of host races that have been reported among host populations. This work sheds light on the taxonomy of Alebra leafhoppers and examines the possible existence of host races among host-associated populations. The species of this genus show varying degrees of host association with deciduous trees and shrubs and, frequently, host popu lations of uncertain taxonomic status coexist and occasion ally become pests. Allozyme electrophoresis of 21 Greek populations including sympatric, local and geographically distant samples collected on 13 different plant species, show that they represent at least five species: A. albostriella Falle´n, A. viridis (Rey) (sensu Gillham), A. wahlbergi Bo Keywords: host races; leafhoppers; sympatric speciation; sibling species; allozymes; Alebra Introduction Sympatric speciation is a controversial subject in evol utionary biology (see Mayr, 1963; Futuyma and Mayer, 1980; Paterson, 1981; Via, 2001). One of the reasons for this controversy is that sympatric speciation seems to be an extremely rare phenomenon occurring only in very few groups of taxa, represented chiefly by phytophagous insects (Tauber and Tauber, 1977; Menken, 1981; Wood, 1993; Emelianov et al, 1995; Via, 1999; Finchak et al, 2000; Craig et al, 2001). The limited number of reported cases among organisms with sexual reproduction can be at least partially attributed to the fact that taxa undergoing sympatric speciation events must fulfill very restrictive biological and ecological requirements. Most sympatric speciation models demand that there is intraspecific genetic variation in traits that differentially affect the fitness of individuals that colonise new habitats or hosts (Dieckman and Doebeli, 1999; Hawthorne and Via, 2001 but see Higashi et al, 1999 and Takimoto et al, 2000). They assume that selection acting on these traits can prevent genetic exchange between populations (Bush, 1975; Tauber and Tauber, 1977; Diehl and Bush, 1989). In phytophagous insects, this means that host pref erences must be genetically determined and mating should occur on the host (Bush, 1975; Diehl and Bush, Correspondence: D Aguin-Pombo, Department of Biology, University of Madeira, Campus Universitario da Penteada, 9000 Funchal, Madeira, Portugal. E-mail: aguin uma.pt Received 12 December 2000; accepted 13 December 2001 heman and two new species. Of these, one is associated to Quercus frainetto and other is specific to Crataegus spp. Significant genetic differences among sympatric and local host populations were found only in A. albostriella, between populations on Turkey oak, beech and common alder. It is suggested that the last two of these host populations may represent different host races. The results show that both the host plant and geographical distance affect the patterns of differentiation in the genus. The formation of some spec ies seems to have been the result of allopatric speciation events while, for others, their origin can be equally explained either by sympatric or allopatric speciation.
- Hauptidia lapidicola (Vidano 1964), first record for Spain and data on the Iberian distribution of Hauptidia maroccana (Melichar 1907)(Hemiptera: Cicadellidae)Publication . Aguin-Pombo, D.; Baena, M.Species of the genus Hauptidia are associated to herbaceous plants. In Spain only two species of this genus are known: H. distinguenda (Kirschbaum, 1868) and H. maroccana (Melichar, 1907). In the study of material from northern and southern Spain, a little known species was found: H. lapidicola (Vidano, 1964). This leafhopper, found so far only in Portugal and Italy, is a new record for the Spanish fauna. Data on distribution, ecology and host plants for this species and Hauptidia maroccana are given in this work.
- A new species of the planthopper genus Conosimus associated with an endemic shrub in southern SpainPublication . Gnezdilov, V. M.; Aguin-Pombo, D.The poorly-known genus Conosimus Mulsant et Rey, 1855 (Hemiptera: Fulgoroidea: Issidae) includes six species and is briefly reviewed. Adults and fifth instars of a new species, Conosimus baenai n. sp., are described and compared with other species in the genus. The new species is associated with an endemic shrub, Echinospartum boissieri, in Jaen, Spain, in the south of the Iberian Peninsula, one of the richest botanical areas of the Mediterranean Basin.
- On the presence of some species of the genus Wagneriala Anufriev, 1970 (Hemiptera, Cicadellidae) in Spain and GreecePublication . Aguin-Pombo, D.The genus Wagneriala includes small leafhoppers associated mainly to grasses. Four species are currently known ¡n Europe but only one of these, W. sinuata, is known from Spain and Greece. This work reports for the fírst time the presence of W. incisa and W. pahtstris in the Iberian Península and W. incisa in Greece. For these little known species it has been compilad information 011 food plant associations and distribution.