Sylvia M. Lucas

Instituto Butantan, San Paulo, São Paulo, Brazil

Are you Sylvia M. Lucas?

Claim your profile

Publications (27)27.05 Total impact

  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: In this study the Brazilian Amazonian species of Acanthoscurria Ausserer, 1871 are redescribed: A. geniculata (C.L. Koch, 1841), A. tarda Pocock, 1903, A. juruenicola Mello-Leitão, 1923, A. theraphosoides (Doleschall, 1871). Acanthoscurria simoensi Vol, 2000 and A. insubtilis Simon, 1892, previously known from French Guyana and Bolivia, respectively, are recorded for Brazil by the first time. The females of these two species are described for the first time and a new species, A. belterrensis sp. nov., is described from Belterra, Pará, Brazil. In addition, four synonymies are established: A. transamazonica Piza, 1972 as junior synonym of A. geniculata; A. ferina Simon, 1892 and A. brocklehursti F.O.P.-Cambridge, 1896 of A. theraphosoides; and A. xinguensis Timotheo da Costa, 1960 of A. juruenicola. Acanthoscurria belterrensis sp. nov. resembles A. gomesiana Mello-Leitão, 1923 by the color pattern and structure of sexual organs. The male can be distinguished by the less curved embolus and the very projected prolateral superior and prolateral inferior keels, giving a triangular aspect to the basis of embolus, and the female seminal receptacles presenting a larger and narrower basis.
    Zoologia (Curitiba Impresso) 02/2014; 31(1):63-80. · 0.66 Impact Factor
  • Source
    Zoologia (Curitiba Impresso) 08/2012; 29(4):375-379. · 0.66 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The study of type material and specimens of A. gomesiana of several Brazilian spider collections offered us the possibility to redescribe this species and consider synonyms of the first one of the following: A. violacea, A. pugnax, and A. aurita. Acanthoscurria cunhae and A. melanotheria are considered Species inquirendae, the types were not located, and the descriptions are not enough for identification of similar ones. We considered as valid only two species from the southeast of Brazil: A. paulensis and A. gomesiana. The distribution range of A. gomesiana is enhanced in the state of Minas Gerais, Brazil. Some data on natural history and phenology are presented.
    International Journal of Zoology 01/2012; 2012.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Acanthoscurria natalensis Chamberlin, 1917 is redescribed. The following species are considered junior synonyms of A. natalensis: A. cursor Chamberlin, 1917, A. fracta Chamberlin, 1917, A. rondoniae Mello-Leitão, 1923, A. chiracantha Mello-Leitão, 1923, and A. parahybana Mello-Leitão, 1926. All examined specimens, including the types, share the same general aspect, morphology of the sexual organs, color, and measurements. Acanthoscurria natalensis resembles A. paulensis Mello-Leitão, 1923 and A. chacoana Brèthes, 1909 in the general aspect, size, and by the morphology of the sexual organs: male palpal bulb with embolus ending like a shell, due to the prolateral and superior keels. It can be distinguished from these two species by the less developed keels and the longer embolus. The female resembles A. paulensis and A. chacoana by the fused base of the spermathecae and differs by the more evident lobes, projected from base. The distribution of A. natalensis is expanded to Brazilian states covering the Caatinga and the Cerrado biomes.
    Zoologia (Curitiba Impresso) 08/2011; 28(4):525-530. · 0.66 Impact Factor
  • Source
    Sylvia M. Lucas, Rafael P. Indicatti
    [Show abstract] [Hide abstract]
    ABSTRACT: Two new species of Lycinus Thorell, 1894 are described in this paper, L. portoseguro sp. nov. and L. choros sp. nov. Lycinus portoseguro sp. nov. is based on male and female from Porto Seguro, state of Bahia, Northeastern Brazil. This is the first record of a species of Lycinus from Brazil. Males of L. portoseguro sp. nov. differ from the remaining species of the genus by the presence of a retrolateral megaspine on tibia I and by the short embolus. Females can be distinguished by the scopulae divided on tarsi II. Lycinus choros sp. nov. is based on one male from La Serena, IV Region (Coquimbo), Chile. It is the eighth species described from this country. L. choros sp. nov. resembles L. epipiptus (Zapfe, 1963) by the longer embolus and differs from it by the short palpal tibia and by the scopulae undivided on male tarsi I-II.
    Zoologia (Curitiba Impresso) 01/2010; 27(3). · 0.66 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Até a presente data, o gênero Neostothis Vellard é conhecido somente pela espécie tipo Neostothis gigas Vellard 1925, descrita com base em um macho e algumas fêmeas da Reserva Biológica do Alto da Serra de Paranapiacaba, Santo André, São Paulo, Brasil. Os exemplares-tipo, que deveriam estar depositados na coleção do Instituto Butantan, estão perdidos. Exemplares machos e fêmeas de N. gigas, coletados na localidade-tipo, permitiram estabelecer um neótipo e melhorar o conhecimento do gênero e da espécie.
    Journal of Arachnology 01/2009; · 0.73 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The genus Magulla Simon 1892 is revalidated and redescribed. The female of the type species M. obesa Simon 1892 is redescribed and the male is described for the first time. Magulla janeirus (Keyserling 1891) is considered a valid species. Magulla symmetrica Bücherl 1949 is transferred to Plesiopelma Pocock 1901, and considered a junior synonym of P. insulare (Mello-Leitão 1923). Additionally, two new species are described from Brazil: M. buecherli n. sp. from Ilhabela, São Paulo and M. brescoviti n. sp. from São Francisco de Paula, Rio Grande do Sul.
    Zootaxa 11/2008; 1814(2008):21–36. · 1.06 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The spider family Theraphosidae Thorell, 1870 includes, to date, 906 species distributed throughout 112 genera (PLATNICK 2008). Of these, 57 are recorded from the Neotropical region with almost 500 species distributed throughout South America. These spiders are commonly known as "tarantulas" and are trade as pets. For most of these species, the biology, ecology and systematics are very poorly known (COSTA & PEREZ-MILES 1992, 2002, DIAS & BRESCOVIT 2003). In South America, the family is represented by three sub-families: Aviculariinae, Ischnocolinae and Theraphosinae. Theraphosinae and Ischnocolinae are the largest, comprising 52 genera. Aviculariinae includes only five genera: Avicularia Lamarck, 1818, Ephebopus Simon, 1892, Iridopelma Pocock, 1901, Pachistopelma Pocock, 1901 and Tapinauchenius Ausserer, 1871. Redescr Redescr Redescr Redescr Redescription and notes on the natur iption and notes on the natur iption and notes on the natur iption and notes on the natur iption and notes on the natural histor al histor al histor al histor al history of the arbor y of the arbor y of the arbor y of the arbor y of the arboreal tar eal tar eal tar eal tar eal tarantula antula antula antula antula Iridopelma Iridopelma Iridopelma Iridopelma Iridopelma seladonium seladonium seladonium seladonium seladonium (Ar (Ar (Ar (Ar (Araneae: aneae: aneae: aneae: aneae: T T T T Ther her her her hera a a a aphosidae: phosidae: phosidae: phosidae: phosidae: A A A A Avicular vicular vicular vicular viculariinae) iinae) iinae) iinae) iinae)
    Revista Brasileira de Zoologia 01/2008; 25(4):728-736. · 0.44 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Six mygalomorph spiders species belonging to two families, were collected in the Centro de Pesquisa e Conservação da Natureza Pró-Mata, São Francisco de Paula, state of Rio Grande do Sul, Brazil. Five of those species, five are new. Microstigmatidae: Xenonemesia araucaria sp. nov., males differ from those of X. platensis Goloboff, 1988 and X. otti Indicatti, Lucas & Brescovit, 2007 by the curved and very long embolus in the male palp. Females differ from the remaining species of the genus in the seminal receptacle very long and sinuous or twisted. Nemesiidae: Acanthogonatus ericae sp. nov. – males resemble those of A. tacuariensis (Pérez-Miles & Capocasale, 1982) and A. quilocura Goloboff, 1995 by the serrated, curved and long embolus but are distinguished by the presence of a flange on the apex of the embolus. Females differ from the remaining Acanthogonatus by the short copulatory ducts, arising from the apex of the basal dome. Stenoterommata arnolisei sp. nov. is distinguished from the remaining species of the genus by the large sub-apical area of bulb, with a great number of keels, extending to the median region in the male palp and by the long copulatory ducts and spermathecae arising from internal border of basal dome in the female genitalia. S. grimpa sp. nov.: males resemble those of S. arnolisei sp. nov. by the shape of the palpal bulb and by the short embolus, but differ in the keels, restricted to the apical region. Females differ from remaining Stenoterommata by the presence of two spermathecae in the rounded fused basal dome. S. curiy sp. nov.: males resemble those of S. grimpa sp. nov. by the shape of palpal bulb and the very short embolus, but differ by the translucid keels restricted to the larger distal region. The presence of S. palmar Goloboff, 1995 is confirmed for Brazil. Males of S. palmar are distinguished from the remaining species of the genus by the long, slender and slightly distally curved embolus. Females are distinguished by the single spermathecae arising from the basal third or median area of the long and triangular basal dome. All spiders were collected with pitfall trapping at six distinct areas (two Araucaria forest areas, two secondary forests and two Pinus spp. Silvicultural plantations) over a period of 20 months. Abundance data between areas was compared for S. arnolisei sp. nov. and X. araucaria sp. nov. based on the mean catches of spiders in each area. No clear habitat preference was shown for each of the species, suggesting broad habitat tolerances. Phenological data were obtained through the abundance in each trapping period; results suggest an overwintering reproductive pattern for S. arnolisei sp. nov. and a spring-summer pattern for X. araucaria sp. nov.
    Revista Brasileira de Zoologia 01/2008; 25(3). · 0.44 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Xenonemesia otti n. sp. (Microstigmatidae) is described from Viamão and X. platensis Goloboff newly recorded for the first time from Caçapava do Sul, both in the State of Rio Grande do Sul, Brazil.
    Zootaxa 08/2007; 1485(2007):43–49. · 1.06 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The genus Tmesiphantes Simon, 1892 is revised. The type-species, T. nubilus Simon, 1892, is redescribed and three new species are described from the state of Bahia, Brazil: T. amadoi sp. nov., T. bethaniae sp. nov. and T. caymmii sp. nov. In addition, Tmesiphanthes physopus Mello-Leitão, 1926 and T. minensis Mello-Leitão, 1943 are transferred to Plesiopelma Pocock, 1901. T. chickeringi is considered species inquirenda.
    Revista Brasileira de Zoologia 01/2007; 24(4). · 0.44 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The genus Guyruita gen. nov. and two new species from Brazil are described. Holothele waikoshiemi (Bertani & Araújo, 2005) from Venezuela is transferred here to the new genus. Guyruita gen. nov. differs from the remaining Ischnocolinae by the following features: labium densely occupied by a lot of cuspules (more than 100), intercheliceral intumescence absent, posterior sternal sigilla remote from margin, tarsal claws without teeth, tarsal scopula I-II undivided (tarsus II with a line of sparse setae, which does not divide the scopula), III-IV divided.
    Revista Brasileira de Zoologia 01/2007; 24(4). · 0.44 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: A new species of the genus Mecicobothrium is described, M. baccai n. sp., from Blumenau, State of Santa Catarina. This is the first record of the family Mecicobothriidae in Brazil.
    Zootaxa 03/2006; 1326:45-56. · 1.06 Impact Factor
  • Source
    Sylvia M. Lucas, Rafael P. Indicatti
    [Show abstract] [Hide abstract]
    ABSTRACT: The genus Psalistopoides Mello-Leitão, 1934, previously a junior synonym of Pselligmus Simon, 1892, is revalidated. Psalistopoides fulvimanus Mello-Leitão, 1934 is redescribed and new distribution records are presented. In addition, P. emanueli sp. nov. is described from the State of Paraná, Brazil.
    Revista Brasileira de Zoologia 01/2006; 23(2). · 0.44 Impact Factor
  • Source
    Rafael Prezzi Indicatti, Sylvia Marlene Lucas
    [Show abstract] [Hide abstract]
    ABSTRACT: The new genus Longistylus of the family Nemesiidae is described from the Brazilian Cerrado. Longistylus ygapema n. sp. is recognized by the male palp with a globose bulb and a slender embolus, two times longer the palpal tibia, slightly curved retrolaterally and with no keels.
    Zootaxa 09/2005; 1088:11-16. · 1.06 Impact Factor
  • Source
    Rafael Prezzi Indicatti, Sylvia Marlene Lucas
    [Show abstract] [Hide abstract]
    ABSTRACT: The new genus Longistylus of the family Nemesiidae is described from the Brazilian Cerrado. Longistylus ygapema n. sp. is recognized by the male palp with a globose bulb and a slender embolus, two times longer the palpal tibia, slightly curved retrolaterally and with no keels.
    Zootaxa 08/2005; 1088:11-16. · 1.06 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The venom of the scorpion Tityus costatus contains peptides toxic to humans but scarce information on their structure and function is available. Here, we report the separation of 50 different components by high performance liquid chromatography and the identification of approximately 90 distinct components by mass spectrometry analysis, with molecular weights varying from 413 to 45482 atomic mass units. Four peptides were fully sequenced: (i) a butantoxin-like peptide that blocks Shaker K+ channel; (ii) an insect toxin-like peptide; (iii) a scorpine-like peptide, and a short heptapeptide of unknown function. Fifteen peptides were directly sequenced at the N-terminal region, among which are components toxic to mice. A cDNA library was constructed and 13 clones were isolated and sequenced. Some of these peptides and genes are similar to other known scorpion toxins. Based on these results, stings by scorpions of the species Tityus costatus should be taken with caution by medical doctors.
    Toxicon 04/2005; 45(3):273-83. · 2.92 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Prorachias Mello-Leitão, 1924 is known only from its type-species Prorachias bristowei Mello-Leitão, described based on a female from the state of Rio de Janeiro, Brazil. The description is very short and incomplete and some important characters, such as the shape of the spermathecae, are omitted. The type specimen, that should be deposited in the collection of the Museu Nacional do Rio de Janeiro, was not located and is probably lost. Nevertheless, specimens collected by the project “Biodiversity of Arachnida and Myriapoda of the State of São Paulo” and deposited in the collection of the Butantan Institute enabled to improve the diagnosis of the genus as well as describe the species’ male. In addition, notes on the biology are presented and the distribution range is extended to the states of Goiás, Minas Gerais and São Paulo.
    Biota Neotropica 01/2005; 5. · 0.66 Impact Factor
  • Source
    Celina Yukari Fukami, Sylvia Marlene Lucas
    [Show abstract] [Hide abstract]
    ABSTRACT: The study of type and non-type material of species of the genus Idiops Perty, 1833, Southeastern Brazil, enabled to enhance the taxonomical knowledge of these species. Thus, Idiops montealegrensis Soares, 1944 is synonymized with Idiops camelus Mello Leitão, 1937; Idiops germaini Simon, 1892 described from Rio de Janeiro, Brazil, is confirmed as a valid species and Idiops pirassununguensis n. sp. is described from Pirassununga, São Paulo, Brazil. In addition, Idiops nilopolensis Mello Leitão, 1923, from Nilópolis, Rio de Janeiro is considered species inquirenda and new records are presented for Idiops camelus.
    Biota Neotropica 01/2005; 5. · 0.66 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Rhopalurus guanambiensis n. sp. is described from Guanambi, state of Bahia, northeastern Brazil. The new species is related to R. lacrau Lourenço & Pinto-da-Rocha, 1997 (Itaeté, state of Bahia) by having the same number of oblique rows of granules on the movable finger of the pedipalpal chela, same number of keels on metasomal segments I, III, IV, V and similar body size; it is related to R. crassicauda Di Caporiacco, 1947 (state of Roraima) by having the same number of keels on metasomal segments I, II, IV and V, last two metasomal segments darker colored and enlarged, and similar body size. It is distinguished from R. lacrau by the different color of the carapace, meso and metasomal segments IV-V, higher number of pectinal teeth and metasomal segment II with ten carinae; and from R. crassicauda by the lower number of oblique rows of granules on the movable finger of the pedipalp chela, metasomal segment III with eight carinae; segment V with vestigial keels and by the telson with a strong subaculear tubercle. The males of R. guanambiensis are distinguished from the female by having more robust pedipalp chelae and by the enlarged metasomal segments IV and V. This species raises the total number of species of the genus Rhopalurus in Brazil to nine.
    Biota Neotropica 01/2005; 5. · 0.66 Impact Factor

Publication Stats

120 Citations
27.05 Total Impact Points

Institutions

  • 2003–2012
    • Instituto Butantan
      San Paulo, São Paulo, Brazil
  • 2009
    • Federal Rural University of Rio de Janeiro
      Seropédica, Rio de Janeiro, Brazil
  • 1993–2005
    • Instituto Vital Brazil
      SRA, Rio Grande do Sul, Brazil