Diversas intervenções antrópicas na natureza transformam as paisagens, além de comprometer a exis... more Diversas intervenções antrópicas na natureza transformam as paisagens, além de comprometer a existência de determinadas espécies, ocasionando o surgimento de fragmentos florestais. O vale do Taquari não possui Unidades de Conservação, o que demonstra a relevância, para o resgate da conservação ambiental da região, da existência do Jardim Botânico do Município de Lajeado-RS, local onde desenvolveu-se o estudo num transecto de 5 metros de largura por 50 metros de comprimento, com o objetivo de verificar a influência do efeito de borda sobre a diversidade e abundância de epífitas vasculares. Os dados coletados evidenciaram a presença de quatro famílias de epífitas: Bromeliacea, Cactaceae, Orchidaceae e Polypodiaceae, demonstrando que a temperatura, a umidade do ar, e o efeito de borda, influenciam diretamente na abundância e diversidade de epífitas. Palavras-chave: Efeito de Borda. Epifitísmo. Forófitos.
This study aims to describe the arboreal and soil ant fauna and compare the diversity of this gro... more This study aims to describe the arboreal and soil ant fauna and compare the diversity of this group in native forest and eucalypt plantation in the municipality of Capitão, Rio Grande do Sul. Ants were analyzed once a month between August and December 2008. We found 20 morphospecies of ants belonging to 6 subfamilies, 11 tribes and 14 genera, with 833 individuals in native vegetation and 1020 in eucalypt plantation. Azteca sp., Solenopsis sp.1, Crematogaster sp.1 and sp.2 and Labidus sp. were exclusive of native vegetation while Acromyrmex sp. and Atta sp. were exclusive of the eucalypt plantation. The Margalef (DMg) index showed a relatively low diversity of individuals for the sites studied, what requires further studies of the taxonomy and ecology of ants in this region for a longer time and with a larger number of samples. Keywords: Native Forest. Eucalyptus. Ecology of Ants. Pit-fall.
This survey had the aim to identify the mite fauna and mite ecologic interaction in rice culture,... more This survey had the aim to identify the mite fauna and mite ecologic interaction in rice culture, harvest 2010-2011, in Taquari and Cachoeirinha Counties, state of Rio Grande do Sul, Brazil. The mite population was biweekly evaluated on IRGA 424 and INTA PUITÁ CL cultivars in four areas where randomly sampled 20 plants/area. Fluctuation, ecologic indices and correlation between species and environmental factors were calculated. A total of 1,626 mites belonging to 14 species from 12 families were collected. Of the total specimens collected, 34.56% was on IRGA 424, in Taquari, 32.47% on IRGA 424-120 and 28.35% on IRGA 424-60, in Cachoeirinha and 4.61% on INTA PUITÁ CL, in Taquari. Family Ascidae showed great richness, with four species, Lasioseius sp., Lasioseius sp., Proctolaelaps sp. and Cheiroseius sp.. Schizotetranychus oryzae Rossi de Simons (86.65%) was the phytophagous mite more abundant, while among the predators Neoseiulus paraibensis (Moraes and McMurtry) (6.88%) stood out. ...
Typhlodromus (Anthoseius) sabelisi n. sp., a member of the rhenanus species group, is described f... more Typhlodromus (Anthoseius) sabelisi n. sp., a member of the rhenanus species group, is described from the State of Rio Grande do Sul, in southern Brazil, based on specimens collected from house dust removed from a curtain using a vacuum cleaner. So far, only Typhlodromus (Anthoseius) ornatus (Denmark & Muma, 1973) and T. (A.) transvaalensis (Nesbitt, 1951) have been reported from the State of Rio Grande do Sul. A key to the species of Typhlodromus (Anthoseius) De Leon reported in Brazil is provided.
Tydeid and triophtydeid mites (Acari: Tydeoidea) associated with grapevine (Vitaceae: Vitis spp.)... more Tydeid and triophtydeid mites (Acari: Tydeoidea) associated with grapevine (Vitaceae: Vitis spp.) in Brazil, with the descriptions of species of Prelorryia (André, 1980) and Tydeus Koch, 1835 Abstract We report on the Tydeidae and Triophtydeidae associated with grapevine (Vitis labrusca L. and Vitis vinifera L.) in Rio Grande do Sul State, Brazil, and describe a new species of Prelorryia, Prelorryia labrusca sp. nov., and two new species of Tydeus, Tydeus manoi sp. nov. and Tydeus riopardensis sp. nov. Brachytydeus formosa (Cooreman), B. podocarpa (Baker), Neolorryia pandana (Baker), Tydeus californicus (Banks), Pretydeus henriandrei Kaźmierski and Triophtydeus lebruni (André) are recorded and illustrated. A key to species of Tydeidae and Triophtydeidae from Brazil is provided.
Neocunaxoides promatae sp. nov., Bonzia flechtmanni sp. nov. and Dactyloscirus multiscutus sp. no... more Neocunaxoides promatae sp. nov., Bonzia flechtmanni sp. nov. and Dactyloscirus multiscutus sp. nov. are described from soil and leaf litter in Atlantic rainforest and Atlantic Araucaria forest in natural environments in São Francisco de Paula municipality, Rio Grande do Sul State, Brazil. In addition, the species Pulaeus quadrisolenidius Castro & Den Heyer 2009 and Lupaeus lectus Castro & Den Heyer (2009) are registered for the first time in this State.
The occurrence and the damage caused for the European red spider mite Panonychus ulmi (Koch) asso... more The occurrence and the damage caused for the European red spider mite Panonychus ulmi (Koch) associated to the culture of the grapevine are described. The collections had been carried through in 2005-2006 seasons in Vitis vinifera L. of cultivating Merlot in Bento Gonçalves and Candiota counties, in the state of Rio Grande do Sul, Brazil. The infested leaves had presented bronzing, with spots redly in the adaxial face resulting in the premature fall. This is the first register of the European red mite damaging the culture of the grapevine in Rio Grande do Sul.
... lose shininess, show tiny chlorotic spots on the upper side and may bear large numbers of mit... more ... lose shininess, show tiny chlorotic spots on the upper side and may bear large numbers of mite exuviae, that give the leaves a dusty aspect; later ... Yothers, 1924; Gerson et al., 1979; Hall et al., 1980; Samson et al., 1980; Cabrera et al., 1987; Zoebisch et al., 1992; McCoy, 1996). ...
Knowledge of the behaviour and feeding habits of tydeid mites is fragmentary. To address this lac... more Knowledge of the behaviour and feeding habits of tydeid mites is fragmentary. To address this lack of knowledge, the biology of Tydeus californicus (Banks) was studied on Inga marginata L. (Fabaceae) leaves with and without pollen of Typha angustifolia L. (Typhaceae) under laboratory conditions. The study started with 32 larvae isolated in experimental units, with 16 having access to pollen and 16 on I. marginata leaves without pollen. The experimental units were maintained at 25 ± 1ºC and 75 ± 5% relative humidity with a 12-h photophase. Immature stages were evaluated three times a day and the subsequent adult stage once a day. The data showed that when Tyd. californicus did not have access to pollen they did not reach adulthood. Additionally, we report thelytoky and larviparity in this mite.
Soybeans (Glycine max (L.) Merril) (Fabaceae) are the most important grain crop in Rio Grande do ... more Soybeans (Glycine max (L.) Merril) (Fabaceae) are the most important grain crop in Rio Grande do Sul State, Brazil. Recently, significant infestations of phytophagous mites were observed in different regions of this state. This research aimed to identify the mite fauna associated with the soybean crop grown in the northwestern region of Rio Grande do Sul, particularly in Três de Maio and Mato Queimado counties. Assessments were made fortnightly in transgenic soybeans with irrigation (L1A) and without irrigation (L2A and B), in conventional soybeans without irrigation (L3C and D), and in edge plants (L1, 2 and 3). In soybean plants, we found 18,100 mites belonging to five families, nine genera and 12 species, besides those of Oribatida. Area L1A showed higher richness and abundance, with 10 species, followed by area L2B with insecticide application, with nine species. Lower richness was observed in L2A, with five species, and L3D showed lower abundance. Phytoseiidae showed higher richness, with five species, followed by Tetranychidae, with four species. Tetranychus urticae Koch, Mononychellus planki McGregor and Tetranychus ludeni Zacher were the most common phytophagous mites on soybean plants. Neoseiulus idaeus Denmark & Muma, Pseudopronematus sp., N. californicus McGregor and N. anonymus Chant & Baker. N. idaeus were the most common predators. On edge plants, T. ludeni and T. urticae were the most abundant, while N. idaeus and Agistemus riograndensis Johann & Ferla stood out among the predatory mites.
Neste artigo é descrita ocorrência e o dano causado pelo ácaro vermelho europeu Panonychus ulmi (... more Neste artigo é descrita ocorrência e o dano causado pelo ácaro vermelho europeu Panonychus ulmi (Koch) associado à cultura da videira. As coletas foram realizadas na safra 2005-2006 em Vitis vinifera L. da cultivar Merlot, nos municípios de Bento Gonçalves e Candiota, no Estado do Rio Grande do Sul, Brasil. As folhas infestadas apresentaram bronzeamento, com manchas avermelhadas na face adaxial, resultando na queda prematura das mesmas. Esse é o primeiro registro do ácaro vermelho europeu danificando a cultura da videira no Rio Grande do Sul. Palavras-chave: Acari, uva, uva vinífera, Vitaceae. ABSTRACT The occurrence and the damage caused for the European red spider mite Panonychus ulmi (Koch) associated to the culture of the grapevine are described. The collections had been carried through in 2005-2006 seasons in Vitis vinifera L. of cultivating Merlot in Bento Gonçalves and Candiota counties, in the state of Rio Grande do Sul, Brazil. The infested leaves had presented bronzing, with spots redly in the adaxial face resulting in the premature fall. This is the first register of the European red mite damaging the culture of the grapevine in Rio Grande do Sul.
Sociedade Brasileira de Zoologia | www.sbzoologia.org.br | www.scielo.br/zool All content of the ... more Sociedade Brasileira de Zoologia | www.sbzoologia.org.br | www.scielo.br/zool All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY-NC. ABSTRACT. Neoseiulus HUGHES, 1948 is currently one of the largest genus of Phytoseiidae Berlese. Neoseiulus demitei sp. nov., a new species of phytoseiid mite from Rio Grande do Sul State, Brazil, is illustrated and described based on specimens collected on Tibouchina sp. (Melastomataceae) plants. This new species differs from others by having most of propodossomal setae reaching the base of nearby setae and a constriction of ventrianal shield at level of preanal pores. Nevertheless, this new species is the first of the species subgroup kennetti described from Brazil. A key of Neoseiulus species reported in Brazil is also included.
Biologia de Neoseiulus californicus alimentando-se de ácaro rajado. Tetranychus urticae (Koch) de... more Biologia de Neoseiulus californicus alimentando-se de ácaro rajado. Tetranychus urticae (Koch) destaca-se por ser um ácaro polífago. Em morangueiro, esse ácaro desenvolve-se na face inferior das folhas, causando lesão significativa. Este estudo teve por objetivo conhecer as características biológicas de Neoseiulus californicus (McGregor), proveniente de plantas de morangueiro cultivado. O estudo iniciou-se com trinta ovos individualizados em arenas com diferentes estágios de T. urticae como alimento. A duração média de ovo-adulto foi maior para fêmeas (5,69±0.08) do que para machos (5,35±0.11). A razão sexual foi de 0,66 e capacidade inata de aumento (rm) foi de 0,15 fêmea/fêmea/dia. A taxa líquida de reprodução (R o ) foi 17,10 vezes/geração, com uma média a cada geração (T) de 19,35 dias. Maior oviposição foi observada no 11º dia após o seu início, com 2,7 ovos/fêmea/dia e a média foi de 38,14±5,58 ovos/fêmea. A razão finita de aumento (λ) foi 1,41 fêmea/ dia. Neoseiulus californicus mostrou reproduzir-se adequadamente quando alimentado com T. urticae.
Phytoseius litoralis n. sp., a member of the horridus species group, is described from the State ... more Phytoseius litoralis n. sp., a member of the horridus species group, is described from the State of Rio Grande do Sul, in southern Brazil, based on specimens collected on Psidium guajava, Solanum concinnum and Cecropia pachystachya. This is the first species of the horridus group described from Brazil. A key to species of Phytoseius reported from Brazil is provided.
A new genus, Ingaseius nov. gen., and a new species, Ingaseius silvaticus nov. sp., Phytoseiidae,... more A new genus, Ingaseius nov. gen., and a new species, Ingaseius silvaticus nov. sp., Phytoseiidae, collected from Inga edulis Martius and Inga marginata Wild. (Fabaceae) are described from the Brazilian Atlantic Forest. This species is unique in the following characteristics: females and males with few teeth on fixed cheliceral digit and short Jv5, without J2, Z1 and leg macrosetae. In addition, females lack Jv3 and Zv3, and have a reduced ventrianal shield.
Diversas intervenções antrópicas na natureza transformam as paisagens, além de comprometer a exis... more Diversas intervenções antrópicas na natureza transformam as paisagens, além de comprometer a existência de determinadas espécies, ocasionando o surgimento de fragmentos florestais. O vale do Taquari não possui Unidades de Conservação, o que demonstra a relevância, para o resgate da conservação ambiental da região, da existência do Jardim Botânico do Município de Lajeado-RS, local onde desenvolveu-se o estudo num transecto de 5 metros de largura por 50 metros de comprimento, com o objetivo de verificar a influência do efeito de borda sobre a diversidade e abundância de epífitas vasculares. Os dados coletados evidenciaram a presença de quatro famílias de epífitas: Bromeliacea, Cactaceae, Orchidaceae e Polypodiaceae, demonstrando que a temperatura, a umidade do ar, e o efeito de borda, influenciam diretamente na abundância e diversidade de epífitas. Palavras-chave: Efeito de Borda. Epifitísmo. Forófitos.
This study aims to describe the arboreal and soil ant fauna and compare the diversity of this gro... more This study aims to describe the arboreal and soil ant fauna and compare the diversity of this group in native forest and eucalypt plantation in the municipality of Capitão, Rio Grande do Sul. Ants were analyzed once a month between August and December 2008. We found 20 morphospecies of ants belonging to 6 subfamilies, 11 tribes and 14 genera, with 833 individuals in native vegetation and 1020 in eucalypt plantation. Azteca sp., Solenopsis sp.1, Crematogaster sp.1 and sp.2 and Labidus sp. were exclusive of native vegetation while Acromyrmex sp. and Atta sp. were exclusive of the eucalypt plantation. The Margalef (DMg) index showed a relatively low diversity of individuals for the sites studied, what requires further studies of the taxonomy and ecology of ants in this region for a longer time and with a larger number of samples. Keywords: Native Forest. Eucalyptus. Ecology of Ants. Pit-fall.
This survey had the aim to identify the mite fauna and mite ecologic interaction in rice culture,... more This survey had the aim to identify the mite fauna and mite ecologic interaction in rice culture, harvest 2010-2011, in Taquari and Cachoeirinha Counties, state of Rio Grande do Sul, Brazil. The mite population was biweekly evaluated on IRGA 424 and INTA PUITÁ CL cultivars in four areas where randomly sampled 20 plants/area. Fluctuation, ecologic indices and correlation between species and environmental factors were calculated. A total of 1,626 mites belonging to 14 species from 12 families were collected. Of the total specimens collected, 34.56% was on IRGA 424, in Taquari, 32.47% on IRGA 424-120 and 28.35% on IRGA 424-60, in Cachoeirinha and 4.61% on INTA PUITÁ CL, in Taquari. Family Ascidae showed great richness, with four species, Lasioseius sp., Lasioseius sp., Proctolaelaps sp. and Cheiroseius sp.. Schizotetranychus oryzae Rossi de Simons (86.65%) was the phytophagous mite more abundant, while among the predators Neoseiulus paraibensis (Moraes and McMurtry) (6.88%) stood out. ...
Typhlodromus (Anthoseius) sabelisi n. sp., a member of the rhenanus species group, is described f... more Typhlodromus (Anthoseius) sabelisi n. sp., a member of the rhenanus species group, is described from the State of Rio Grande do Sul, in southern Brazil, based on specimens collected from house dust removed from a curtain using a vacuum cleaner. So far, only Typhlodromus (Anthoseius) ornatus (Denmark & Muma, 1973) and T. (A.) transvaalensis (Nesbitt, 1951) have been reported from the State of Rio Grande do Sul. A key to the species of Typhlodromus (Anthoseius) De Leon reported in Brazil is provided.
Tydeid and triophtydeid mites (Acari: Tydeoidea) associated with grapevine (Vitaceae: Vitis spp.)... more Tydeid and triophtydeid mites (Acari: Tydeoidea) associated with grapevine (Vitaceae: Vitis spp.) in Brazil, with the descriptions of species of Prelorryia (André, 1980) and Tydeus Koch, 1835 Abstract We report on the Tydeidae and Triophtydeidae associated with grapevine (Vitis labrusca L. and Vitis vinifera L.) in Rio Grande do Sul State, Brazil, and describe a new species of Prelorryia, Prelorryia labrusca sp. nov., and two new species of Tydeus, Tydeus manoi sp. nov. and Tydeus riopardensis sp. nov. Brachytydeus formosa (Cooreman), B. podocarpa (Baker), Neolorryia pandana (Baker), Tydeus californicus (Banks), Pretydeus henriandrei Kaźmierski and Triophtydeus lebruni (André) are recorded and illustrated. A key to species of Tydeidae and Triophtydeidae from Brazil is provided.
Neocunaxoides promatae sp. nov., Bonzia flechtmanni sp. nov. and Dactyloscirus multiscutus sp. no... more Neocunaxoides promatae sp. nov., Bonzia flechtmanni sp. nov. and Dactyloscirus multiscutus sp. nov. are described from soil and leaf litter in Atlantic rainforest and Atlantic Araucaria forest in natural environments in São Francisco de Paula municipality, Rio Grande do Sul State, Brazil. In addition, the species Pulaeus quadrisolenidius Castro & Den Heyer 2009 and Lupaeus lectus Castro & Den Heyer (2009) are registered for the first time in this State.
The occurrence and the damage caused for the European red spider mite Panonychus ulmi (Koch) asso... more The occurrence and the damage caused for the European red spider mite Panonychus ulmi (Koch) associated to the culture of the grapevine are described. The collections had been carried through in 2005-2006 seasons in Vitis vinifera L. of cultivating Merlot in Bento Gonçalves and Candiota counties, in the state of Rio Grande do Sul, Brazil. The infested leaves had presented bronzing, with spots redly in the adaxial face resulting in the premature fall. This is the first register of the European red mite damaging the culture of the grapevine in Rio Grande do Sul.
... lose shininess, show tiny chlorotic spots on the upper side and may bear large numbers of mit... more ... lose shininess, show tiny chlorotic spots on the upper side and may bear large numbers of mite exuviae, that give the leaves a dusty aspect; later ... Yothers, 1924; Gerson et al., 1979; Hall et al., 1980; Samson et al., 1980; Cabrera et al., 1987; Zoebisch et al., 1992; McCoy, 1996). ...
Knowledge of the behaviour and feeding habits of tydeid mites is fragmentary. To address this lac... more Knowledge of the behaviour and feeding habits of tydeid mites is fragmentary. To address this lack of knowledge, the biology of Tydeus californicus (Banks) was studied on Inga marginata L. (Fabaceae) leaves with and without pollen of Typha angustifolia L. (Typhaceae) under laboratory conditions. The study started with 32 larvae isolated in experimental units, with 16 having access to pollen and 16 on I. marginata leaves without pollen. The experimental units were maintained at 25 ± 1ºC and 75 ± 5% relative humidity with a 12-h photophase. Immature stages were evaluated three times a day and the subsequent adult stage once a day. The data showed that when Tyd. californicus did not have access to pollen they did not reach adulthood. Additionally, we report thelytoky and larviparity in this mite.
Soybeans (Glycine max (L.) Merril) (Fabaceae) are the most important grain crop in Rio Grande do ... more Soybeans (Glycine max (L.) Merril) (Fabaceae) are the most important grain crop in Rio Grande do Sul State, Brazil. Recently, significant infestations of phytophagous mites were observed in different regions of this state. This research aimed to identify the mite fauna associated with the soybean crop grown in the northwestern region of Rio Grande do Sul, particularly in Três de Maio and Mato Queimado counties. Assessments were made fortnightly in transgenic soybeans with irrigation (L1A) and without irrigation (L2A and B), in conventional soybeans without irrigation (L3C and D), and in edge plants (L1, 2 and 3). In soybean plants, we found 18,100 mites belonging to five families, nine genera and 12 species, besides those of Oribatida. Area L1A showed higher richness and abundance, with 10 species, followed by area L2B with insecticide application, with nine species. Lower richness was observed in L2A, with five species, and L3D showed lower abundance. Phytoseiidae showed higher richness, with five species, followed by Tetranychidae, with four species. Tetranychus urticae Koch, Mononychellus planki McGregor and Tetranychus ludeni Zacher were the most common phytophagous mites on soybean plants. Neoseiulus idaeus Denmark & Muma, Pseudopronematus sp., N. californicus McGregor and N. anonymus Chant & Baker. N. idaeus were the most common predators. On edge plants, T. ludeni and T. urticae were the most abundant, while N. idaeus and Agistemus riograndensis Johann & Ferla stood out among the predatory mites.
Neste artigo é descrita ocorrência e o dano causado pelo ácaro vermelho europeu Panonychus ulmi (... more Neste artigo é descrita ocorrência e o dano causado pelo ácaro vermelho europeu Panonychus ulmi (Koch) associado à cultura da videira. As coletas foram realizadas na safra 2005-2006 em Vitis vinifera L. da cultivar Merlot, nos municípios de Bento Gonçalves e Candiota, no Estado do Rio Grande do Sul, Brasil. As folhas infestadas apresentaram bronzeamento, com manchas avermelhadas na face adaxial, resultando na queda prematura das mesmas. Esse é o primeiro registro do ácaro vermelho europeu danificando a cultura da videira no Rio Grande do Sul. Palavras-chave: Acari, uva, uva vinífera, Vitaceae. ABSTRACT The occurrence and the damage caused for the European red spider mite Panonychus ulmi (Koch) associated to the culture of the grapevine are described. The collections had been carried through in 2005-2006 seasons in Vitis vinifera L. of cultivating Merlot in Bento Gonçalves and Candiota counties, in the state of Rio Grande do Sul, Brazil. The infested leaves had presented bronzing, with spots redly in the adaxial face resulting in the premature fall. This is the first register of the European red mite damaging the culture of the grapevine in Rio Grande do Sul.
Sociedade Brasileira de Zoologia | www.sbzoologia.org.br | www.scielo.br/zool All content of the ... more Sociedade Brasileira de Zoologia | www.sbzoologia.org.br | www.scielo.br/zool All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY-NC. ABSTRACT. Neoseiulus HUGHES, 1948 is currently one of the largest genus of Phytoseiidae Berlese. Neoseiulus demitei sp. nov., a new species of phytoseiid mite from Rio Grande do Sul State, Brazil, is illustrated and described based on specimens collected on Tibouchina sp. (Melastomataceae) plants. This new species differs from others by having most of propodossomal setae reaching the base of nearby setae and a constriction of ventrianal shield at level of preanal pores. Nevertheless, this new species is the first of the species subgroup kennetti described from Brazil. A key of Neoseiulus species reported in Brazil is also included.
Biologia de Neoseiulus californicus alimentando-se de ácaro rajado. Tetranychus urticae (Koch) de... more Biologia de Neoseiulus californicus alimentando-se de ácaro rajado. Tetranychus urticae (Koch) destaca-se por ser um ácaro polífago. Em morangueiro, esse ácaro desenvolve-se na face inferior das folhas, causando lesão significativa. Este estudo teve por objetivo conhecer as características biológicas de Neoseiulus californicus (McGregor), proveniente de plantas de morangueiro cultivado. O estudo iniciou-se com trinta ovos individualizados em arenas com diferentes estágios de T. urticae como alimento. A duração média de ovo-adulto foi maior para fêmeas (5,69±0.08) do que para machos (5,35±0.11). A razão sexual foi de 0,66 e capacidade inata de aumento (rm) foi de 0,15 fêmea/fêmea/dia. A taxa líquida de reprodução (R o ) foi 17,10 vezes/geração, com uma média a cada geração (T) de 19,35 dias. Maior oviposição foi observada no 11º dia após o seu início, com 2,7 ovos/fêmea/dia e a média foi de 38,14±5,58 ovos/fêmea. A razão finita de aumento (λ) foi 1,41 fêmea/ dia. Neoseiulus californicus mostrou reproduzir-se adequadamente quando alimentado com T. urticae.
Phytoseius litoralis n. sp., a member of the horridus species group, is described from the State ... more Phytoseius litoralis n. sp., a member of the horridus species group, is described from the State of Rio Grande do Sul, in southern Brazil, based on specimens collected on Psidium guajava, Solanum concinnum and Cecropia pachystachya. This is the first species of the horridus group described from Brazil. A key to species of Phytoseius reported from Brazil is provided.
A new genus, Ingaseius nov. gen., and a new species, Ingaseius silvaticus nov. sp., Phytoseiidae,... more A new genus, Ingaseius nov. gen., and a new species, Ingaseius silvaticus nov. sp., Phytoseiidae, collected from Inga edulis Martius and Inga marginata Wild. (Fabaceae) are described from the Brazilian Atlantic Forest. This species is unique in the following characteristics: females and males with few teeth on fixed cheliceral digit and short Jv5, without J2, Z1 and leg macrosetae. In addition, females lack Jv3 and Zv3, and have a reduced ventrianal shield.
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