A new genus Novazelandiella (Acari, Oribatei, Hammeriellidae) is described. The type species, Pedrocortesella nigroclava Hammer, 1966, New Zealand, is redescribed from the holotype (Zoologisk Museum, Denmark) and from six specimens (Acarology Laboratory, USA) identified as being co-specific with the type material, after being confronted with it. Up to the present time, the new genus is monotypic and restricted to New Zealand, being close to the South American genus Hammeriella Paschoal.

A new genus Andesperuviella (Acari, Oribatei, Hammeriellidae) is described. The type species, Pedrocortesia dentata Hammer, 1961 is redescribed in detail. The genus, up to the present, is monotypic and restricted to the Peruvian Andes.

Hammeriella gen. n. and, Hammeriellidae fam. n. (Acari, Oribatei) from South America are described. Hammeriella is also recorded from "Tierra del Fuego" (Chile) and from Argentina. The type species of Hammeriella, Pedrocortesia grandis Hammer, is fully redescribed and the cogeneric species, Pedrocortesia australis Hammer, is diagnosed in comparison with the type species, both being transferred to Hammeriella. The redescriptions were made from syntypes deposited in the Zoologisk Museum of Copenhagen, sent on loan for this study.

A new genus Nooliodes is described and a new family Nooliodidae is proposed and characterized (Acari, Oribatei). The type species, Plateremaeus glaber Balogh, from Madagascar, is redescribed based on previous description and figures. The new genus is close to Octoliodes Paschoal, 1987 family Pheroliodidae Paschoal.

The present paper deals with the recharacterization of the Gymnodamaeoidea and the erection of Plateremaeoidea n. grad. (Acari, Oribatei). Gymnodamaeidae Grandjean, Aleurodamaeidae Paschoal & Johnston, and Idiodamaeidae Paschoal are recognised under the Gymnodamaeoidea. Plateremaeidae Tragardh, Pheroliodidae Paschoal, Nooliodidae Paschoal, Hammeriellidae Paschoal, Lyrifissellidae Paschoal, Pedrocortesellidae Paschoal, Licnodamaeidae Grandjean and Licnobelbidae Grandjean are included in Plateremaeoidea. A key to the families and genera of Gymnodamaeoidea and Plateremaeoidea is also provided.

Lyrifissella new genus and Lyrifissellidae new family (Acari, Oribatei) are described. The type species, Pedrocortesella latoclava Hammer, 1966, from Milford, New Zealand, is fully redescribed from the holotype. The congeneric species, Pedrocortesella cryptonota Hammer, 1966, Lake Ratoitis, New Zealand, is compared with the type species and transferred to the new genus. Plateremaeus vestitus Tragardh, 1931, the species thought to be very close to Plateremaeus ornatissimus (Berlese), and which was erroneously used to characterize Plateremaeus and Plateremaeidae, causing them to be misunderstood for about five decades, is now placed in Lyrifissella.

O gênero sul-americano Idiodamaeus Paschoal (com 3 espécies), é transferido dos Gymnodamaeidae, para constituir a família Idiodamaeidae, fam. n., aqui caracterizada.

The south American genus Idiodamaeus Paschoal (with 3 espécies) is removed from the Gymnodamaeidae, to constitute the family Idiodamaeidae, fam. n., herein characterized.

A Familia Pedrocortesellidae, fam. n., inclui os seguintes gêneros e espécies: Pedrocortesella Hammer, com as espéciei pulchra Hammer (Peru) e gymnonota Hammer (Nova Zelândia) que são redescritas; Pedrocortesella africana Pletzen (África do Sul), P. parva Pletzen (África do Sul), e P. hardyi Balogh (Nova Guiné) são consi eradas incertae sedis; e Hexachaetoniella, gen. n., com as espécies sexpilosa (Hammer), n. comb., a espécie-tipo, e japonica (Aoki & Suzuki), n. comb. (Japão).

The family Pedrocortesellidae, fam. n., includes the following genera and specie : Pedrocortesella Hammer, with the species: puchra Hammer (Peru) and gymnonota Hammer (New Zealand), which are redescribed; Pedrocortesella africana Pletzen (South Africa), P. parva Pletzen (South Africa) and P. hardyi Balogh (New Guinea) are considered incertae sedis: and Hexachaetoniella, gen. n., with the species sexpilosa (Hammer), n. comb., the type-species, and japonica (Aoki & Suzuki), n. comb. (Japan).

As famílias Licnodamaeidae e Licnobelbidae são recaracterizadas. Licnodamaeidae inclui apenas o gênero Licnodamaeus Grandjean, com as espécies: undulatus (Paoli), pulcherrimus (Paoli) e costula randjean, todas da Europa; o gênero Licnocepheus Woolley é removido de Licnodamaeidae. Licnobelbidae inclui também só um gênero, Licnobelba Grandjean, com as espécies: alestensis Grandjean, caesarea (Berlese) e montana Mihelcic, todas da Europa. Licnodamaeus granulatus Balogh & Csiszár (Argentina), Licneremaeus latiflabellatus Paoli e Licneremaeus tuberculatus Paoli (ambas da Itália) são consideradas incertae sedis.

The families Licnodamaeidae and Licnobelbi ee are recharacterized. Licnodamaeidae includes the sole genus Licnodamaeus Grandjean, with the species: undulatus (Paoli), pulcherrimus (Paoli) and costula Grandjean, all from Europe; the gen b Licnocepheus Woolley is removed from the family Licnodamaeidae. Licnobelbidae includes also one single genus: Licnobelba Grandjean, with the species: alestensis Grandjean, caesarea (Berlese) and montana Mihelcic, all from Europe. Licnodamaeus granulatus Balogh & Csiszár) (Argentina), Licneremaeus latiflabellatus Paoli and Licneremaeus tuberculatus Paoli (both from taly) are considered incertae sedis.

A nova família aqui descrita, Pheroliodidae, inclui os seguintes gêneros e espécies: Pheroliodes Grandjean (em cuja sinonímia vai incluído Pedrocortesia Hammer), com as seguintes espécies: casa-branquensis, sp. n. (Brasil, São Paulo, Casa Branca), pellitus, sp. n. (Brasil, São Paulo, Piracicaba), nemoricultricis, sp. n. (Brasil, São Paulo, Piracicaba), wehnekei (Willmann) (Guatemala, Venezuela), roblensis Covarrubias (Chile), mirabilis (Hammer), n. comb. (Argentina): Pedrocortesia elegans Hammer, P. intermedia Hammer, ambas do Peru, P. fissurata Balogh & Mahunka (Mongólia), inaequalis Balogh & Mahunka (Mongólia), franzi Balogh (Chad), P. africana Balogh (Quênia), P. vermicularis Balogh (Nova Guiné) e P. sculptrata Aoki (Coréia) são consideradas incertae sedis: Lopholiodes, gen. n., inclui as espécies mícropunctatum, sp. n., espécie-tipo (Brasil, São Paulo, Anhumas) e macropunctinatum. sp. n. (Brasil, São Paulo, Piracicaba): Octoliodes, gen. n., inclui as espécies luteomarginatus (Hammer), n. comb., a espécie-tipo (Nova elân da e rotoruensis (Hammer, n. comb. (Nova Zelândia): e Licnoliodes Grandjean, com as espécies: andrei Grandjean, espécie-tipo (Espanha e Argélia), adminensis Grandjean (Marrocos, Argélia, Espanha) e apunctatus Mahunka (Grécia).

The new family Pheroliodidae, herei nproposed, includes the following genera and species Pheroliodes Grandjean (in whose synonymy Pedrocortesia Hammer is placed), with the species: casa-branquensis, sp. n. (Brazil, São Paulo, Casa Branca), pellitus, sp. n. (Brazil, São Paulo, Piracicaba), nemoricultricis, sp. n. (Brazil, São Paulo, Piracicaba), wehnekei (Willmann) (Guatemala, Venezuela), roblensis Covarrubias (Chile), mirabilis (Hammer), n. comb. (Argentina): Pedrocortesia elegans Hammer, P. intermedia Hammer, both from Peru, P. fissurata Balogh & Mahunka and P. inaequalis Balogh & Mahunka, both from Mongolia, P. franzi Balogh (Chad), P. africana Balogh (Kenya), P. vermicularis Balogh (New Guinea) and P. sculptrata Aoki (Corea) are considered incertae sedis; Lopholiodes, gen. n., includes the species micropunctinatum, sp. n., the type-species (Brazil, São Paulo, Anhumas) and macropunctinatum, sp. n. (Brazil, São Paulo, Piracicaba): Octoliodes, gen n., includes the species leuteomarginatus (Hammer), n. comb., the type-species (New ealand) and rotoruensis (Hammer), n. comb. (New Zealand): and Licnoliodes Grandjean, with the species: andrei Grandjean, type-species (Spain and Algeria), adminensis Grandjean, type-species (Spain and Algeria), adminensis Grandjean (Maroc, Algeria, Spain) and apunctatus Mahunka (Greece).

A família Plateremaeidae é revista, e inclui os seguintes táxons: Plateremaeus Berlese, com a única espécie P. ornatissimus (Berlese), do Brazil; Allodamaeus Banks, com as espécies ewingi (Banks), dos Estados Unidos, coralgablensis, sp. n. (localidade-tipo: Estados Unidos, Flórida, Coral Gables) e ornatos Balogh & Csziszár, da Argentina; Lophoremaeus, gen. n., com duas espécies: mirabilis Csiszár, da Bulgária, espécie-tipo, e laminipes (Berlese), n. comb., da Itália; Paralopheremaeus, gen. n., com a espécie legendrei (Balogh), n. comb., de Madagascar; Calipteremaeus. gen. n., com a espécie yaginumai (Aoki), n. comb., do Japão; as seguintes espécies são consideradas incertae sedis: Plateremaeus carinulatus (Berlese), do Brasil, P. complanatus (Berlese), do Chile, P. rotundatus Berlese, do Japão, e P. tunicatus (Balogh), do Zaire.

The family Plateremaeidae is revised, and includes the following taxa: Plateremaeus Berlese, with the only species P. ornatissimus (Berlese), from Brazil; Allodamaeus Banks, with the species ewingi (Banks), from the USA, coralgablensis, sp. n. (type-locality: USA, Flórida, Coral Gables), and ornatos Balogh & Csiszár, from Argentina; Lophoremaeus, gen. n., with two species: mirabilis Csiszár, from Bulgaria, the type-species, and laminipes (Berlese), n. comb., from Italy; Paralopheremaeus, gen. n., with the species legendrei (Balogh), n. comb., from Madagascar; Calipteremaeus, gen. n., with the species yaginumai (Aoki), n. comb., from Japan; the following species are considered incertae sedis: Plateremaeus carinulatus (Berlese), from Brasil, P. complanatus (Berlese), from Chile, P. rotundatus Berlese, from Japan, and P. tunicatus ( Balogh, from Zaire.

Este trabalho faz parte da tese que apresentamos a Escola Superior de Agricultura "Luiz de Queiroz", para obtenção do titulo de Doutor em Agronomia. Encerra uma revisão da família Tetranychidae no Brasil. Os seguintes assuntos sao aqui tratados: Lista dos gêneros, subgêneros e especies ocorrentes no Brasil, com referência as plantas hospedeiras e a distribuição geográfica;chave para sub-famílias, tribos e géneros de Tetranychidae; chaves para auxiliar o reconhecimento das especies encontradas no país, lista das plantas hospedeiras. A tribo Porcupinychini Gutierrez, 1969 e posta em sinonimia com Hystrichonyehini Pritchard & Baker, 1955. O genero Anatetranychus Womersley, 1940 e as especies Tetranychus yusti McGregor, 1955 e Oligony ahus mangiferus (Rahman & Sapra, 1940), citados por Flechtmann, 1967, são aqui considerados erros de identificação.

A revision of the family Tetranychidae in Brazil (Arachnida: Acarina). In our recent paper: "Contribuição ao conhecimento da familia Tetranychidae no Brasil", published as a thesis we have reviewed the tetranychid mites found in this Country. The present work is part of that contribution. The following subjects are dealt with in this paper: List of genera, subgenera and species occuring in Brazil, with reference to the host plants and geographical distribution; key to sub-families, tribes and genera of the family Tetranychidae; keys for separating the species found in the Country; list of host plants. Tribe Porcupinychini Gutierrez, 1969 being considered a synonym of Histrichonychini Pritchard & Baker, 1955. Genus Anatetranyohus Womersley, 1940 and the species Tetranyohus yusti McGregor, 1955 and Oligonychus mangiferus (Rahman & Sapra, 1940), related by Flechtmann, 1967, are here considered misidentifications.

Sete especies de ácaros da família Tetranychidae são descritas. São elas: Tetranychus (T.) paschoali Paschoal, 1970, Tetranyohus (T3) escolasticae Paschoal, 1970, Tetrany -ohus (T.) zamithi Paschoal, 1970, Oligonyohus (O.) anonae Paschoal, 1970, Mononyohus bondari Paschoal, 1970, Mononyohus chemosetosus Paschoal, 1970 e Allonychus reisi Paschoal, 1970. 0 alótipo macho de Allonychus braziliensis (McGregor, 1950) e descrito e a fêmea redescrita, em base aos novos caracteres taxonômicos em uso atualmente. Estas especies foram descritas como novas em uma tese que submetemos à Escola Superior de Agricultura "Luiz de Queiroz", da Universidade de São Paulo, em 13 de junho de 1970.

Seven species of spider mites namely, Tetranyohus (T.) paschoali Paschoal, 1970, Tetranyohus (T.) esoolastioae Paschoal, 1970, Tetranyohus (T.) zamithi Paschoal, 1970, Oligonyohus (0.) anonae Paschoal, 1970, Mononyohus bondari Paschoal, 1970, Mononyohus ohemosetosus Paschoal, 1970, and Allonyohus reisi Paschoal, 1970, are described. The male allotype of Allonychus braziliensis (McGregor, 1950) is described and the female redescribed. These species were described as new in a thesis submited to Escola Superior de Agricultura "Luiz de Queiroz", University of São Paulo, Brazil, on June 13, 1970.