The Spittlebug Mahanarva tristis as a Senior Synonymy of Four Neotropical Species of Mahanarva (Hemiptera: Auchenorrhyncha: Cercopidae), and Considerations About M. tristis Subspecies.

Mahanarva Distant, the neotropical spittlebug genus contains 48 species and many of them are only known from their original descriptions and one location. A group of species of this genus stand out due to their similarities and are studied here. Based on comparisons between 28 Mahanarva tristis (Fabricius) specimens and the original drawings of the other species, we demonstrate strong morphological similarities.

Pseudoscopas carbonelli n. sp. (Orthoptera: Acrididae: Melanoplinae) from southern Brazil, including chromosome complement.

New species of Pseudoscopas (Orthoptera, Acrididae, Melanoplinae). Pseudoscopas carbonelli n. sp.

Revision of the South American genus Xiphiola Bolívar, 1896 (Orthoptera: Acrididae: Ommatolampidinae: Abracrini).

The Neotropical genus Xiphiola Bolívar, 1896 is revised. It includes two valid species: Xiphiola borellii Giglio-Tos, 1900 and Xiphiola cyanoptera (Gerstaecker, 1889). The genus and the species are redescribed and diagnostic characters are provided along with illustrations of each species.

Two new species of the Neotropical spittlebug genus Monecphora Amyot & Serville (Hemiptera: Cercopidae) with key and notes of species of the genus.

Two new species of the Neotropical spittlebug genus Monecphora Amyot & Serville are described: Monecphora machadoi sp. nov. (Holotype male deposited in NMW: Brazil, "Natterer") and Monecphora broomfieldi sp.

Revision of Urubaxia Fennah (Hemiptera: Cercopidae: Ischnorhininae) with description of two new species.

We reviewed Urubaxia Fennah, 1968 and described two new species, Urubaxia solo n.sp. and Urubaxia chewie n.

Stigmaeid mites (Acari: Stigmaeidae) from vineyards in the state of Rio Grande do Sul, Brazil.

The fauna of the family Stigmaeidae Oudemans on grapevines and weed plants associated with vineyard agroecosystem in the state of Rio Grande do Sul (Brazil) was studied. Five recognized species were reported: Agistemus brasiliensis Matioli et al., 2002, Agistemus floridanus Gonzales, 1965, Agistemus mendozensis Simons, 1967, Zetzellia agistzellia Hernandes and Feres, 2005, and Zetzellia malvinae Matioli et al.