Taxonomia e distribuição de Actinocythereis brasiliensis sp. nov. (Podocopida, Trachyleberididae) na plataforma continental brasileira

A new species is described, Actinocythereis brasiliensis, from the southern Brazilian continental shelf. It is based on the analysis of 766 samples collected by oceanographical projects. The geographical distribution of this species has revealed its preference by the cold waters and terrigenous sediments and, has a bathymetric distribution between 22 and 164 m but, being concentrated in the shallower waters (< 60 m).

Palpimanid spiders from Guyana: new species of the genera Fernandezina and Otiothops (Araneae, Palpimanidae, Otiothopinae)

Two new species of the spider family Palpimanidae from Guyana are described: Fernandezina takutu, the first species of this genus known from this country andOtiothops giralunas, that seems to be the sister species of O. goloboffi Grismado, 1996 from northwestern Argentina.

Revisão taxonômica do gênero Homodiaetus (Teleostei, Siluriformes, Trichomycteridae)

The genus Homodiaetus Eigenmann & Ward, 1907 is revised and four species are recognized. Its distribution is restricted to southeastern South America, from Uruguay to Paraguay river at west to the coastal drainages of Rio de Janeiro State, Brazil. Homodiaetus is currently distinguished from other genus of Stegophilinae by the combination of the following characters: origin of ventral-fin at midlength between the snout tip and the caudal-fin origin; opercle with three or more odontodes; and gill membranes confluent with the istmus. Homodiaetus anisitsi Eigenmann & Ward, 1907, is diagnosed by the caudal-fin with black middle rays, margin of upper and lower procurrent caudal-fin rays with dark stripes extending to the caudal-fin, and 3-6 opercular odontodes; H. passarellii (Ribeiro, 1944) with 6-7 opercular odontodes, 21-24 lower procurrent caudal-fin rays and 23-26 upper procurrent caudal-fin rays; H. banguela sp. nov. with 9 opercular odontodes, 17-19 lower procurrent caudal-fin rays, 17-22 upper procurrent caudal-fin rays, reduction of fourth pharyngobranchial with only three teeth and untoothed fifth ceratobranchial; and H. graciosa sp. nov. with 5-6 dentary rows, 7-9 opercular odontodes and 16-23 upper procurrent caudal-fin rays.

Novas espécies de Trichomyia (Diptera, Psychodidae) da Mata Atlântica da Bahia, nordeste do Brasil

Six new species of Trichomyia from Atlantic rain forest of Bahia, northeastern Brazil, are described: T. itabunensis, T. onorei, T. queirozi, T. silvatica, T. sulbaianensis and T. teimosensis. The first two have palpi with four segments, similar to the other Neotropical species. The other four species have palpi with three segments, similar to other species with wide world distribution.

Catelanus and Fusimorphus (Coleoptera, Elateridae, Agrypninae)

The historical review and the diagnosis for the monotypical genera Catelanus Fleutiaux, 1942 and Fusimorphus Fleutiaux, 1942 are presented. Catelanus trilineatus (Castelnau, 1836) and Fusimorphus submetallicus (Fleutiaux, 1924) are redescribed and illustrated and new diagnostic characters are raised up. The historical review and the discussion on the remainder Neotropical genera of Hemirhipini are also included.

Uma espécie nova de Schwarzula da Amazônia (Hymenoptera, Apidae, Meliponini)

Schwarzula coccidophila sp. nov., a tiny Amazonian stingless bee, that attends scale insects (Cryptostigma Ferris, 1922, Coccidae) in its nest, is described. It is distinguished from Schwarzula timida (Silvestri, 1902), the only other species of the genus, mainly by the malar area longer than diameter of 3rd flagellomere, and the denser plumose pilosity. Additional records of S. timida is presented.

On Nesticus from Meridional South America (Araneae, Nesticidae)

Five new species of Nesticus Thorell, 1869 are described: N. potreiro, N. taim from southern Brazil; N. brignolii from southern Brazil, Argentina and Uruguay; N. calilegua from southern Brazil and Argentina and N. ramirezi, from Argentina. The male palpus and female epyginum of N. brasiliensis Brignoli, 1979 are illustrated. Described species were collected in epigean habitats, in shrubs, leaf-litter, under stones, bricks, tiles or debris.

Nereididae (Polychaeta) da costa nordeste do Brasil: III. Gêneros Ceratonereis e Nereis

Ten species belonging to the genera Ceratonereis Kinberg, 1866 and Nereis Linnaeus, 1758 were recorded in estuaries, exposed sandy beaches, shelly soft bottoms, atolls and coral reefs of the Brazilian northeastern coast. Two new species, Nereis serrata, from Ceará coast, and Nereis pseudomoniliformis, from Sergipe coast, are described.

Novo gênero de Anacolini e descrição dos machos de Myzomorphus Flavipes e Poekilosoma Carinatipenne (Coleoptera, Cerambycidae, Prioninae)

The new genus Hovorelus and its type-species, H. splendidus sp. nov., are described from Peru. The males of Myzomorphus flavipes Galileo, 1987 and Poekilosoma carinatipenne Lane, 1941, both with sexual dimorphism, are described for the first time.

Apsil Flavithorax, new species from Chile (Diptera, Muscidae)

Apsil Malloch, 1929 comprises 10 species endemic to Patagonia and southern Chile. A new species, Apsil flavithorax from Chile is described and illustrated, from three females.

Revalidação de Mauesini (Coleoptera, Cerambycidae, Lamiinae), transferência de gêneros, sinonímias e novos táxons

The tribe Mauesini Lane, 1956 is revalidated (type genus, Mauesia Lane, 1956). The following genera are transferred from Anisocerini to Mauesini: Taurolema Thomson, 1860 and Coroicoia Lane, 1966. New synonyms proposed: Taurolema nasicornis Schwarzer, 1930 with T. albopunctata Gounelle, 1906 and T. lineata Fuchs, 1966 with T. cicatricosa Lane, 1966. New species described from Brazil: Taurolema nigropilosa (Espírito Santo); Mauesia bicornis and M. acorniculata (both from Amazonas). A key to the genera of Mauesini is added.

Revisão do gênero Natagaima (Coleoptera, Cerambycidae, Lamiinae)

Natagaima Lane, 1972 is revised and provisionally transferred from Anisocerini to Acanthoderini. The genus and the type species, Natagaima balteata Lane, 1972, are redescribed and two new species added: N. moacyri, from Colombia (Tumaco) and N. heloisae, from Ecuador (Napo). All the species are illustrated and keyed.

Revalidação do gênero Demophoo (Coleoptera, Cerambycidae, Lamiinae)

Demophoo Thomson, 1864 is removed from the synonymy of Hoplistocerus Blanchard, 1847. The genus and D. hammatus (Chabrillac, 1857) are redescribed.

Revisão do gênero Satipoella (Coleoptera, Cerambycidae, Lamiinae)

The genus Satipoella Lane, 1964 is revised and a new synonym is proposed, Icarai Galileo & Martins, 1998, with Satipoella. A new species, S. ochroma, is described from Amazonas, Brazil. New combination: Satipoella bufo (Thomson, 1864) from Icarai. The three species of Satipoella are illustrated and keyed.

Novos táxons neotropicais de Desmiphorini (Coleoptera, Cerambycidae, Lamiinae)

New species described from Brazil: Curuapira tuberosa (Espírito Santo); Stereomerus maculatus (Bahia); Gyrpanetes oryba (Espírito Santo); Desmiphora (D.) santossilvai (Pará); Desmiphora (D.) uniformis (Bahia). Icublabia gen. nov., type-species, I. multispinosa sp. nov. from Ecuador (Napo) are described. Curuapira exotica Martins & Galileo, 1998, originally described from Venezuela, is recorded from Brazil (Amazonas, Rondônia and Mato Grosso).