Repositório RCAAP

The monotypic genus Elipesurus of neotropical freshwater stingrays, and its type species E. spinicauda, are known from a single specimen which lacked a developed tail and caudal sting. No type or similar specimens exist. The original description and illustration are inaccurate, without diagnostic measurements or characters, excepting those mentioned above. Therefore, a precise identification of E. spinicauda remains impòssible, and both names are considered doubtful. Since all other potamotrygonid stingrays have more or less developed tails and stings, the Elipesurus condition is regarded as a mutilation.

No summary/description provided

Crossodactylus bokermanni, sp. n., is described from Serra do Cipó, Minas Gerais, Southeastern Brasil. The new species is characterized by the small size (20-27 mm), slender build, long legs, narrow head, long and acuminate snout, rounded but fairly defined canthus rostralis, and small tympanum. Also, notes on its habits are made and its tadpole is described.

No summary/description provided

No summary/description provided

Dinocoris Burmeister 1835 is revised on the basis of a morphological study emphasizing genitalia and the geographical distribution of the species. Fifteen species - five new - are recognized, and are here grouped in two subgenera. Subgenus Dinocoris Burmeister, 1835 includes D. (D) variolosus (Linnaeus, 1758); D. (D.) histrio (Linnaeus, 1758); D. (D.) maculatus (Laporte, 1832); D. (D) corrosus (Herrich-Schaeffer, 1844); D. (D.) antennatus (Dallas, 1851); D. (D.) gibbus (Dallas, 1852); D. (D.) ramosus (Walker, 1868); D. (D.) gibbosus (Fallou, 1889) D. (D.) rufitarsus Ruckes, 1958; D. (D.) reticulatus, sp. n.; D. (D.) fabricii, sp. n.; and D. (D.) nigroantennatus, sp. n. Subgenus Praedinocoris, subg. n. includes D. (P.) lineatus (Dallas, 1852); D. (P.) prolineatus, sp. n.; and D. (P.) nigrodecoratus, sp. n. Bryelica Walker, 1868 is considered a junior synonym of Dinocoris. An illustration of the dorsal facies is given for D. (D.) reticulatus, sp. n., D. (P.) prolineatus, sp. n. and for D. (P.) nigrodecoratus, sp. n. The male and female genitalia are illustrated for all species. A key is given to saparate suggenera and species.

The 24 New World species of Chrysomyini are revised. Keys are given to genera and species with illustrations of characters of diagnostic and systematic importance. All taxa are fully described (except for the species of Chrysomya and Cochliomyia), and reference is made to their biology where is known. There are 20 endemic species (1 Chloroprocta, 3 Paralucilia, 6 Hemilucilia, 4 Cochliomyia, 6 Compsomyops), and 4 Chrysomya have been introduced from the Old World. Four new species are described: Paralucilia adesposta, P. xantogeneiates, Hermilucilia melusina, Compsomyops melloi. There are 2 new generic and 2 new specific synonymies. The types of previously described species have been examined wherever possible, and lectotypes designated where appropriate.

Three new species of Minasmiris Carvalho (Hemiptera, Miridae), from South America, are described: M. peruanus, sp. n., from Peru; M. maldonadoi, sp. n., from Colombia; and M. argentinus, sp. n., from Argentina. Illustrations of the habitus, male genitalia and dorsal view of head are included.

Five new species of Miridae (Hemiptera) are described: Englemania peruana, from Tingo Maria; Peru; Pycnoderes venezuelanus, from Biscucuy, Venezuela; Euchilochoris bolivarianus, from Chapare, Bolivia, Guacatal in Venezuela and Santa Inez in Ecuador; Neoneella minuscula, from Águas Vermelhas, Minas Gerais, Brazil; and Neofurius quichuanus, from Tingo Maria, Peru. Monalonion decoratum Monte, 1942, is revalidated. Illustration of the habitus and male genitalia of these taxa are included.

Development rate, survival and growth of a neotropical midge, Chironomus sancticaroli, were determined in laboratory at different temperatures. The "lower thermal limit" is 12ºC and the "thermal constant", characteristic for the species, varies from 140-144 day-degree. These results pointed out to a high development when compared with species of temperate areas and permit to expect, for C. sancticaroli, 16-18 generations/year, in natural conditions.

Ultrastructural features of the gastric caeca of Odontosciara sp. are reported. The species has 4 lateral caeca connected with the anterior midgut at the level of the foregut junction. The epithelial cell features indicate protein synthesis, digested material absorption from the lumen and haemolymph material absorption. Those functions, however, do not seem to be very intense.

Pilarella longicornis gen. n., sp. n. (Copepoda-Arietellidae) collected over the bottom of the Brazilian continental shelf is described and its taxonomic position is discussed.

The genus Neoscolecithrix is redefined and its situation in the family is discussed. The division of the species of this genus into two groups, "kehleri" and "farrani", is proposed, based on marked differences in the type of the rostrum, in the mandible's gnathobase, in the maxilla 2 and in the legs, especially the fifth leg. Xanthocalanus watersae Grice (1972) is considered a species of Neoscolecithrix. The female and the male of N. caetanoi sp. n., collected off the Brazilian coast at 900 m depth, are described.

Hyalella is widely distributed in the Americas. Until the present moment around 30 species have been identified. Hyalella curvispina Shoemaker is treated as synonynous with Hyalella pernix (Moreira) due to the very strong similarities found in both species: they have in common an outstanding curved spine on the inner ramus of uropod 1 of the male. This is considered the main characteristic of H. curvispina. With the species already known and the synonymy treated here a total of 29 species of Hyalella is reached. It would seem that H. pernix is the most widespread species in Brazil and in South America as a whole.

Seven species of Syllidae (Annelida, Polychaeta) inhabiting colonies of the bryozoan Schizoporella unicornis (Johnston), a common species on the beaches of Ubatuba and São Sebastião, São Paulo State, Brazil are described: Exogone occidentalis Westheide, 1974; Haplosyllis spongicola (Grube, 1855); Opistosyllis corallicola Hartmann-Schröder, 1965; Syllis gracilis (Grube, 1840); Trypanosyllis taeniaformis (Haswell, 1866); Typosyllis maculata Imajima, 1966 and Typosyllis variegata (Grube, 1860). Among these, E. occidentalis, O. corallicola, T. taeniaformis and T. maculata are cited for the first time for the Brazilian coast. The most abundant of these species was S. gracilis.

The present study reveals that the excretory system of Glossoscolex paulistus is formed by open holonephridia (exonephridia). It is noticed that different zones are recognized in the nephridial canal, with defined histological and histochemical characteristics: 1) primary canal; 2) lobed canal; 3) first rounded segment; 4) afferent thin segment; 5) efferent thin segment; 6) second rounded segment; 7) ciliary tube; 8) clear canal; 9) pigmented canal; 10) intermediate canal; 11) bladder; 12) terminal canal; 13) nephridiopore. All these regions are intercellular and cilia are found in regions 1, 2, 3, 6, 7 and 13. The connections between afferent and efferent capillary of the vascular supply of the nephridium are made of capillary loops and dilatations which we call "glomeruli" in this paper. Filtering functions are suggested for the "glomerulus". The response of the lobed canal and the first and second rounded segments to Gomori's reaction is strongly positive and this is found to coincide with the largest concentration of "glomeruli" in the main loops 1 and II, that suggests a higher filtration capacity for the canal and segments.

No summary/description provided

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.

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).

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).