Refilling meridians in a genus 2 handlebody complement

Suppose a genus two handlebody is removed from a 3-manifold M and then a single meridian of the handlebody is restored. The result is a knot or link complement in M and it is natural to ask whether geometric properties of the link complement say something about the meridian that was restored. Here we consider what the relation must be between two not necessarily disjoint meridians so that restoring each of them gives a trivial knot or a split link.

Fifth contribution to the knowledge of the genus Archytas Jaennicke, 1867 (Diptera, Tachinidae)

No presente trabalho são redescritas as seguintes espécies do gênero Archytas Jaennicke, 1867: Archytas lateralis Macquart, 1842, Archytas metallicus Desvoidy, 1830; Archytas aterrimus Desvoidy, 1830 e Archytas willistoni Curran, 1925. São ainda descritas duas espécies novas, provenientes do Estado do Pará, Brasil: Archytas pearsoni e A. araujoi. O material estudado pertence à coleção do Instituto Oswaldo Cruz, Rio de Janeiro.

The life history of Hepatozoon leptodactyli (Lesage, 1908) Pessoa, 1970: a parasite of the common laboratory animal: the frog of the genus Leptodactylus

The main object of the present paper is to furnish a brief account to the knowledgement of Protozoa parasitic in common Brazilian frog of the genus Leptodactylus for general students in Zoology and for investigators that use this frog as a laboratory animal. Hepatozoon leptodactyli (Haemogregarina leptodactyli) was found in two species of frogs - Leptodactylus ocellatus and L. pentadactylus - in which develop schizogony whereas sporogony occurs in the leech Haementeria lutzi as was obtainded in experimental conditions. Intracellular forms have been found in peripheral circulation, chiefly in erythrocytes, but we have found them in leukocytes too. Tissue stages were found in frog, liver, lungs, spleen, gut, brain and heart. The occurence of hemogregarine in the Central Nervous System was recorded by Costa & al,(13) and Ball (2). Some cytochemical methods were employed in attempt to differentiate gametocytes from trophozoites in the peripheral blood and to characterize the cystic membrane as well. The speorogonic cycle was developed in only one specie of leech. A brief description of the parasite is given.

A selective medium for the isolation of the acinetobacter genus bacteria

A selective and differencial medium was developed for the isolation of Acinetobacter genus bacteria. This Acinobacter Agar Medium (p.H + 7.4) contains in grams per litre: thiotone, 10; yeast extract, 3; naC1, 5; saccharose, 10; mannitol, 10; sodium citrate, 0.5; sodium desoxycholate, 0.1; crystal violet, 0.00025; phenol red, 0.04 and agar-agar 15. This medium has the advantage of inhibiting the growth of cocci and Gram-positive bacilli, by the use of sodium citrate and sodium desoxycholate associated with the crystal violet; and of differentiating the Gram-negative bacilli from the Enterobacteriaceae, through the fermentative activity upon the saccharose and/or mannitol, contrasting with the complete inactivity of the Acinetobacter genus bacteria over those substances.

On the species described by Szidat in 1954 in the genus Saccocoelioides (Digenea: Haploporidae)

New morphological data, original measurements and figures of syntypes of the species of Saccocoelioides described by Szidat in 1954 are presented: S. nanii, S. elongatus, S. magniovatus, S. magnus, S. quintus (=S.sp. 5) ans S. szidati (=S.sp.6). Two speciments of S. elongatus are identified to S. nanii, S. leporinodus is considered a synonym of S. saccodontis and S. quintus is regarded as "species inquirenda".

Taxonomical and biogeographical problems in Mediterranean shrews of the genus Crocidura (Mammalia, Insectivora) with reference to a new karyotype from Sicily (Italy)

Shrews of the genus Crocidura from Sicily revealed a new karyotype from Europe: 2n = 36, NF = 56, NFa = 52. With reference to the revision of Vesmanis (1976), this shrew is provisionally attributed to C. caudata Miller, 1901 and it is proposed to call it the "Sicilian shrew". Its chromosome complement is similar to that of shrews from Canary Islands and a species from Burundi (Central Africa), suggesting that it might have split off from a line of Paleotropical origin. Following these findings, the modern concept of Mediterranean island colonization by shrews must be revised. The distinctive characteristics of Mediterranean shrews should also be revised.

Urocleidoides astyanacis n. sp. (Mongenva ancyrocephalinae) from frescwater characidians on the genus Astyanax

A new species of Urocleidoides, U. astyanacis (Monogenea, Ancyrocephalinae) is described from the "lambari" Astyanax scabripinnis (Jenyns, 1842) and A. fasciatus (Cuvier, 1819). Hosts were collected in Atibaia and Jaguari Rivers near Campinas, São Paulo State, Brazil.

The genus lobatostoma (Trematoda: Aspidocotylea) in the pacific coast of South America, with description of Lobatostoma veranoi new species, parasite of Menticirrhus ophycephalus (Teleostei: Sciaenidae)

The presence of three aspidocotyleans trematodes in marine fishes from Perú and Chile is reported. One of them, Lobatostoma veranoi from the intestine of Menticirrhus ophicephalu (Sciaenidae) is considered a new species. Distinct characteristcs of the new species are:a cirrus sac smaller than the pharynx; tail overlapping posteriorly the ventral disk; testis in the last third of the body and the presence of 64-66 marginal alveoli. The two other species are Lobatostoma pacificum Manter, 1940 found in Trachinotus paitensis Cuvier, 1830 from Perú and Chile and Lobatostoma Anisotremum Oliva & Carvajal, 1984 from the intestine of Anisotremus scapularis (Tschudi, 1844) from Perú.

Taxonomy and distribution of phlebotomine sandflies in Venezuela: I. The Oswaldoi species group of the genus Lutzomyia (Diptera: Psychodidae)

Species of sandflies in the oswaldoi-group of the genus Lutzomyia occuring in Venezuela are reviewed. A new species, Lutzomyia saccai n. sp. is described. A distribution map and pictorial keys for males and females are provided with notes on biological and ecological data collected in Venezuela.

Taxonomy and distribution of phlebotomine sandflies in Venezuela: II. The subgenus Trichopygomyia of the genus Lutzomyia (Diptera: Psychodidae)

Species of sandflies in the subgenuys Trichopygomyia of the genus Lutzomyia occurring in Venezuela are reviewd. A new species, Lutzomyia pinna n. sp. is described. A distribution map and a pictorial key for maleds are provided with remarks on the ecological data collected in Venezuela.

First known brazilian species of the genera Scutops and Neoscutops (Diptera: Periscelididae), with comments on the relationships among the species in each genus

Four new species of Periscelididae are described from Brazil - Neoscutops cariri, sp. n., and Scutops marcgrafi sp. n., from the northern extreme of the Atlantic Forest, S. lopesi, sp. n., from southeastern Brazil, and S. goianiensis, from central Brazil. S. chapmani is herein synonymezed to S. fascipennis. A key is provided for the known species of Neoscutops and Scutops. A brief discussion is made about the possiblem phylogenetic relationships among the species of each of these two genera.

Notes on species of the genus Agria R.-D. (Diptera, Sarcophagidae)

A key is given for the identification of females of all Holarctic species included into this genus, and keys are provided for distinguishing third instar larvae and puparia of two Palaeartic species. In addition to these, the description of the A. monachae (Kr.) female has been expanded.