Maritremopsis mariettavogeae sp. n. (Trematoda, Microphallidae) and Amphimerus lancea (Diesing, 1850) (Trematoda, Opisthorchiidae) parasites of Nectomys Squamipes (Rodenta) in Brazil

In this paper two species of trematodes recovered from nectomys squamipes from Goiás State, Brazil, are presented. Maritremopsis mariettavogeae sp. n. is compared to M. proxilum (Caballero & Montero-Gei, 1961) and M. belopolskaiae (Caballero, 1964). Amphimerus lancea originally described from a cetacean host, is for the first time referred in a rodent.

Redescription of the type-material of creptotrema creptotrema travassos, Artigas & Pereira, 1928 (Digenea, Allocreadiidae)

Creptotrema creptotrema Travassos, Artigas & Pereira, 1928, a digenetic trematode parasite of Leporinus elongatus, is redescribed from the type-material with additional morphological data and original figures.

Report of Lepocreadium Bimarium manter, 1940, Vitellibaculum Spinosa (Siddioi) & Cable, 1960) and Hirudinella Ventricosa (Pallas, 1774), parasites of marine fishes in Brazil

Lepocreadium bimarinum and Vitellibaculum spinosa are referred for the first time in Stephanolepis hispidus and in Brazil, and Hirudinella ventricosa is reported from Scomberomorus cavalla. Measurements, figures and comments are given.

New morphological data on Opecoeloides pedicathedrae Travassos, Freitas & Buhrnheim, 1966 (Digenea: Opecoelidae)

New morphological data on the ventral sucker of Opecoeloides pedicathedrae with ten papilliform processes, original figures and measurementes, are reported.

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".

Saccocoelioides godoyi n.sp. (Haploporidae) and other trematodes parasites of fishes from the Guaiba estuary, RS, Brazil

One hundred and fourteen specimens of eleven different species of freshwater fishes from the Guaiba estuary, were examined for digenetic flukes. Saccocoelioides godoyi n.sp. proposed herein, is closest to S. magniovatus and to S. szidati; S. magniovatus is much smaller with comparably larger eggs and S. szidati has larger hermaphroditic sac and considerably larger testis. Creptotrema creptotrema is referred to a new host; Acanthostomum gnerii, Crepidostomum platense, Eocreadium intermedium (immature form), Parspina argentinensis and Zonocotyle bicaecata are reported. This paper confirms the similatary between the parasites of freshwater fishes from Argentina and Brazil. Measurements and original figures of all species are given.

Trématodes parasites de poissons marins du littoral de Rio de Janeiro, Brésil

Les Trématodes de 35 espèces de poissons marins, d'importance commerciale, collectés dans le littoral de Rio de Janeiro, ont été étudiés. Dix-sept espèces de Trématodes appartenant à 13 familles ont été recensées. Quatre de ces espèces sont référés pour la première fois au Brésil: Diphtherostomum americanum, Diplomonorchis floridensis, Pancreadium otagoensis et Neomegasolena chaetodipteri, neuf dans de nouveaux hôtes: D. americanum, Diplangus paxillus, Hurleytrema shorti, Lecithochirium microstomum, Morascus filiformis, Neolebouria multilobatus, P. otagoensis, Pleorchis mollis et Opechona bacillaris, une a été recontrée dans un hôte mentionné pour la première fois au Brésil: Vitellibaculum spinosum et cinq autres espècies sont déjà répertoriées: Acanthocollaritrema umbilicatum, Bucephalopsis calliocotyle, Bucephalus varicus, Parahemiurus merus et Tergestia pauca. Tergestia selenei est consideré synonyme de T. pauca. Les principales mesures sont données pour chaque espèce.

Redescription of Teratotrema dubium, Travassos, Artigas & Pereira, 1928 (Callodistomidae: Digenea)

Teratotrema dubium Travassos, Artigas & Pereira, 1928, a digenetic trematode parasite of Pseudocurimata plumbea (Curimatidae: Pisces) is redescribed with additional morphological data, confirming the presence of a single testis.

The hemocytes of Panstrogyllus Megistus (Hemiptera: Reduviidae)

Five hemocyte types were identified in the hemolymph of Panstrongylus megistus by phase contrast and common light microscopy using some histochemical methods. These are: Prohemocytes, small cells presenting a great nucleus/cytoplasm ratio; Plasmatocytes, the most numerous hemocytes, are polymorphic cells mainly characterized by a large amount of lysosomes; Granulocytes, hemocytes very similar to plasmatocytes which contain cytoplasmic granules and are especially rich in polysaccharides; Oenocytoids, cells presenting a small nucleus and a thick cytoplasm; they show many small round vacuoles when observed in Giemsa smears and many cytoplasmic granules under phase microscopy; Adipohemocytes, very large hemocytes, presenting many fat droplet inclusions which could correspond to free fat bodies which entered the hemolymph. Only prohemocytes and plasmatocytes can be clearly classified; all the other hemocyte types have a more ambiguous classification.

Estudo comparativo dos helmintos parasitos de peixes do rio Mogi Guassu, coletados nas excursões realizadas entre 1927 e 1985

Este trabalho abrange o parasitismo por nematóides, acantocéfalos, trematódeos e cestóides de 1027 peixes pertencentes a 45 espécies do rio Mogi Guassu, examinados nos anos de 1927, 1946, 1947, 1962, 1983 e 1985, como uma contribuição ao conhecimento da fauna parasitária em 58 anos. São relacionadas 32 espécies de nematóides, 21 de trematódeos, três de acantocéfalos e duas de cestóides. São referidos novos hospedeiros para Cucullanus pinnai, Spirocamallanus inopinatus e Travnema travnema, para o trematódeo Pararhipidocotyle jeffersoni e para o acantocéfalo Gorytocephalus spectabilis. São apresentadas medidas adicionais de Creptotrema lynchi, tabelas, gráficos e a lista dos hospedeiros examinados e seus parasitos.