Notas sôbre Tabânidas brasileiros: III. Fidena adnaticornis n. sp

Fidena adnaticornis n. sp. is described from female specimens. It closely resembles Fidena besckii (WIED. ), 1828 and indeed more closely Fidena soledadei (LUTZ), 1911. It can be distinguished from both by the antenna which are so close together that the distance between their basis is less that the width of the first antennal segment; also by the prevalence of yellow hairs on the coxae. In F. soledadei and chiefly in F. besckii the antennae an evidently more separated; they have also few yellow hairs limited to the base extremity of the coxae with prevalence of brown or black hairs. In F. besck the prealar hairs are predominantly yellow ones and there exist yellow hair around the edge of the scutellum, which does not occours in F. adnaticorn and in F. soledadei. In the abdomen the following areas, covered by whit hairs are more extensive in F. besckii: the mid row of white patches on the sternites is more conspicuous and involves the fifth segment; on the sternites instead of stripes the hairs form bands somewhat broader at the middle the respective segment, they may even form triangles with the base as with as the whole segment. Both cotypes of F. soledadei have the hairs damages but, at least, in the 1+2 sternites the areas covered by the white hairs see to be larger than in F. adnaticornis; they have also a higher frons: index : = 2.9.

Espécies novas do Herbário do Dr. Adolpho Lutz: Melastomataceae Tibouchina Lutzii Brade n.sp

A posição desta espécie é após Tibouchina floribunda Cogn. No hábito assemelha-se a Tibouchina Schwackei Cogn. mas distingue-se bem desta pelo revestimento diferente e a côr alva da página inferior da folha.

Compositae: Mutisia Lutzii G. M. Barroso n. sp

Planta muitíssimo interessante, que se distingue das demais espécies do gênero pela forma pectinada da folha. Dedicamos a linda espécie ao Dr. Adolpho Lutz, eminente sábio, que tanto trabalhou em prol da ciência, no Brasil.

Estudo sôbre hemoparasitos de Bufo marinus L. da Venezuela: 1. Hemogregarinas - - 2. Uma nova espécie de Toxoplasma

Faz-se uma revisão das espécies de Haemogregarina, encontradas, até a presente data, em Bufo marinus L. da região Norte, Leste e Sul da Venezuela,descrevendo-se o ciclo agâmico da Haemogregarina darlingi Leger, 1918, o ciclo esquizogônico da Haemogregarina aquai Phisalix, 1930, propondo-se seja denominada Karyolysus aquai (Phisalix) por realizar o ciclo agâmico nas células endoteliais. Descreve-se a Haemogregarina legeri nov. sp. Estuda-se um Toxoplasma no sangue e vísceras de Bufo marinus L., descrevendo-se a anatomia patológica dos órgãos afetados, discutindo-se o estado atual da sistemática das espécies de Toxoplasma, parasitos de vertebrados poikilotermos, propondo-se o nome de Toxoplasma serpai nov. sp. para êste protozoário.

New or rare frogs from the Coastal Ranges of Brazil: eleutherodactylus venancioi n.sp., E. hoehnei n.sp. Holoaden bradei n.sp. e H. lüderwaldti Mir. Rib., 1920

Field-work in the sierras near the sea-board of south-eastern Brazil continues to yield new or rare frogs. Four more of these forms are presented here. Two of them, both new, are put into the genus Eleutherodactylus, to which they belong by their general habitat, morphology, and also by the osteological characters. They differs from the known regional species of this genus only by the wider and shorter disks of some of the digits and the more lanceolate build. The other two species belong to the very little known genus Holoaden, established by MIRANDA RIBEIRO in 1920. One of them is his type-species, H. lüderwaldti, which continues to be very rare. The other, H. bradei, is new. It seems endemic to the Upper Itatiaia and is very plentiful there.

A contribution to the study of the Haematozoon parasites of bats: a new mammalian haemoproteid, Polychromophilus deanei n. sp

Polychromophilus deanei n. sp. (Haemosporidiidea, Haemoproteidae) is described from a vespertilionid bat, Myotis nigricans nigricans (SCHINZ, 1821), captured on the Rio Maracapuçu, Município of Abaetetuba, Pará, Brasil. Mature oocysts were found in 2 specimens of the ectoparasite Basilia sp., taken form the infected animal. The parasite is probably the same as that previously described in another bat, Glossophaga soricina soricina, from the same general area, by DEANE & DEANE in 1961.

Vorgaenge im Oozytenkern von Nasutitermes sp

Es werden die Vorgaenge in den generativen Kernen des Ovariums der Termite Nasutitermes sp. beginneng mit den juengsten OOgonien im Germarium bis zum reifen, nicht befruchteten Ei im Eileiter untersucht, wobei di Art Syntermes dirus zum Vergleich herngezogen wird. Es ergeben sich als Hauptresultate: 1. Germarium und Endfaden sind durch eine bindegewebige Scheidewand von einander getrennt, so dass die zentrale Kernreihe des letzteren nichts mit der Oogoniengeneration des Germariums gemeinsam hat. 2. Das Wachstum der Oogonien, Oozyten, Kernen und Nukleolen geht aus den Kurven der graphischen Darstellung der Figur 32 hervor. In den Oogonienkernen laufen die typischen Chromatinveraenderungen einer meiotischen Teilung bis zum Tetradenstadium ab. Waehrend dessen erleidet der Nukleolus nur geringfuegige Veraenderungen, bleibt waehrend der ganzen Prophasenvorgaenge erhalten und waechst, waehrend sich die Tetraden wieder aufloesen, etwa im gleichen Verhaeltnis wie der Kern (Tabelle 2). 4. Der Oozytenkern wird nicht am Ende der Dotterbildung aufgeloest und spaeter wieder in perpher Lage neu gebildet, wie von anderen Autoren mitgeteilt; er ist in jedem Stadium bis zum gereiften Ei im Ovidukt als solcher zu bobachten. 5. Es wird vermutet, dass die vorsvnaptischen Vorgaenge de Nukleolus und sein Weiterbestehen in Synapsis und Postsynapsis die zu erwartende Bildung einer meiotishchen Spindel unterbindet.

Funktionshistologie der Follikelzellen im Ovar von Nasutitermes sp. (Isoptera)

Es werden Histologie und Funktionen der Zellen der Follikelepithelien in den Ovariolen von Nasutitermes sp., unter Hinzuziehung von Syntermes dirus zu Vergleichszwecken, untersucht, und ihre Entwicklung von ihrer ersten Differenzierung im Mittelteil des Germariums durch sieben verschiedene Zonen der Ovariole bis zur Bildung des Chorions verfolgt. 1. Neben ihrer Schutzfunktion vermitteln die Follikelzellen waehrend der Wachstumsphasen einen grossen Teil des Stofftransportes von der Haemolymphe in die Oozyten. Ihre Funktion ist hierbei druesiger Art. Es lassen sich drei verschieden Funktinsstadien unterscheiden. 2. Am Ende der Naehrfunktion wechseln die Zellen ihre Taetigkeit und bilden das Chorion. 3. Das Epithel laesst zwischen mehreren zusammenstossenden Zellen dreiecksfoermige Durchbrueche frei, die nur von der tunica propria ueberzogen sind und die ebengalls, jetzt aber einen unmittelbaren Uebertritt von Substanzen aus der Haemolymphe in die Oozyten zulassen. 4. Die interfollikulaeren Zellen produzieren eine der Tunica propria aehnliche Substanz. Dieser Komplex dient zum festern Zusammenhalt der Komponenten der Ovariole.

Lankesterella alencari n. sp., a toxoplasma-like organism in the central nervous system of Amphibia (Protozoa, Sporozoa)

Lankesterella alencari n. sp. a Sporozoa that occur in the blood and CNS of the South American frog Leptodactylus acellatus is described. Since the tissue forms of this parasite have been previously reported as belonging to the genus Toxoplasma, we attempted in fection of 2 species of amphibia (Bufo marinus an dLeptodactylus ocellatus) with a Toxoplasma strain of human origen; inoculation was by intraperitoneal injection of parasite-containing ascitic fluid from infected mice. Attempt of experimental inoculation of the parasite found in the CNS of L. ocellatus in a highly susceptible host (mice) was unsuccessful. These results suggest that Toxoplasma does not occur naturally in the amphibia; be related to Toxoplasma is excluded. The following genera of haematozoa found in brazilian amphibia have been considered briedfly: Haemobartonella, Cytamoeba, Dactylosoma, Hepatozoon and Trypanosoma.

Toddia sp., "corpúsculo paranuclear" no sangue de Leptodactylus e Bufo do Brasil: desenvolvimento e citoquímica

O gênero Toddia, criado por França 1911, para um organismo encontrado em eritrõcitos de um anfíbio anuro, tem estrutura particular e o problema de sua natureza (protozoário ou vírus) é discutido. Nosso resultados mostram reações Feulgen e Verde Metila positivas, principalmente no início da infecção. Com o decorrer da infecção as partículas são, geralmente, maiores que aquelas observadas alguns dias após as inoculações, mas as reações citoquímicas citadas anteriormente são, em geral, negativas ou fracamente positivas. Os mesmos resultados foram obtidos quando empregamos Laranja de acridina para caracterização do DNA e esta técnica foi negativa para o RNA. Estudando o desenvolvimento deste organismo e seus efeitos infecciosos foram confirmados por inoculações experimentais. As alterações no sangue do hospedeiro foram observadas e notamos que o núclo dos eritrócitos é severamente alterado durante o desenvolvimento da infecção, que é geralmente, muito intensa, terminando com a morte do hospedeiro. As inoculações experimentais demonstraram a especificidade da infecção, e diante dos conhecimentos a respeito dos organismos deste gênero, discutimos o problema da criação de espécies.

Helmintos parasitos das espécies Scomberomorus cavalla (Cuvier) e Scomberomorus maculatus (Mitchill) do litoral cearense: Contracaecum fortalezae sp. n. (Nematoda, Ascaridoidea)

De nematódeos encontrados parasitando estômago, intestinos delgado e grosso de Scomberomorus cavalla (Cuv.) e Scomberomorus maculatus (Mitch.) o autor propões para o gênero Contracaecum Railliet et Henry, 1912 uma nova espécie, C. fortalezae sp. n., que mais se aproxima de C. clavatum (Rud., 1809) Baylis, 1920 dela se diferenciando por possuir espículos desiguais, um curto ovejetor, útero opistodelfo, ovos menores e por apresentar em todos exemplares estudados ceco intestinal curto e ceco esofagiano longo.

Biomphalaria occidentalis sp.n. from South America (Mollusca basommatophora pulmonata)

A new species of South American planorbid snail, Biomphalaria occidentalis, is described. It is indistinguishable from B. tenagophila (Orbigny, 1835), by the characteristics of the shell and of most organs of the genital system. In B. tenagophila there is a pouch on the ventral wall of the vagina (Fig. 4A, vp), absent in B. occidentalis (Fig. 3A), and on the ventral wall of the vagina (Fig. 4A, vp), absent in B. occidentalis (Fig. 3A), and the prepuce is much wider than the penial sheath, its width increasing distalward (Fig. 4, ps,pp), whereas in B. occidentalis the prepuce is wider than the penial sheath but keeps about the same width all along (Fig.3, ps, pp). The two species are biologically separate by absolute reproductive isolation. The geographical distribution of B. occidentalis is shown in Fig. 14. So far it has been found in the Brazilian states of Acre, Amazonas (?), Mato Grosso, Mato Grosso do Sul and Paraná, and in Paraguay. Its type-locality is Campo Grande, state of Mato Grosso do sul, where it was collected from several biotopes related to affluents of the Aquiduana river, chiefly Córrego Prosa and Córrego Ceroula. Specimens were deposited in the following malacological collections: Instituto Oswaldo Cruz, Rio de Janeiro; Academy of Natural Sciences, Philadelphia; Museum of Zoology, University of Michigan; and British Museum (Natural History).