RCAAP Repository

This paper has the purpose of studying the interspecif relationships of larvae of Cochliomyia macellaria (Fabricius) and Chrysomya albiceps (Wiedemann) in laboratory. The experiments were conducted on climatized chamber set at 30ºC, 60+10% UR and 14h photophase. The relation of 1 larva/g diet was established. The association influence of post-embrionary development duration of both species. The association with Chrysomya albiceps influenced the weight of mature larvae of Cochliomyiia macellaria. reducing it significantly. Such weight decrease, along with the predation of larvae of C. macellaria larvae, yielded a decrease in survival in all of the stages.

This paper intends to recognize some aspects of interspecific relationships between Chrysomya megacephala (Fabricius) and C. albiceps (Wiedemann) and between C. megacephala and Cochliomyia macellaria (Fabricius) larvae in laboratory. A diet consisting of decomposing horse flesh was used, and the relation of 1 larva/g diet was established. The development of the two species was done in pure and associated cultures. The association with Chrysomya albiceps influenced the post-embrionary development period and the weight of mature larvae of the C. megacephala, reducing their. Such weight decrease, along with the predation of larvae of C. megacephala larvae, yelded a decrease in survival in all of the stages. Larvae of this species showed an increase in its weight when associated with Cochliomyia macellaria. The native species responded to the association by reducing its body weigth and its viability. This association doesnt influence the duration of post-embrionary development.

Three new species of Dasineura Rondani, 1840 associated with Eugenia rotundifolia Casar, Myrciaria floribunda (Camb.) Legr. and Neomitranthes obscura (DC.) Legr. (Myrtaceae) are described and illustrated. Some biological informations are provided.

Keys to Cecidomyiidae galls occuring on Myrtaceae by genus of the host plant, in alphabetical order, are presented. Data on gall makers, predators and inquilinous species are given, as well as illustrations of the galls.

No summary/description provided

The purpose of this note is to make possible the obtainment of common logarithm of factorial values above 499, making feasible the utilization of Brillouin's Diversity Index.

A survey of nematode species parasitizing Brazilian birds is presented, with enough data to provide their specific identification. The first section refers to the survey of the species, related to 17 superfamilies, 23 families, 75 genera and 257 species that are illustrated and measurement tables are given. The second section is concerned to the catalogue of host birds which includes 54 families. 361 species. and their respective parasite nematodes. The identification of these helminths is achieved by means of keys to the superfamilies. families and genera. Specific determination is induced through the figures and tables as above mentioned.

Twelve species of Pinnotheridae from Santa Catarina and Rio Grande do Sul States, Brazil, are redeseribed and illustrated; a key of identification is presented. Clypeasterophilus stebbingi Rathbun, 1918; Pinnotheres garthi Fenucci, 1975 and Pinnixa brevipollex Rathbun, 1898 are reported for the first time for Brazil. Clypeaslerophilus stebbingi Rathbun, 1918 and Tumidotheres maculatus Say, 1818, are new record for Santa Catarina. Fabia insularis Melo, I971 and Pinnotheres emiliai Melo, 1971 are revalitaded; Fabia sebastianensis Rodrigues da Costa, 1969; Pinnotheres garthi Fenucci, 1975; Pinnotheres emiliai Melo, 1971 and Pinnixa patagoniensis Rathbun, 1918 are new records for Rio Grande do Sul. Pinnixa brevipollex Rathbun, 1898 is a new record for Santa Catarina and Rio Grande do Sul.

Sperm of 180 three year old males of curimbatá, Prochilodus scrofa (Steindachner, 1881), was collected to verify the possibility of utilization of these males more than one time, and to know how long after the hormonal induction would occur the highest production of milt. This experiment was carried out in 1991 and 1992. After sperm was collected, each male was stimulated by the first injection of five IU/g of hCG. Then, milt was collected at 8, 16, 24, 48, 72 and 96 hours before and after the first dose and at 16 hours before and after the second one. Mean volume values were, before hormonal injection, 0.22ml and after two doses of hCG, 106ml. Maximal production occurred between 16 and 24 hours after induction. Mean values of sperm concentration and total number of sperm were, before hormonal induction, 31.16xl0(6)/mm³ and 6.79x10(9) and after two doses, 21.46x10(6)/mm³ and 22.15x10(9), respectively. There were no statistical differences between males receiving two or one doses of hCG concerning fertilization. Results indicated that males of Prochilodus scrofa may be induced a second time 14 days apart, what increases their reproduetive efficiency.

Qualitative and quantitative aspects of the distribution of Pantopoda species living on Sargassum of Ubatuba and Itanhaém (northern and southern coast at São Paulo State, respectively) were studied. The results showed the occunence of nine Pantopoda species. The highest relative frequency was assigned to Tanystylum isahellae Marcus, 1940. In general the density of Pantopoda species was related to that of Hydrozoa covering Sargassum.

A descriptive account is given of the post-embrionic development of Amphilochus neapolitanus Della Valle, 1893 and Ampilhoe ramondi Audouin, 1826 living on Sargassum cymosum C. Agardh, 1820 of Ubatuba, Brazil (23º30'S-45º06'W) through the growth stage based on the morphological changes at each moult. The growth stages are described on the increase of antennal and pleopodal articles number and morphological alterations of gnathopods. The number of stages was found to be different for males and females and the maturity occurs after 6 and 5 post marsupial stages for A. neapolitanus and A. ramondi respectively.

A preliminary survey of bats species from the Serra da Tiririca State Park is presented. Two hundred and seventy two bats of 20 species were collected. Comments about reproduction and feeding habits of the captured species are included.

The natural formation of gas vacuoles as a method of locomotion is described for Difflugia mitriformis Wallich, 1984. These vacuoles may contain different compositions of gases, basicly carbodioxyde or oxigen, with a membranous limitation similar or identical to other types of vacuoles. Those vacuoles are utilised by the organism as a mode of dislocation frorn the bottom to the water surface by flotation permiting better conditions for the survival of the individual, with the consequence of the perpetuance of the taxon.

Adults and immature forms of G. gibberus Boisduval, 1835 and G. scutellatus Gyllenhal, 1833 are redescribed briefly. A morphologic study of male and female genitalia with illustrations and keys for the identification of these species are included. The records on the female genitalia are presented for the first time.

A brief bibliography of Gayomyia Banks, 19i3 (Neuroptera, Hemerobiidae) and of Gayomyia Malloch, 1933 is presented.

The following genera are treated: Ennya Stål, Gelastogonia Kirkaldy, gen.rev. and Notogonia, gen. n.; six new species are described and some nomenclatural changes introduced, as follow: 1) Ennya Stål, 1866 = Mille Stål, 1867, syn.n.; E. conica (Fairmaire, 1846) = Oxygonia accuminata Buckton, 1903, syn.n., (Lectotype of E. conica here designated); E. dorsalis (Fairmaire, 1846) (Lectotype here designated); E. ecuadorensis (Fowler, 1894) sp.rev.; E. fasciata (Fallou, 1890) sp.rev.; E. maculicornis (Fairmaire, 1846), comb.n., (Lectotype here designated); E. rufomaculala Fallou, 1890, comb.n. = E. chlorisans Breddin, 1902 = E. nebulosa Breddin, 1902 = Gelastogonia funkhouseri Goding, 1928, syn.n.; E sobria (Walker, 1851), sp.rev., = Thelia perfecta Walker, 1858, syn.n. = Hile sulphured Butler, 1877, syn.n. = Hile limbispina Breddin, 1901, syn.n.; E. bordoni, sp.n. (from Peru); E. colombiana, sp.n. (from Colombia); E. andina, sp.n. (from Peru). 2) Gelastogonia Kirkaldy, 1904, gen.rev. = Ecuatoriana Goding, 1920. syn.n.; G. bicristata (Stål, 1869), comb.n. = Ecuatoriana bactriana Goding, 1920, syn.n.; G. pulchella (Funkhouser, 1914), comb.n.; G. rufipes (Fairmaire, 1846), comb.n.; G. parva, sp.n. (from Argentina). 3) Notogonia, gen.n. (Type species: Hemiptycha erythropus Burmeister, 1835); N. costigera (Butler, 1878), sp.rev., comb.n. = Gelastogonia hirsuta Haviland, 1925, syn.n.; N. erythropus (Burmeister, 1835), comb.n. = Oxygonia altifrons Walker, 1851, syn.n.; N. rufiventris (Germar, 1821), comb.n. = Membracis signala Germar, 1821, syn.n., = Aconophora interna Walker, 1851, syn.n. = Thelia notala Walker, 1858, syn.n. = Oxygonia patruelis Stål, 1862, syn.n.; N. sinopae, sp.n. (from Brazil); N. conicornua, sp.n. (from Brazil).

Tegonotus tricarinatus n.sp., Floracarus claviger n.sp., Cosella callipodex n.sp. and Aculus verrucosus n.sp., Acarina, Eriophyoidea, from Brazil are described and figured.

Mielkeanthidium, gen.n. with long preepisternal carina on the mesepistemum is proposed for two species from Southern Brazil: Mielkeanthidium nigripes, sp.n. and Mielkeanthidium rubripes, sp.n. The females are characterized by the absence of the arolia and of the subbasal tooth of the mandibles, the males by the two large carinated lobes on the apical teigum.

Abracris dilecta Walker, 1870 (Orthoptera, Acrididae, Ommatolampinae) ate leafs of at least 14 plant species, in the families Asteraceae, Lamiaceae, Malvales (Sterculiaceae, Tiliaceae or Malvaceae), Poaceae, Fabaceae, Verbenaceae, Aristolochiaceae, Rubiaceae and Melastomataccae. Elephantopus mollis H.B.K. (Asteraceae) and Hyptis suaveolens Poit. (Lamiaceae) comprised 50% of the diet. The diet breadth of A. dilecta was compared to that of other 11 grasshopper species of the same sub-family, with rarefaction curves. The number of plant species eaten by A. dilecta was greater than that of nine other grasshopper species of the same sub-family (Rhachicreagra spp.) but was lower then two others (Microptylopteryx hebardi Rehn, 1905 and Rhachicreagra astytophallus Jago & Rowell, 1981). This results are discussed in view of the broad geographical range and possession of developed wings by A. dilecta, which contrasts with most Ommatolampinae grasshoppers.

The occurrence and distribution records of the association between Ophionereis reticulata (Say) and Malmgreniella variegata (Treadwell) in Northeastem Brazil, and the redescription of M. variegata, are included.