Classificação de fêmeas de Stomoxys calcitrans (L. ) (Diptera: Muscidae), de acordo com a idade fisiológica

With the purpose of maiking easier the determination of the physiological age of Stomosys calcitrans population, a classification based on the oocitary developtment and number of ovipositions was proposed. Female were reared under laboratory conditions, in individual cages and maintained in the presence of male for copulation. On the proper time, ovary and oviduct were removed and the stage of development was observed. Adult female were classified as: 1-New emerged female, 2 - Young nuliparous female, 3 - Old nuliparous female, 4 - Uniparousfemale, 5 - Two or three ovipositions times female, and 6 - Multiparous female.

A new species of Stylogaster from Brazil (Diptera: Conipidae)

A new species of Stylogaster is described from Roraima, Brazil. It belongs to the neglecta-group of species.

Classificação de Phaonia Robineau-Desvoidy (Diptera, Muscidae) da região neotropical: I. Considerações sobre a sinonímia de Bigotomyia Malloch, com descrição de uma espécie nova

Some considerations about the synonym of Bigotomyia Malloch, 1922 and Phaonia R.-D, 1830 are made. A new species, P. hugonis sp. n. is described from Peru and Equador.

Flebotomíneos (Diptera: Psychodidae) no estado de Roraima, Brasil: I. espécies coletadas nas regiões sul e central

Durante 1987, nas regiões sul e central do Estado de Roraima, foram realizadas coletas de flebotomineos nas bases de árvores e em armadilhas CDC colocadas a 1,5 e 10m de altura do solo. Foram obtidos 2812 espécimes, de 45 espécies: 35 na região sul e 27 na região cental; 18 espécies foram comuns as duas áreas e 21 estão sendo aqui assinaladas pela primeira vez no Estado. A presente publicação eleva a 54 o número de espécies conhecidad no Estado.

Generos Voriinos de Taquinidos chilenos (Diptera: Tachinidae, Voriini)

Nine genera and 16 species of Chilean Voriini Tachinid flies are reported in this paper, with a key to differentiate them, a list of recorded species, its geographic distibution within the country and known hosts. The examined examples belong and are deposited at the Collection of Insects of the Instituto de Entomología (UMCE), Santiago. Neochaetoplagia pastranai Blanchard, 1963, from Argentina, and Velardemyia ica Valencia, 1972, from Perú, are reported as present in Chile, while Nothovoria praestans n. gen. & sp., is described as a new monotypic genus.

A new species of Dasybasis Macquart from NW of Argentina (Tabanidae, Diptera, Insecta)

Female and male of Dasybasis diaguita n. sp. from high area of NW of Argentina is described and illustrated.

Predação e foresia (ocasional?) entre imaturos de Simuliidae (Diptera: Culicomorpha) e Asolene (Pomella) Megastoma (Sowerby, 1825) (Mollusca: Gastropoda: Ampullaridae)

The predation and phoretic association (occasional?) among simulids and mollusks are being registered here for the first time on the Neotropical region. These inter-relations observations were obtained among Asolene (Pomella) megastoma (Sowerby, 1825) and the simulids: Simulium (Thyrsopelma) Orbitale Lutz, 1910; Simulium (Psaroniocompsa) spp. The material studied is proceeding from the Uruguai river Hidrological Basin. Based on the mollusks natural habitat, it is here suggested his use as a possible integrated management element for simulids species which immature stages live on mighty river with rocks.

Simuliofauna do rio Marumbi, Morretes - PR, Brasil: microalgas como alimento de larvas de Simulium incrustatum Lutz, 1910 (Diptera, Simuliidae)

Estuda-se a ficoflórula do conteúdo intestinal de larvas do Simulium incrustatum, num período de 18 meses com 18 amostras, em 1983/84. A identificação até gênero, foi feita com material a fresco e material montato em lamínula. No conteúdo entérico das larvas, constataram-se 50 gêneros nas Divisões Chrysophyta (diatomáceas), Chlorophyta, Cyanophyta e Euglenophyta.

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.

Estudo sobre os Ceratopogonídeos de Minas Gerais: I - Descrição dos machos de Heteromyia chaquensis Duret & Lane, 1955 e Dasyhelea paulistana Forattini & Rabello, 1957 (Diptera, Ceratopogonidae)

This paper describes some results of a systematic survey of the Ceratopogonidae midges of the State of Minas Gerais, Brazil. Three species, Stilobezzia punctulata Lane, 1947, Heteromyia chaquensis Duret & Lane, 1955 and Dasyhelea paulistana Forattini & Rabello, 1957 were identified from a small lake, "Lagoinha" or "Olhos d'Água", near to the main lake of Lagoa Santa. The first descriptions of the males of Heteromyia chaquensis and Dasyhelea paulistana are presented.

Taxonomic study and redescription of Culex (Melanoconion) theobaldi (Lutz, 1904) (Diptera: Culicidae)

Based on type examination, Culex (Melanoconion) theobaldi (Lutz, 1904) is redescribed. The species Cx. (Mel.) chrysonotum Dyar & Knab, 1908, was put back as synonym of theobaldi. Besides, examination of Cx. (Mel.) chrysothorax (Newstead & Thomas, 1910) type, leads to retiring as synonym of theobaldi and considered it as "species inquirenda".

Descrição da fêmea, genitália do macho e larva de Ocyptamos sativus (Curran, 1941) (Diptera: Syrphidae)

The female, male genital apparatus and larva of Ocyptamus sativus are described. A short report of the predatory habits of this species is made.

Bionomia de mosquitos (Diptera: Culicidae) em áreas da Mata Atlântica no município de Itaguaí, estado do Rio de janeiro, Brasil: I. Frequência intra, peri e extradomiciliar

Along 24 consecutive months, from January 1984 to December 1986, mosquito captures were performed in a rural area of said municipality. Aiming to evaluate the comparative frequency of the mosquito species inside houses and in the immediate vicinity and far from houses, the captures were made in two types of domiciles - one permanently and the other only sporadically inhabited - as well as in surrounding woods. Variations in temperature, relative humidity and rainfall were locally recorded. A tendency for domiciliation became evident by the presence of Aedes scapularis in the human domiciles, mainly in those permantely inhabited. Culex quinquefasciatus showed to be adapted to live with humans also in rural areas, in which, in some instances, insecticides had to be used to keep in under control. Such observations, mainly in terms of Ae. scapularis, reinforce the possibility of those mosquitoes, under favourable conditions, becoming carries of arboviroses to humans in rural environments.

Revision of the subfamily Rogenhoferinae stat. nov. (Diptera, Cuterebridae)

The subfamily Rogenhoferinae stat. nov. (Diptera, Cuterebridae) is revised. Two genera are recognized: Rogenhofera Brauer (Type-species, trigonophora Brauer) and Andinocutereba Guimarães (Type-species, fassleri Guimarães). Five species are recorded in Rogenhofera, one R. lopesi is described as new. Key to species, illustrations and distribution are presented.

Aspectos ecológicos de Simulium goeldii (Diptera: Simuliidae): relação entre substrato e densidade de larvas

The distribution of larvae of Simulium goeldii was studies in four streams in upland tropical forest near Manaus, Amazonas, Brazil. In each month 32 points were sampled, each with an area of 30 x 50 cm. The areas of all substrates available were measured at each point. The larvae of S. goeldii were collected and later counted for all substrate types where larvae of this species were found. The available substrates were classified into eight types: dry leaves, green leaves, branches, fruits, detritus, rocks and sand; anly the first four types had larvae present. The Kruskal-Wallis test and analysis of variance indicated that the larvae occupy these substrates differently; the Newman-Keuls identified the following differences in intensity of occupation of the susbstrates: branchs differ from roots, dry leaves and green leaves, and green leaves differ from roots and dry leaves. The highest density of larvae was observed on green leaves. However, because the most abundant substrates in the study area were roots and dry leaves, I suggest that the latter two substrates are the most important ones for the esteblishment of this population of S. goeldii.