Streblidae (Diptera, Hippoboscoidea) em morcegos (Chiroptera, Phyllostomidae) no nordeste do Rio Grande do Sul, Brasil

A survey of the Streblidae batflies on the phyllostomid bats was conducted in the northeastern Rio Grande do Sul State, Brazil, during 1997. Hundred thirty three streblids were collected on 44 parasited hosts. Eleven species of batflies (Trichobius dugesii Townsend, 1891, T. tiptoni Wenzel, 1976, Trichobius sp., Paratrichobius longicrus (Miranda Ribeiro, 1907), Megistopoda aranea (Coquillett, 1899), M. proxima (Séguy, 1926), Exastinion clovisi (Pessoa & Guimarães, 1936), Paraeuctenodes longipes Pessoa & Guimarães, 1936, Anastrebla modestini Wenzel, 1966, A. caudiferae Wenzel, 1976 and Metelasmus pseudopterus Coquillett, 1907) were found on six species of phyllostomid bats (Artibeus lituratus (Olfers, 1818), A. fimbriatus Gray, 1838, Sturnira lilium (E. Geoffroy, 1810), Glossophaga soricina (Pallas, 1766), Anoura caudifera (E. Geoffroy, 1818) and A. geoffroyi Gray, 1838). All records are new for the Rio Grande do Sul and Anastrebla caudiferae is firstly recorded in Brazil. Differences in the batflies community composition in Artibeus fimbriatus and A. lituratus are discussed.

Redescrição de duas espécies neotropicais de Empididae (Diptera) descritas por Curran e revalidação do gênero Porphyrochroa

The two species described in the genus Axelempis Curran, 1931, junior synonym of Macrostomus Wiedemann, 1817, Axelempis fulvithorax Curran, 1931 and A. fasciventris Curran, 1931 are redescribed from the types. The first one remains in the genus Macrostomus and the second one is transferred to Porphyrochroa Melander, 1928, here revalidated.

Two new species of the Drosophila serido sibling set (Diptera, Drosophilidae)

Drosophila antonietae sp. nov. and D. gouveai sp. nov. are members of the D. buzzatii cluster of the D. repleta species group of the genus Drosophila. They can be distinguished from their cryptic species, D. borborema Vilela & Sene, 1977, D. koepferae Fontdevila & Wasserman, 1988, D. serido Vilela & Sene, 1977, and D. seriema Tidon-Sklorz & Sene, 1995 by morphological, genetic and ecological criteria.

Influência do ciclo lunar na captura de Aedes scapularis (Diptera, Culicidae) na Mata Atlântica do Paraná

From October 1995 to January 1996 Aedes (Ochlerotatus) scapularis (Rondani, 1948) was studied in a small area of the Atlantic Forest, Serra do Marumbi, Morretes, Paraná, Brazil. Adults were captured with Shannon light traps for 48 nights, representing 12 nights for seven time intervals. Traps were operated from dusk to dawn. The influences on flight activity of the lunar phase, ambient temperature, relative humidity, and rainfall were analyzed. Ae. scapularis had a flight behaviour different in each of the four lunar phases. In relation to flight period, the species showed higher activity during the first three lunar intervals. Among the climatic variables, temperature and relative humidity positively influenced flight activity during the night.

Descrição de uma espécie nova de Thysanopsis (Diptera, Tachinidae)

Thysanopsis guimai sp. nov. from Brazil (Mato Grosso) is the second species described for this genus. Redescription of Thysanopsis albicauda Townsend, 1917, and new definition for the genus are done.

Moreiria wiedemanni sp. nov. e redescrição de M. maura (Diptera,Tachinidae)

The second new species of the genus Moreiria is described from Brazil (São Paulo, Santa Catarina). The male of Moreiria maura Townsend, 1932 is recognized and a new definition for the genus is presented.

Influence of quantities of brewer yeast on the performance of Anastrepha obliqua wild females (Diptera, Tephritidae)

Using artificial solid diets, experiments were performed with Anastrepha obliqua (Macquart, 1835) wild females in order to verify the influence of different quantities of brewer yeast on the performance and compensation behavior to unbalanced diets ingestion. The observed parameters were egg production, ingestion, diet efficiency and survival in the reproductive phase. Results indicated that there was no compensatory ingestion to different quantities of yeast and that the diet with 12.5g of yeast provided the best performance. The absence of compensatory ingestion is discussed based on the yeast phagostimulation and on the costs involved in solid diets ingestion. The relation between the analyzed parameters and the protein quantities in the diet were discussed.

New termitophilous Diptera from the neotropics, by Charles H. Seevers.

v.24:no.18(1941)

New species of Leptocera Olivier in the burrows of the pocket gopher, Geomys Bursarius Illinoensis Komarek and Spencer, found in Illinois (Diptera: Sphaeroceridae) [by] O.W. Richards.

v.44:no.19(1964)

A new genus of batflies from Guatemala (Diptera Acalypterae: Streblidae) [by] Henry S. Dybas and Rupert L. Wenzel.

v.31:no.19(1947)

Descrição de Oropezella pseudotetraocellata sp. nov. (Diptera, Empididae, Ocydromiinae)

A new species from southeastern and southern of Brazil is described and illustrated, Oropezella pseudotetraocellata.

Chaetogyne zoae sp. nov. (Diptera, Tachinidae)

A third new species of Chaetogyne Brauer & Bergenstamm, 1889 is described from Brazil (Paraná, Santa Catarina, Rio Grande do Sul) and a key for the three species of this genus is presented.

Oviposition preference hierarchy in Ceratitis capitata (Diptera, Tephritidae): influence of female age and experience

The influence of two factors, age and previous experience, on the oviposition hierarchy preference of Ceratitis capitata (Wiedemann, 1824) females was studied. Two populations were analyzed: one reared in laboratory during 17 years and the other captured in nature. In the first experiment the oviposition preference for four fruits, papaya, orange, banana and apple was tested at the beginning of oviposition period and 20 days past. The results showed that the wild females as much the laboratory ones had an oviposition preference hierarchy at the beginning of peak period of oviposition. However this hierarchic preference disappeared in a later phase of life. In the second experiment the females were previously exposed to fruits of different hierarchic positions and afterwards their choice was tested in respect to the oviposition preference for those fruits. The results showed that there was an influence of the previous experience on the posterior choice of fruits to oviposition when the females were exposed to fruits of lower hierarchic position.

Gonadal hybrid dysgenesis in Drosophila sturtevanti (Diptera, Drosophilidae)

The occurrence of hybrid dysgenesis was investigated in Drosophila sturtevanti Duda, 1927 using diagnostic crosses similar to those used for induction of dysgenics traits in D. melanogaster. Reciprocal test crosses were made, at 27° C, between an old laboratory strain of D. sturtevanti (COL, from Colombia), assumed to be an M'-like strain, and eight freshly collected strains from several natural populations. The gonadal dysgenesis indices were under 10% in most of crosses, except in hybrids of COL with I27, a strain from Minas Gerais (Brazil), in which the index values were moderate in both directions of crosses (25.71 and 12.87). The smallest productivity was also observed in hybrids of females COL mated to I27 males. No causal relationship between the observed gonadal dysgenesis and mobilization of P element or another transposable element could be effectively established.

Larvae of Alaus myops, A. oculatus, Chalcolepidius porcatus, Hemirhipus apicalis and generic larval characterization (Elateridae, Agrypninae, Hemirhipini)

Larva of Hemirhipus Latreille, 1825 is herein described for the first time. Larvae of Chalcolepidius porcatus (Linnaeus, 1767), from Peru, and Hemirhipus apicalis Candèze, 1857, from Argentina, are described and of Alaus myops (Fabricius, 1801), from USA (Illinois and Maryland), and A. oculatus (Linnaeus, 1758), from USA (Illinois and Florida), are redescribed and illustrated. A comparison among the known larvae in each genus is presented. An historical review and the larval characterization of five genera and fourteen species of Hemirhipini genera are also included.