Iracilda Maria de Moura Lima

Efeito repelente de azadiractina e óleos essenciais sobre Aphis gossypii Glover (Hemiptera: Aphididae) em algodoeiro

A repelencia de inseticidas botânicos tem se destacado como uma tatica promissora no controle alternativo de pragas agricolas e urbanas, podendo ser um dos componentes do manejo integrado de pragas. Objetivou-se com este trabalho identificar a repelencia de inseticidas botânicos sobre femeas apteras de Aphis gossypii Glover. Testes com chance de escolha foram realizados com discos de folha de algodoeiro, imersos nas caldas dos inseticidas e testemunha (agua destilada com DMSO a 2%). Utilizou-se azadirachtina (0,075%) e os oleos essenciais de Piper hispidinervum CDC, P. aduncum L., Cymbopogon winterianus (L.), C. citratus (D.C.) Stapf, Foeniculum vulgare Mill, Syzygium aromaticum (L.) Merrill e Perry, Cinnamomum zeylanicum Blume, Schinus terebinthifolius Raddi e Chenopodium ambrosioides L. na concentracao de 0,05%. C. citratus, C. winterianus, P. aduncum, S. terebinthifolius, azadirachtina e C. zeylanicum apresentaram os maiores percentuais de repelencia, 100; 84; 66,67; 64; 60,87 e 48% respectivamente e reduziram a producao de ninfas em 100; 92; 42,9; 87,5; 80,65 e 89,74%, apresentando resultados significativos pelo teste do χ2 ao nivel de 10% de probabilidade. Nos testes com F. vulgare (χ2 = 3,66, P = 0,05) as femeas de A. gossypii foram atraidas significativamente para os discos tratados e ocorreu um aumento na producao de ninfas nos resultados obtidos para F. vulgare (χ2 = 5,87, P = 0,02) e C. ambrosioides (χ2 = 14,31, P = 0,001).

Registro de Plantas Hospedeiras (Cactaceae) e de Nova Forma de Disseminação de Diaspis echinocacti (Bouché) (Hemiptera: Diaspididae), Cochonilha-da-Palma-Forrageira, nos Estados de Pernambuco e Alagoas

Opuntia ficus-indica Mill. and Nopalea cochenillifera (L.) Lyons (Cactaceae) are alternative food sources for cattle in drought areas of the Northeastern Region of Brazil. Diaspis echinocacti (Bouche) is the unique pest of these Cactacea species and it was previously detected on the following native host plants: Cereus jamacaru DC., Melocactus sp., Opuntia dillenii Haw. and O. inamoena K. Schum. The new record of native hosts are Cereus gounellei (Weber) Luetzelb., C. squamosus Gerke. and the exotic C. hildemannianus K. Schum., from drought areas; Pereskia grandifolia Haw. and Epiphyllum oxypetalum Haw., native species from tropical forest used as ornamental plants. D. echinocacti has not infested O. monacantha Haw. in the field and in laboratory bioessays. The dissemination of the neonate scale insect transported on the body surface of the predators Chilocorus nigrita (Fabricius) and Zagreus bimaculosus (Mulsant) Coccinellidae: Chilocorinae) was registered for the first time.

Registro da ocorrência de Cybocephalus sp. (Coleoptera: Nitidulidae) predando espécies-praga de diaspididae (Hemiptera), no estado de Alagoas

Specimens of Cybocephalus sp. were collected preying on Aspidiotus destructor (Signoret) infesting coconut trees (Dwarf cultivar) and on Diaspis echinocacti (Bouche) present on Opuntia ficus-indica Mill. and Nopalea cochenillifera (L.) Lyons (Cactaceae). In the later case the nitidulid was associated with another predator: Coccidophilus citricola (Brethes) (Coleoptera: Coccinellidae). The eggs were laid inside the scale of the diaspidid (one egg per scale); all life stages were detected. No sexual dimorphism was observed, and the natural sex ratio was 0.52 which represents a sexual proportion of 1.1 females : 1 male. Cybocephalus specimens were also collected preying on coccids on Alamanda cathartica L. (Apocynaceae) and on Morus alba L. (Moraceae).

Contribuição ao estudo de Brachiacanthadini (Coleoptera, Coccinellidae, Hyperaspinae)

Some species of Cyra are described and illustrations of pertinent characters are provided. New combinations of species is done. A key to four species of Cyra are added.

First Host Record for Winthemia analis (Macquart) (Diptera: Tachinidae: Exoristinae) in Brazil: Brassolis sophorae laurentii Stichel (Lepidoptera: Nymphalidae: Brassolinae)

Hymenopteran and dipteran endoparasitoids are reported acting as pupae endoparasitoids of Brassolis sophorae (L.). Concerning the scientific and economic importance of these interspecific relationship, and aiming to increase the knowledge related to natural and conservative biological control, the present study records Winthemia analis (Macquart) as larval-pupal parasitoid of Brassolis sophorae laurentii Stichel in the State of Alagoas, Brazil. This report presents some data on the bioecology of this parasitoid, on its distributional range in Brazil and a host species for the first time.

Parasitism of Brassolis sophorae laurentii Stichel (Lepidoptera: Nymphalidae, Brassolinae) Pupae by Conura morleyi (Ashmead) (Hymenoptera: Chalcididae, Chalcidini), in the State of Alagoas, Brazil

This scientific note reports the association between the parasitoid Conura morleyi (Ashmead) and Brassolis sophorae laurentii Stichel pupae in the State of Alagoas, Brazil. This parasitoid exhibits gregarious development, with production up to 146 individuals per pupa throughout a single opening. The sex proportion of the parasitoids was one male for one female.

Postembryonic development of Stiphra sp. X (Orthoptera: Proscopiidae) feeding on Psidium guaiava L. (Myrtaceae) leaves in the laboratory

Abstract Proscopiidae is an orthopteran family endemic to South America. Some species, such as Stiphra robusta, are considered sporadic pests in drought areas in the northeastern region of Brazil. This study establishes, for an undescribed Stiphra species, parameters for stadia and mortality that accompany its postembryonic development, as well as the sex ratio of females (no. female: total emerged adults) under laboratory conditions (67.4% mean relative humidity and 26.7° C). The adult stages were attained by three different developmental regimes involving different numbers of instars: four (4.8% of the population, males only), five (64.5%, sex ratio 0.24) and six instars (30.7%, sex ratio 0.94). The species is univoltine with the following mean duration for postembryonic development: males 71.8 d to complete four instars, 83.8 d for five instars, 110.7 d for six instars; females 85.6 d for five instars and 103.1 d for six instars. Overall mortality from neonates to adults was 13.1%, highest in the first instar.

Desenvolvimento pós-embrionário de Anteos menippe (Hübner) (Lepidoptera, Pieridae) em Cassia ferruginea Shrad. (Caesalpinaceae), em laboratório

In order to determine the duration of the post-embryonic development and its instars, eggs of Anteos menippe were collected from Cassia ferruginea leaves and were taken into the laboratory to register the dates of ecdysis. The post-embryonic development was (in days average ± standard error) 25.7 ± 0.4, the larval period 15.9 ± 0.3 represented 61.7% of the development and had five instars: L1 = 2.2 ± 0.1, L2 = 1.7 ± 0.2, L3 = 2.0 ± 0.1, L4 = 3.4 ± 0.1 and L5 = 6.4 ± 0.3. This last instar had an active phase (5.4 ± 0.3) and a prepupal phase (1 day long). The pupal period was 9.9 ± 0.2. The inactivity period (prepupa + pupa) 10.9 ± 0.2 days represented 42.2% of the post-embryonic development, and the active phase 57.8%. The egg viability was 91.6% and the survival, starting from neonate larvae, was 59.8%.

Revisão do gênero Oryssomus Mulsant (Coleoptera, Coccinellidae, Exoplectrinae, Oryssomini) e descrição de Gordonoryssomus, gen.n.

The Genus Oryssomus is revised and illustrations of pertinent characters are provided. A key to the genera of Oryssomini and to the species of Oryssomus and Gordonoryssomus are added. Gordonoryssomus. gen.n. is described: type species: Oryssomus deyrollei Crotch, 1874. A new species of Oryssomus, O. unimaculatus, sp.n.. from Amazonas, Brazil and three of Gordonoryssomus, G. nigrus, sp.n.. from Santa Cruz, Bolivia, G. nigripilosus. sp.n., from Espirito Santo, Brazil and G. delicatus, sp.n.. from Rio de Janeiro, Minas Gerais, Santa Catarina and Rio Grande do Sul, Brazil, are described.

Desenvolvimento pré-imaginal de Eueides isabella dianasa (Hübner) (Lepidoptera, Nymphalidae, Heliconiinae) em folhas de Passiflora edulis L. (Passifloraceae)

The preimaginal development of Eueides isabella dianasa (Hubner, 1806) feeding on leaves of P.edulis was studied under laboratory conditions. The eggs were collected soon after oviposition. Eclosion, and ecdisys (confirmed by the cephalic capsules), pupation and adult emergence were registered daily. The egg viability was 94.9%. The embryonic period (in days ± average standard error) was 4.25 ± 0.18. The 16.9 ± 0.34 larval period has five instars: 2.75 ± 0.2; 2.8 ± 0.2; 3.0 ± 0.1; 3.6 ± 0.2 and 4.6 ± 0.15. The active larval period was 15.83± 0.34, followed by an one day prepupal period and a pupal instar of 7.42 ± 0.15 (8.4 ± 0.15 inactive period of the post-embryonic development). The post-embryonic development was 24.25 ± 0.37. The total pre-imaginal period was 28.5 ± 0.44 long and may be considered short. The relative duration was 14.9% for the embryonic period and 85.9% for the post-embryonic. The use of the time in the post-embryonic development was 11.3%, 11.7%, 12.4%, 14.8%, 18.9%, 30.6% respectively for L1, L2, L3, L4, L5 and pupa. The larval period represented 65.3% while the inative (prepupa + pupa) 34.7%. The survival at the end of the development, considering the egg period, was 27.5% and considering the post-embryonic period, 30,0%. It was more evident on the 5th instar and at the pupal period, with 63.0% and 64.7%, respectively. This is the first record of Eueides isabella dianasa for the State of Alagoas, Brazil.