Spodoptera frugiperda J. E. Smith (Lepidoptera: Noctuidae) is a new pest in maize plants in Indonesia. This insect is originally from America and has spread to several countries causing yield losses. In the early 2019, this pests has attacked maize plants in the Sumatra region. This study aimed to know the presence of S. frugiperda in Bandung, Garut and Sumedang region. Surveys and observations were conducted in 14 subdistricts (6 subdistricts in Bandung, 6 subdistricts in Garut, and 2 subdistricts in Sumedang). The results showed that S. frugiperda has attacked maize plants in Bandung (Soreang), Garut (Leles, Banyuresmi, and Sucinaraja), and Sumedang (Jatinangor). Identification based on the typical morphological characters found in S. frugiperda larvae, such as the form of "Y" inverted on the head capsule and the patterns of black spots on the abdominal segments (square and trapezoidal forms). S. frugiperda larvae attacked plant growing points but the population was still low. The damage caused by S. frugiperda on maize was very similar to that caused by Mythimna separata, which was commonly found in the survey location of Bandung and Garut. It was looked different, the abundance of S. frugiperda larvae in Cilayung, Sumedang district was quite high. AbstrakKasus Serangan Ulat Grayak Jagung Spodoptera frugiperda J. E. Smith (Lepidoptera: Noctuidae) pada Tanaman Jagung di Kabupaten Bandung, Garut dan Sumedang, Jawa Barat

Fruit fly (Bactrocera dorsalis Complex) is one of the major pests in horticultural commodities in Indonesia. In this present study, a control method of formulating methyl eugenol and the addition of fruit essences was tested to attract B. dorsalis Complex. The objective was to find out the effect of fruit essences addition in the performance of methyl eugenol in attracting fruit flies and to obtain the most effective fruit essences for attracting male and female fruit flies. The experiment was conducted on mango plantation in Pasirmuncang village, Majalengka, West Java from March 2016 until December 2016. Several synthetic fruit essences which were separately added to methyl eugenol in this experiment were mango, citrus, guava, and starfruit essences. The results showed that the addition of fruit essences on methyl eugenol traps had the same effectiveness  or as good as  any single methyl eugenol trap. Moreover, the additions of mango and orange essences  were not effective enough in attracting female fruit flies, although the number of female fruit flies that were caught were more than the other treatments. IntisariLalat buah Bactrocera dorsalis Kompleks merupakan salah satu hama utama pada komoditas hortikultura. Pada penelitian ini, metode pengendalian dengan memformulasikan metil eugenol dan tambahan esens buah diuji untuk menarik B. dorsalis Kompleks. Tujuannya adalah untuk mengetahui efek penambahan esens buah pada kinerja perangkap metil eugenol dalam menarik lalat buah serta untuk mendapatkan esens buah yang efektif untuk menarik lalat buah betina. Penelitian ini dilakukan di perkebunan mangga di desa Pasirmuncang, Majalengka, Jawa Barat dari bulan Maret 2016 hingga bulan Desember 2016. Beberapa jenis esens buah sintetik yang secara terpisah ditambahkan pada metil eugenol pada percobaan ini adalah mangga, jeruk, jambu biji, dan belimbing. Hasil penelitian menunjukkan bahwa penambahan esens buah pada perangkap metil eugenol memiliki keefektifan yang sama baiknya dengan perangkap metil eugenol secara tunggal. Selain itu, penambahan esens mangga dan esens jeruk belum cukup efektif dalam menarik lalat buah betina meskipun jumlah lalat buah betina yang tertangkap lebih banyak dibandingkan dengan perlakuan lainnya.

Bioactivity Formulation of Seed Neem Oil Azadirachta indica (A.Juss) against Spodoptera litura (F)The purpose of this research was to know the influence of neem seed extract formulation (Azadin 50 EC) on the mortality, larvae development, larvae weight, and food consumption of Armyworm (Spodoptera litura). This research used randomized complete design with 6 treatments and 5 replications, i.e. control, formula at concentration of 0.2%, 0.4%; 0.8%; 1.6%; and 3.2%. Correlation of concentration neem seed oil formulation and mortality of test insect was analysed using probit analysis, weight of test larvae presented in mean and standard deviation, and development time and food consumption of test larvae analysed with analysis of varians. Formula Azadin 50 EC had LC50 value of 0.659% (0.550-0.781%) at 12 days after treatment. The mortality increased significantly in pupae stage that caused LC50 value become 0.152%. The formula prolonged development time, decrease the weight of test insect and decrease food consumption by the larvae.Keywords: Lethal concentration, Mortality, Growth derangement, ExtractABSTRAKPenelitian ini bertujuan untuk mempelajari perlakuan formulasi minyak biji mimba Azadin 50 EC terhadap mortalitas, perkembangan larva, bobot larva dan konsumsi pakan ulat grayak (Spodoptera litura F.). Metode Penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan 6 perlakuan dengan 5 kali ulangan. Perlakuan tersebut yaitu : Kontrol, konsentrasi formula minyak mimba Azadin 50 EC 0,2%; 0,4%; 0,8%; 1,6% dan 3,2%. Hubungan mortalitas dengan konsentrasi formula dianalisis menggunakan analisis probit, sedangkan data bobot larva, konsumsi pakan dan waktu perkembangan larva dianalisis dengan sidik ragam. Hasil penelitian menunjukkan bahwa formula minyak biji A. Indica memiliki nilai LC50 sebesar 0,659% (0,550-0,781%) terhadap larva instar 2 hingga instar 4. Pada fase pupa kematian kembali meningkat tajam sehingga nilai LC50 menjadi 0,152%. Perlakuan formula tersebut mengakibatkan perpanjangan waktu perkembangan, menurunkan bobot, dan menurunkan konsumsi pakan larva uji.Kata Kunci: Konsentrasi letal, Mortalitas, Gangguan perkembangan, Ekstrak

Abstract. Puspasari LT, Buchori D, Ubaidillah R, Triwidodo H, Hidayat P. 2021. Diversity of insect galls associated with Eucalyptus alba & E. urophylla in altitudinal zones in Timor Island, Indonesia. Biodiversitas 22: 2667-2679. We investigated the galling insects associated with two species of Eucalyptus, namely E. alba Reinw. and E. urophylla S.T. Blake in different altitudinal zones in Timor Island, Indonesia. This is the first report for Indonesia of the diversity patterns and community structures of galling insects in these two species of eucalyptus and the type of galls they produce. Surveys and data collection were carried out between October 2017 and June 2018 at different altitudes of secondary forest in Timor Tengah Selatan district, Timor. We visited five altitudinal zones (± 829 m asl., ± 942 m asl. ± 1,621 m asl., ± 1992 m asl., and ± 2457 m asl.) and selected 25 eucalyptus plants of 3 to 5 m in height in each altitudinal zone from which to collect insect galls. The galls were observed on leaves, upper leaves (shoots), outer leaves, symptomatic twigs and stems. The galls were taken to the laboratory for rearing of the insects they contained. A total number of 12 gall types were found in E. alba and 15 in E. urophylla from which 28 insect morphospecies were identified belonging to 16 families and five orders. The order Hymenoptera was represented by ten families: Bethylidae, Torymidae, Eulophidae, Eupelmidae Eurytomidae, Pteromalidae, Encyrtidae, Mymaridae, Braconidae and Scelinonidae while the order Diptera was represented by three families: Fergusoninidae, Cecidomyiidae and Chaoboridae. Galling species diversity ranged from 1.71 to 2.38 on the Shannon-Wiener index and 0.75 to 0.87 on the Simpson index and showed that the galling-insect communities were species-rich and composed of galling formers and very few inquilines. In the study, communities are categorized and structured according to different types of galling insects, including those that induce galling, those that are parasitoid, and those that are inquiline. Within the category of gall-forming insects in the two species of eucalyptus, Eulophidae is found to be the dominant family. Our field data makes an important contribution to basic knowledge of insect galling patterns in eucalyptus forests and constitutes baseline data for the implementation of pest control.

Insect gall inducers are important pests on eucalyptus that formed galls on leaves, twigs, and roots. Many eucalyptus clones have been cultivated and planted for timber production in Sumatera. A study of eucalyptus clone resistance to leaf galls was done in Mt. Mutis, East Nusa Tenggara Province. One of the aims of the study was to identify the parasitoids associated with gall inducers on eucalyptus clones. The research was conducted from October 2017 to July 2018. Fifty-seven clones with 15 plants for each clone were planted in Mt. Mutis, NTT. Galls were observed in the field biweekly for its characteristics and occurrences. Individual galls were collected for rearing to obtain the gall inducers and parasitoids. There were three species of parasitoids identified from two gall inducers. The parasitoid Eurytoma sp. (Hymenoptera: Eurytomidae) emerged from the gall caused by Fergusonina sp. (Diptera: Fergusoninidae) and Ophelimus sp. (Hymenoptera: Eulophidae), Bracon sp. (Hymenoptera: Braconidae) emerged from the gall caused by Fergusonina sp., and Megastigmus sp. (Hymenoptera: Torymidae) emerged from the gall caused by Ophelimus sp. Parasitoid with the highest population was Eurytoma sp. on the gall inducer Ophelimus sp. The basic information of the parasitoids and their hosts on eucalyptus is very valuable data for the development of a biological control program on eucalyptus.