Fall Armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae) is a new pest in Indonesia that attacks corn plants. S. frugiperda larvae damage by eating the leaves to the growing point which can result in yield loss from 55 to 100%. This pest reportedly attacked corn plantations at the beginning of 2019 then spread almost throughout Indonesia. This study aims to study the distribution and population dynamic of S. frugiperda in Yogyakarta, Indonesia. Preliminary research was conducted in Sleman and Bantul regency covering all district in these areas, then the research was continued in six corn fields in Bantul regency (Kasihan, Pajangan, Sedayu) district. The result show that the S. frugiperda has been spread throughout Bantul and Sleman District. The populations of S. frugiperda are different in each location, the density of each larvae ranged from 0-1 larvae per plant. Larvae population increased by increasing the age of plants. Mortality of S. frugiperda larvae found in the field was relatively low. Mortality is caused by fungal infections, entomopathogenic bacteria, parasitoid insect Tachinidae sp.1 and predatory insects Coccinella transversalis. The population rate was influenced by the internal factors of S. frugiperda itself that is the life cycle.

Diversity of parasitic Hymenoptera in PTPN VIII oil palm plantation Cindali, Bogor. One group of important natural enemies in oil palm plantation is parasitic Hymenoptera. The purpose of this research is to know the diversity and fluctuation of parasitic Hymenoptera PTPN VIII Cindali oil palm plantation. This research was conducted in 6 blocks of oil palm in September 2014 -June 2015. There were 5 plots in every observation blocks 39.2 x 39.2 m in size, and used direct and indirect method. Direct method done by 5 plants in every plots was taken randomized to observed and taken the herbivore insects to reared until the parasitic Hymenoptera came out. Observation of cover crops conducted by 3 subplots determined diagonally in every plots 9.8 x 9.8 m in size and herbivore insects was observed and collected. Indirect methods used sweep net and yellow pan trap. The result of this research, 26 parasitic Hymenoptera families was found, with the Braconidae was the most morphospecies found and the most individual amount was Scelionidae. The abundance of parasitoid in every month fluctuated. Key words: diversity, fluctuation, parasitoid ABSTRAKKeanekaragaman Hymenoptera parasitoid pada perkebunan kelapa sawit PTPN VIII Cindali, Bogor. Salah satu musuh alami penting yang terdapat pada area perkebunan kelapa sawit adalah Hyemenoptera parasitoid. Beberapa faktor yang memengaruhi keanekaragaman dan kelimpahan Hymenoptera parasitoid di lapang adalah ketersediaan inang dan keanekaragaman tanaman. Penelitian ini bertujuan melihat keanekaragaman dan fluktuasi Hymenoptera parasitoid yang berada pada area perkebunan kelapa sawit PTPN VIII Cindali. Penelitian dilakukan pada perkebunan kelapa sawit PTPN VIII Cindali, dengan menggunakan 6 blok kelapa sawit dan dilakukan dari September 2014 -Juni 2015 dengan pengamatan sebulan sekali. Pada setiap blok terdapat 5 plot yang berukuran 39,2 x 39,2 m, dengan menggunakan metode secara langsung dan tidak langsung. Metode secara langsung dilakukan dengan cara setiap blok diambil 5 tanaman secara acak untuk diamati dan diambil serangga herbivora untuk dipelihara sampai keluar parasitoidnya. Pengamatan vegetasi bawah ditentukan 3 subplot berukuran 9,8 x 9,8 m yang diambil secara diagonal. Pengamatan dan pengambilan serangga herbivora dilakukan di dalam subplot tersebut. Metode tidak langsung dengan menggunakan sweepnet dan perangkap kuning. Hasil penelitian ditemukan 26 famili Hymenoptera parasitoid, dengan morfospesies terbanyak adalah famili Braconidae dan jumlah individu terbanyak adalah famili Scelionidae. Kelimpahan populasi Hymenoptera parasitoid pada setiap bulan mengalami fluktuasi.

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AbstrakCabai merupakan tanaman yang banyak ditanam masyarakat. Selain dapat dikonsumsi, cabai juga dapat dijual untuk tambahan penghasilan. Perawatan tanaman cabai dewasa ini banyak menggunakan pestisida, padahal terdapat agen biologi yang dapat digunakan dengan lebih efektif dan ramah lingkungan. Penelitian ini bertujuan untuk menghitung tingkat keanekaragaman dan mengetahui jenis serangga musuh alami yang terdapat pada lahan cabai di Desa Wiyoro, Kecamatan Banguntapan, Kabupaten Bantul, Yogyakarta. Pengambilan sampel menggunakan perangkap sumuran (pitfall trap), nampan kuning berisi larutan detergent dan jaring serangga. Jaring serangga diayunkan sepanjang bedengan tanaman cabai secara vertical. Luas area pengamatan yang digunakan dalam penelitian ini adalah 20 x 100 m. Pemasangan nampan kuning dan pitfall dipasang sebanyak 15 buah untuk masing-masing jebakan. Pengambilan sampel dilakukan sebanyak 8 kali dalam 2 bulan. Hasil yang didapatkan berupa 7 ordo serangga sebagai musuh alami pada lokasi penelitian. Jumlah famili paling banyak ditemukan berasal dari ordo Hymenoptera 23 famili dan terendah Dermaptera dan Strepsiptera (1 famili). Spesies paling banyak sebagai musuh alami adalah Paratrechina longicornis. Kesimpulan penelitian ini adalah ordo serangga yang ditemukan sebagai musuh alami pada lokasi penelitian berjumlah 7, dengan jumlah famili terbanyak dari ordo Hymenoptera. Famili dengan jumlah individu terbanyak sebagai musuh alami adalah Formicidae dari Hymenoptera.Abstract Chili is one of the most widely planted plants. Besides being able to consumed, it also can be sold for additional income. Nowadays treatment on chili uses a lot of pesticides, even though there are biological agents that can control pest more effectively and environmentally friendly. This study aims to count the diversity index and determine species of natural enemy found in chili fields in Wiyoro, Banguntapan, Bantul, Yogyakarta. Sampling used insect nets, yellow pans, and pitfall. Insect nets were swung along the beds of chillies vertically. The area of this research was 20 x 100 m. Yellow trays and pitfalls were installed 15 units for each trap. Sampling was done 8 times in 2 months. The results that obtained were there were 7 orders of insects that became natural enemies at the research site, with the most number of families was Hymenoptera with 23 families and the lowest were Dermaptera and Strepsiptera with 1 family. The most commonly found species that act as natural enemies are Paratrechina longicornis. The conclusion of this study was the order of insects found as natural enemies at the research site were 7, with the largest number of families was in Hymenoptera. Family with the highest number of individuals as natural enemies was Formicidae from Hymenoptera.

Telenomus sp. as a biological agent, can be used to control a new pest, namely Spodoptera frugiperda which attacks maize in Indonesia. The purpose of this study was to count the number of eggs of S. frugiperda parasitized by Telenomus sp. and to calculate the level of parasitization of the parasitoid Telenomus sp. against S. frugiperda in the laboratory. Research method that used in this research were searching for S. frugiperda caterpillars and preparation of Telenomus sp. The data analysis used in this research was inferential analysis. The results of this study were tested using the normality test, as well as the homogeneity test, and continued with the Kruskal Wallis test. The results showed that parasite level of parasitoid in tube I, tube II, tube III, and tube IV, namely 0%, 23.5%, 18.3%, 11.3%, and the calculation of sex ratio on Telenomus sp. were 2 females and 1 male were found. This study concludes that the number of parasitoids Telenomus sp. affects the level of egg parasitization.©2020 JNSMR UIN Walisongo. All rights reserved.