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INDONESIA
Jurnal Entomologi Indonesia
Published by Perhimpunan Entomologi Indonesia
ISSN : 18297722     EISSN : 20890257     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Jurnal Entomologi Indonesia (JEI) publishes original research papers and short communications that covers the basic and applied aspect of insects and mites or other arthropods in agriculture, forestry, human and animal health, and natural resources and environmental management. The journal is published by Perhimpunan Entomologi Indonesia (Entomological Society of Indonesia). JEI was first published at the beginning of 2004 with twice per year in frequency on March and September. Since 2015, Jurnal Entomologi Indonesia has been published three times per year on March, July, and November.
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Articles 9 Documents
 1 
Search results for , issue "vol 23 no 2 (2026)" : 9 Documents clear
Predatory behavior and predation efficiency of Sycanus sp. against Metisa plana Walker: Implications for biological control in oil palm Zahlul Ikhsan; Mona Aisyah; Nalwida Rozen; Sri Heriza; Moustafa Sabry Bakry; Amsar Maulana; Nur Ain Izzati Mohd Zainudin
Jurnal Entomologi Indonesia Vol 23 No 2 (2026): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.23.2.1

Abstract

Bagworm (Metisa plana Walker) is a major defoliating pest of oil palm, causing significant yield losses during outbreaks. Biological control using predatory insects offers an environmentally sustainable alternative to chemical insecticides. This study evaluated the predatory performance of Sycanus sp. against M. plana larvae and assessed the effect of predator density on prey suppression under laboratory conditions. A completely randomized design was used with five predator-density treatments (1, 2, 3, 4, and 5 predators per 10 larvae) and ten replications. Predator performance was evaluated based on prey-search duration, handling time, larval mortality, and prey consumption. The initial prey-search duration ranged from 2.11 to 2.25 min, while subsequent searches ranged from 1.69 to 2.04 min. Prey-handling time remained relatively constant across treatments (58.1–59.1 min). Predation by Sycanus sp. substantially reduced M. plana populations within three days, with the highest mortality occurring on the first day after predator introduction. Predator density significantly increased prey consumption, which rose from 1.26 ± 0.21 larvae at one predator to 4.43 ± 0.19 larvae at five predators. A strong positive relationship was observed between predator density and prey consumption (y = 0.795x + 0.451; R² = 0.9531). Although the highest prey suppression occurred at the greatest predator density, a ratio of two Sycanus sp. adults per ten M. plana larvae provided a favorable balance between prey suppression and predator deployment efficiency. These findings support the potential use of Sycanus sp. as a biological control agent in sustainable oil palm integrated pest management programs.
Impact of fungal uptretreatment of palm kernel cake on the growth and development of black soldier fly (Hermetia illucens L.) larvae in a total feeding system Intan Josefin Purba; Intan Ahmad; Ramadhani Eka Putra
Jurnal Entomologi Indonesia Vol 23 No 2 (2026): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.23.2.125

Abstract

Black soldier fly (BSF) larvae (Hermetia illucens L.) are recognized as effective agents for the bioconversion of organic waste, including agricultural residues. The bioconversion efficiency of BSF larvae is highly dependent on the substrate and is considerably reduced when the substrate is rich in cellulose. Palm kernel cake (PKC), a by-product of palm oil processing with considerable potential for upcycling, contains high levels of lignocellulose. Its lignin content can impede nutrient release, making pretreatment essential before its use as a feed substrate. This study evaluated the growth and developmental performance of BSF larvae reared on PKC subjected to biological pretreatment with Rhizopus oligosporus (RO), Phanerochaete chrysosporium (PC), and Aspergillus niger (AN), in combination with a total feeding system (TFS) where feed was provided only once at the start of rearing. Fungi were cultured on PKC for 10 days before being fed to six-day-old BSF larvae; non-fermented PKC and commercial chicken feed served as controls. Larval performance was assessed by measuring dimensional growth (length and weight) and survival rate (SR) across five replicates per treatment. All treatments exhibited high survival rates (85.3 ± 3.02-91.4 ± 5.69%), with the highest values observed in the positive control (91.4 ± 5.69%) and the AN treatment (91.4 ± 3.25%), and the lowest in the negative control (85.3 ± 3.02%). Among the fermented treatments, AN resulted in the highest larval growth rate (6.42 ± 0.28 mg/larva/day), which was significantly higher than that of the non-fermented negative control (4.81 ± 0.21 mg/larva/day) (p < 0.05). These results suggest that PKC pretreatment via A. niger fermentation is a suitable strategy for improving PKC quality as a feed substrate for BSF larvae.
Residu emamektin benzoat dan propineb pada sawi putih: Efek interval pra-panen, pengetahuan, dan sikap petani : Emamectin benzoate and propineb residues in Chinese cabbage: Effects of pre-harvest interval, farmers’ knowledge, and attitudes Wesi Febrianti; Dadang Dadang; Ruly Anwar
Jurnal Entomologi Indonesia Vol 23 No 2 (2026): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.23.2.115

Abstract

Chinese cabbage (Brassica rapa) is an important horticultural vegetable with high nutritional and economic value and is widely consumed by the community. However, the intensive use of synthetic pesticides in its cultivation may leave chemical residues that can pose health risks if they exceed the permitted maximum residue limits (MRLs). This study aimed to evaluate the concentration of emamectin benzoate and propineb residues in Chinese cabbage based on different pre-harvest application intervals and to identify farmers’ levels of knowledge and attitudes toward pesticide use. The research consisted of two activities: a survey and a field experiment. The survey involved 40 farmers and was conducted in X Koto Subdistrict, Tanah Datar Regency, West Sumatra. The field experiment was arranged in a randomized complete block design consisting of seven treatments combining an insecticide with emamectin benzoate (30 g/l) and a fungicide with propineb (70%), applied at intervals of 3, 7, and 14 days before harvest, including a control, with three replications. Residue analysis was performed using liquid chromatography. The results showed that propineb residue levels decreased from 0.0105 mg/kg at 3 days before harvest to 0.0035 mg/kg at 7 days before harvest and were undetectable at 14 days before harvest. Meanwhile, emamectin benzoate residues ranged from 0.0065 to 0.0075 mg/kg, all of which were below the Indonesian maximum residue limits. Farmers knowledge was generally moderate, while most farmers had poor attitudes toward pesticide use, highlighting the need for better education on proper pesticide use and compliance with the pre-harvest interval. Longer pre-harvest intervals resulted in lower pesticide residue levels in the plants. These findings emphasize the importance of applying appropriate pre-harvest intervals to ensure food safety and support good agricultural practices.
Variation in body size and morphometric trait of Elaeidobius kamerunicus Faust. (Coleoptera: Curculionidae) from Indonesia, Malaysia, and Cameroon Van Basten Tambunan; Bandung Sahari; Satyoso Hartjotedjo; Cahyo Sri Wibowo; Walter Ajambang; Culbertson Enow Etta; Damayanti Buchori; Purnama Hidayat
Jurnal Entomologi Indonesia Vol 23 No 2 (2026): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.23.2.99

Abstract

Elaeidobius kamerunicus Faust. is an insect pollinator introduced from Africa and has become the main pollinator of oil palm (Elaeis guineensis Jacq.) in Indonesia. The presence of E. kamerunicus in Indonesia is reported to increase the fruit set of oil palm. However, the success of pollination shown by the proportion of normal fruit fluctuates under field conditions and tends to decline from year to year. The ineffectiveness of this pollination is caused by the reduced visitation activity of E. kamerunicus to female inflorescences. The performance of pollinator, including the issue of body size is thought to be one of the factors that cause a decrease in efficiency and effectiveness of pollination. This study aimed to determine the differences in body size of E. kamerunicus from Indonesia, Malaysia and Cameroon specifically. The studies were carried out from October 2018 to May 2019. Adults of E. kamerunicus were taken from male anthesising flowers, ten parts of the body were measured. This study showed that there were variations in the body size of E. kamerunicus among Indonesia, Malaysia and Cameroon. The largest body size was found in E. kamerunicus from Cameroon, whilst the smallest body size was observed in Malaysian populations for both male and female. The difference in body length (BL) between native and introduced populations reached 0.22 mm (males) and 0.32 mm (females). These findings indicate that introduced populations exhibit smaller body sizes compared to native populations. Information on the variation in the body size in this study might be valuable for developing management strategies to increase oil palm fruit set in Indonesia.
Molecular detection of VGSC and Ace-1 mutations in Aedes aegypti (Linnaeus) from Dumai Seaport, Indonesia Khairil Ardhi; Tri Baskoro Tunggul Satoto; Sitti Rahmah Umniyati
Jurnal Entomologi Indonesia Vol 23 No 2 (2026): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.23.2.108

Abstract

The geographic distribution of mosquitoes, including Aedes aegypti (Linnaeus), the primary vector of dengue, is strongly influenced by international and intercity transportation. This study aimed to assess insecticide resistance status and to identify mutations in the VGSC (Nav) and Ace-1 genes in Ae. aegypti populations collected in Dumai port, Indonesia. Adult female mosquitoes were tested for resistance to permethrin, deltamethrin, and malathion using WHO standard bioassay methods. Point mutations were detected through PCR amplification and sequencing. The results showed resistance to pyrethroids (permethrin and deltamethrin), while susceptibility to malathion was maintained. Three kdr mutations (F1534C, V1016G, and S989P) were identified; however, no Ace-1 mutation (G119S) was detected. These findings highlight the importance of continuous resistance monitoring, particularly in high-risk transportation hubs, to support effective vector control strategies.
Uji kombinasi biner beberapa senyawa aktif asal minyak cengkeh terhadap kutu daun kedelai Aphis glycines Matsumura (Hemiptera: Aphididae): Binary combination assay of several active compounds from clove oil against the soybean aphid Aphis glycines Matsumura (Hemiptera: Aphididae) Stela Aria Feriska; Yusup Hidayat; Yani Maharani
Jurnal Entomologi Indonesia Vol 23 No 2 (2026): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.23.2.136

Abstract

The soybean aphid, Aphis glycines Matsumura, is a major soybean pest that can reduce crop yield. Botanical insecticides derived from clove oil, which contains eugenol, β-caryophyllene, and α-humulene, as well as their derivatives caryophyllene acetate and caryophyllene formate, may provide environmentally friendly alternatives to synthetic insecticides. This study evaluated the effects of binary combinations of these compounds on the mortality and nymph production of A. glycines. The experiment was arranged in a completely randomized design (CRD) with 11 treatments consisting of ten binary combinations and a control, each with three replications. Treatments were applied by contact spraying on ten wingless adult A. glycines at concentrations of 0.5% and 1%. The results showed that binary combinations primarily affected nymph production.  At 0.5%, several combinations, including eugenol+α-humulene, eugenol + β-caryophyllene, eugenol+caryophyllene formate, α-humulene+β-caryophyllene, α-humulene+caryophyllene acetate, α-humulene+caryophyllene formate, and β-caryophyllene+caryophyllene acetate, significantly reduced nymph production with suppression levels of 75–88%. At 1%, all combinations significantly reduced nymph production with suppression ranging from 78–88%. The β-caryophyllene+caryophyllene acetate combination also showed significant mortality. However, the effect was relatively low, reaching 33.36% at 0.5% and 36.67% at 1% at 48 hours after treatment. These findings indicate the potential of clove oil-derived compounds and their derivatives for A. glycines management, particularly through sublethal effects that suppress reproduction.
Dynamic profiling of volatile organic compounds in IR64 rice infested with Sitophilus oryzae (Linnaeus): An exploratory HS-SPME-GC-MS study for initial biomarker screening Nasrul Friamsa; Witjaksono Witjaksono; Suputa Suputa; Kuwat Triyana
Jurnal Entomologi Indonesia Vol 23 No 2 (2026): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.23.2.145

Abstract

This study examines the volatile organic compounds (VOCs) as potential indicators of the presence of rice weevils, Sitophilus oryzae (Linnaeus), in IR64 rice grains. Conventional detection methods have limitations because pest infestation is detected after signs of pest damage have appeared. Meanwhile, identification of VOCs resulting from host-pest interactions can be used as chemical indicators in the early detection of infestation. This experiment used a sample unit of 10 g of rice in a vial infested with 10 adults S. oryzae, observed over five weekly intervals. VOCs from the sample headspace were extracted using headspace solid-phase microextraction (HS-SPME) and then analyzed using gas chromatographic-mass spectrometry (GC-MS). The results showed a shift in VOC composition, with the peak-area abundance of aldehyde compounds originating from plants decreasing while hydrocarbon compounds originating from insects became dominant. Aldehyde compounds, for example hexanal, decreased from 3.76 × 10⁸ in the control to 1.12 × 10⁸ in the fourth week, while hydrocarbon compounds, such as 3,6-dimethylundecane, increased from 5.67 × 10⁷ to 2.82 × 10⁸. The volatile compounds that most affected changes in the VOC profile include hydrocarbon compounds with high VIP scores and positive log2FC, such as 3,6-dimethylundecane (1.68 and 2.31) and pentadecane (1.40 and 1.97), while aldehyde compounds with high VIP scores and negative log2FC values include dodecanal (1.60 and -1.60) and hexanal (1.49 and -1.79). These aldehyde and hydrocarbon compounds with high VIP > 1 and log2FC are thought to have the strongest contribution to changes in the VOC profile due to S. oryzae infestation and may be preliminary information for developing an early detection model in rice storage. However, further verification is needed, including experimental replication across several rice varieties and storage conditions.
In Memoriam: Prof. Dr. Ir. Deciyanto Soetopo, MS. Editor JEI
Jurnal Entomologi Indonesia Vol 23 No 2 (2026): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Jurnal Entomologi Indonesia (JEI) mengenang dengan penuh hormat Prof. Dr. Ir. Deciyanto Soetopo, MS., seorang peneliti dan profesor riset yang telah memberikan kontribusi penting bagi pengembangan ilmu entomologi, perlindungan tanaman, dan penelitian hama tanaman di Indonesia. Beliau merupakan bagian dari Dewan Penyunting (Editorial Board) Jurnal Entomologi Indonesia selama 2012–2025, dan dedikasinya selama lebih dari satu dekade menjadi bagian penting dalam perjalanan dan perkembangan JEI. Lahir di Surabaya pada 4 Desember 1954, Prof. Deciyanto Soetopo menempuh pendidikan sarjana dan magister di Institut Pertanian Bogor (IPB) serta meraih gelar doktor (Ph.D.) dari University of the Philippines Los Ban os, Filipina. Kepakaran beliau mencakup hama dan penyakit tanaman, Pengendalian Hama Terpadu (PHT), bioprospeksi, serta pembangunan perkebunan berkelanjutan. Sepanjang lebih dari empat dekade pengabdiannya sebagai peneliti di Kementerian Pertanian/dan Badan Riset dan Inovasi Nasional, beliau berkontribusi dalam penelitian berbagai komoditas perkebunan, antara lain lada, kelapa sawit, tebu, kapas, cengkeh, kelapa, dan tembakau. Beliau juga dipercaya mengemban berbagai posisi kepemimpinan serta terlibat dalam program penelitian dan pengembangan pertanian nasional maupun kerja sama penelitian internasional. Karya, pemikiran, dan dedikasinya telah memberikan manfaat yang luas bagi ilmu pengetahuan serta komunitas penelitian pertanian di Indonesia. Dalam kapasitasnya sebagai anggota Dewan Penyunting JEI, pengalaman dan kepakaran Prof. Deciyanto memberikan perspektif ilmiah yang berharga dalam mendukung proses editorial dan menjaga mutu publikasi. Pengabdian beliau turut memperkuat komitmen JEI untuk menghadirkan publikasi ilmiah yang kredibel, berkualitas, dan berdaya saing di tingkat internasional. Dewan Penyunting dan seluruh keluarga besar Jurnal Entomologi Indonesia menyampaikan penghargaan dan terima kasih yang mendalam atas pengabdian, dedikasi, dan kontribusi Prof. Dr. Ir. Deciyanto Soetopo, MS. Jejak keilmuan dan pengabdian beliau akan senantiasa menjadi bagian dari sejarah serta perjalanan Jurnal Entomologi Indonesia. Semoga almarhum memperoleh tempat terbaik di sisi Tuhan Yang Maha Esa, dan keluarga yang ditinggalkan diberikan kekuatan serta ketabahan. Jurnal Entomologi Indonesia, 2026
Detection of cuticle thickening in pyrethroid-resistant Aedes aegypti (Linnaeus) from West Sumatra, Indonesia Resti Rahayu; Mairawita Mairawita; Risa Ukhti Muslima
Jurnal Entomologi Indonesia Vol 23 No 2 (2026): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.23.2.156

Abstract

Aedes aegypti (Linnaeus) is the primary vector of dengue virus. Prolonged and widespread use of insecticides, particularly pyrethroids for household vector control, has led to increasing insecticide resistance in Ae. aegypti populations. Cuticle thickening has been reported as a resistance mechanism, yet evidence for this mechanism in Ae. aegypti from Indonesia is still limited. This study aimed to investigate cuticle thickening in pyrethroid-resistant Ae. aegypti populations from Gunung Pangilun Village, Padang City, West Sumatra, Indonesia. Mosquito samples were collected using egg traps (ovitraps) and reared until the adult stage. Susceptible and resistant populations were determined by a WHO-based bioassay with impregnated paper 0.025% alpha-cypermethrin, collecting 10 individuals per group, and cuticle thickness was measured at the mid-tibia using scanning electron microscopy (SEM). The results found that cuticle thickness in the resistant group was 1.28-fold thicker than that in the susceptible group. This study suggests the involvement of cuticular penetration resistance, which may reduce the efficacy of contact insecticides such as pyrethroids, as well as provides initial evidence supporting cuticle thickening in pyrethroid-resistant Ae. aegypti from Indonesia. These findings emphasize the need to strengthen resistance management strategies, insecticide rotation, and integrated vector control approaches to reduce further increases in resistance.

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