Mangrove ecosystem is a complex tropical forest ecosystem that is able to live and to adapt in coastal environments.Unfortunatelly, its existence is vulnerable to the environmental change. Unless utilization of mangrove forest is notfollowed by enrichment and rehabilitation, it will lead to degradation of logged-over land such as pest and diseaseinfestation. The pest study was conducted in mangrove stands in PT. Bina Ovivipari Semesta (BIOS), Kubu Raya, WestKalimantan. The result of study consisted of three sample plots obtained from the average of mangrove pest on thecutting area of 2017 (93.33%), attack intensity (28%). Additionally, the average of cutting area of 2012 were at 91.95%and attack intensity (29%) while the protection forest obtained the average of attack at 79.23% and attack intensity(21.87%). The results of pest identification of mangrove arboretum were 9 pests, including pagoda bagworm (Pagodiellaspp.), bagworm (Acanthopsyche sp.), krama / tree climbing crab (Episesarma spp.), nacerdes beetle (Xanthochroa sp.),aphid (Prociphilus tessellatus), barnacles (Balanus amphitrite), snails (Gastropoda Class), cobwebs, leatherleaf slugs(Vaginula bleekeri).Key words: Kubu Raya, Mangrove, Pagodiella spp., PT. BIOS

Kutu lak (Laccifer lacca Kerr) (Homoptera: Kerriidae) merupakan serangga yang hidup secara parasitik pada tanaman inangnya. Serangga tersebut menghasilkan resin alami yang kompak dan tebal, yang menempel pada cabang tanaman tempat hidupnya yang biasa disebut lak. Lak cabang merupakan resin alami dari hasil sekresi serangga L. lacca berupa lapisan tebal lak yang membungkus ranting-ranting tanaman inang. Serangan parasitoid dan predator terhadap kutu lak berdampak langsung pada penurunan produktivitas lak. Penelitian ini bertujuan untuk mengidentifikasi parasitoid dan predator yang menyerang kutu lak, dan menghitung tingkat parasitisasi di BKPH Kabuaran dan Taman, KPH Probolinggo, Perum Perhutani Unit II Jawa Timur. Sampel lak cabang diambil dari BKPH Kabuaran dan Taman masing-masing sebanyak 200 sampel lak cabang. Masing-masing lak cabang dimasukkan ke dalam tabung reaksi. Pengamatan parasitoid yang keluar dari lak cabang dilakukan dalam tabung reaksi. Famili parasitoid yang dominan ditemukan, yaitu Aphelinidae, Encyrtidae, dan Eulophidae. Predator yang ditemukan pada kutu lak terdiri atas Famili Lathridiidae (Coleoptera), Cosmopterigidae, dan Noctuidae (Lepidoptera), Nabidae (Hemiptera), serta Chrysopidae (Neuroptera). Jumlah kumulatif parasitoid di lapangan lebih banyak (5.900 individu) dibandingkan dengan di gudang (5.263 individu). Pertambahan individu parasitoid tertinggi dari lapangan dan gudang terjadi pada pengamatan hari ke-7 sampai hari ke-17. Tingkat parasitisasi kutu lak di lapangan dan gudang tergolong tinggi dengan nilai rata-rata sebesar 93% dan 96%. Dapat disimpulkan bahwa kutu lak yang berasal dari lapangan maupun gudang mengalami serangan parasitoid yang sangat tinggi.

Abstract. Suheri M, Haneda NF, Anwar R, Jung Y, Sukeno S, Park J. 2022. Population dynamics of Zeuzera spp. (Lepidoptera: Cossidae) on Eucalyptus pellita plantation in Central Kalimantan, Indonesia. Biodiversitas 23: 5782-5789. The red coffee borer, Zeuzera spp. (Lepidoptera: Cossidae) damage to Eucalyptus pellita forests was one of the problems in the forestry sector. The population dynamic of these insects is monitored and surveyed on E. pellita at PT Korintiga Hutani. The present study aimed to analyze the contributing factors of Zeuzera spp. damage to E. pellita plantation and observe the population dynamics of Zeuzera spp. using pheromone traps. The survey results showed that the accumulated damage in planting block 5 was more serious (29%) than in planting block 6 (9%). The impact of the multi-regression analysis indicates that the main factors affecting the damage are the location and age of the plantation. At the same time, the E. pellita clonal difference is minor compared to those two factors. The damage is more severe and occurs at an older age of plantations. The population dynamics of Zeuzera spp. observed in E. pellita plantation showed a peak flight trend in October, followed by a reasonably high population presence from late May to early June. This information could be a primary consideration for these insect pest need to control the significant damage to E. pellita trees and determine the management of Zeuzera spp. based on the timing of larvae infestation in the upcoming after-peak flight.