Diversity of butterflies in the tropical wetland of Kayan-Sembakung Delta, North Kalimantan, Indonesia

Abstract. Harmonis, Rahim A, Hidayat HA, Saud OR, Wilujeng M, Sampe R, Kartika KF, Aminudin, Butar TB. 2022. Diversity of butterflies in the tropical wetland Kayan-Sembakung Delta, North Kalimantan, Indonesia. Biodiversitas 23: 3303-3312. Butterflies, which belong to order Lepidoptera, are considered superior biological indicators evaluate environmental conditions various types habitats due their high richness biodiversity, short generation time, good movement, and sensitivity. Since produce benefits for ecosystem, conservation currently receives significant attention improve human well-being. However, there is still limited research about butterfly diversity wetlands, especially Borneo (Kalimantan) Island. Herein, we identify found unexplored so far. The area was dominated by mangroves, peat swamps, brackish swamps. locations inside Delta were divided into 20 groups. specimen collected an aerial insect net bait traps. index, taxonomy structure, domination index further investigated. results showed that highest individuals (69) species (36) had been Pembeliangan. Altogether, 608 92 areas studied. Among others, family Nymphalidae noted as most dominant. We stated also influenced type habitat, it could be at swamp forest where found. In meantime, some unique have including Arhopala overdijkinki, Hypolycaena thecloides, Drupadia johorensis, Idea leuconoe, Polyura jalysus. this study expected give more information future management areas, Delta.