Abstract:
Species abundance and diversity of predatory arthropods are important information for developing biological pest control strategies. A study that aims to determine the abundance of predators (Coccinellidae and Araneae) in peatlands planted with shallots in Tegal Arum Village, Landasan Ulin District, Banjarbaru City, South Borneo has been carried out. The method used is purposive sampling method. Selecting plots with uniform growth and plant height of shallots in one plot or beds measuring 3 x 20 m and six plots were observed using three methods: direct sampling, swing nets, and pitfall traps. Observations on species abundance of spiders and predatory coccinellids were carried out to describe the number of species and the abundance of insects in shallot cultivation on peatlands. Predators from the order Coleoptera of the Coccinellidae family observed belong to (Menochilus sexmaculatus, Micrapsis sp, Coccinella novemnotata and Scymnus sp. with 143 individuals and the highest population was found by Micrapsis sp (128 individuals). Meanwhile, there were 6 species of spiders (Araneae) from 5 different families (Oxyopidae, Tetragnatidae, Lyniphiidae, Thomisidae, and Lycosidae) with the most individuals being Oxyopes variabilis (Araneidae: Oxyopidae). The distribution index of species diversity (E) shows E> 0.6, indicating that the evenness of species on the land is uneven
