Diversity and abundance of longhorn beetles (Coleoptera: Cerambycidae) in Gunung Walat Educational Forest, West Java, Indonesia

Abstract

Gunung Walat Educational Forest is located at an altitude of 500-700 m asl and has a variety of forest types. This research investigated the diversity and abundance of longhorn beetles found in several types of plantation forest. The beetles were collected using Artocarpus traps in September and October 2014. Sixteen species of longhorn beetle were found; these belonged to 7 tribes and 12 genera. The highest diversity and evenness of longhorn beetles were found in the natural forest (H=1.80, E=0.75) and the lowest of both measures in the Agathis forest (H=0.556, E=0.232). The highest similarity index (0.75) was found between the natural forest and the pine forest. Five of the species found, i.e. Sybra binotata, Sybra fuscotriangularis, Ropica strandi, Acalolepta rusticatrix, and Pterolophia melanura were highly abundant. Two of these, R. strandi and S. fuscotriangularis, as well as 4 other species found, Cleptometopus montanus, Myagrus javanicus, Notomulciber notatus, and Exocentrus artocarpi, are only found in Java. Finding Ropica marmorata was the first such record of this species on the island of Java.