This is the second of three volumes covering moth species historically treated as 'Pyralidae,' but now divided between the superfamily Thyridoidea and the families Pyralidae and Crambidae in the superfamily Pyraloidea. This volume encompasses all subfamilies in the Crambidae (Acentropinae, Crambinae, Cybalomiinae, Glaphyriinae, Hoploscopinae, Lathrotelinae, Musotiminae, Odontiinae, Pyraustinae, Schoenobiinae, Scopariinae and Spilomelinae), except for the latter half of the Spilomelinae genera, starting with Glycythyma, which will be covered in Volume 3. The expected publication date for Volume 3 is 2025.
In this volume, the authors document 452 named species and 386 unnamed morphotypes, encompassing all subfamilies of the Crambidae, except for the latter half of the Spilomelinae as mentioned above. These volumes do not serve as formal monographs describing species and revising genera. instead, they act as preliminary guides to the pyraloid fauna of Borneo, with the aim of encouraging the taxonomic community to formal descriptions and revisions. A significant proportion of the species are economically important pests of rice, fruit, and stored products.
This is an illustrated guide, not a taxonomic monograph. Identification is on the basis of external features only. Many images of morphotypes at or near the species level are included to give a starting point for those wishing to explore further the fauna of Borneo. Each plate has rows of five images across and seven rows down (35 images per plate). Plate legends give the current scientific name, the author's name and the year in which the species was described, followed by a variety of data about the taxon and specimen. There are also 6 plates of live specimens showing resting postures.