This is the second part of the series I have undertaken as a Scientific Associate of the Natural History Museum, with access to collections, libraries and with working space and facilities provided in the Department of Entomology. I am grateful also for continued use of a microscope and computer equipment on loan from the International Institute of Entomology (now part of CABI Bioscience).

I have enjoyed the support of a part-time research assistant, Nria Lpez Mercader, generously funded by The Friends of the Natural History Museum. My thanks are due to them and to Nria, who has undertaken a considerable amount of literature research, translation and dissection. Text checking and help with preparation of the figures has been provided by her successor, Maia Vaswani. Much support in seeing the series through to publication in Malaysia continues to be provided by Henry Barlow, who also markets the reprint edition and underwrites the cost of the colour plates. The colour plates were photographed by Bernard D'Abrera. I am very grateful to my wife, Phillipa, for the long hours she put in at the keyboard to produce camera-ready copy for the text and figure legends. 

The work would have been impossible without the full access, mentioned above, to the collections and other facilities in The Natural History Museum, London. Material was also examined in, or from, the Australian National Insect Collection, Canberra, the Senckenberg Museum, Frankfurt, the Zoologische Staatssammlung, Munich (ZSM), the B.P. Bishop Museum, Honolulu, the University Museum, Oxford, the Forest Research Centre collection, Sepilok and the FRIM collection, Kepong. I am grateful to the staff of all these institutions for their assistance, and Chey Vun Khen and Jurie Intachat of the last two for access to unpublished host records. Such records were also gleaned from data taken from material submitted to IIE over the years for identification (See Systematic Account).

Ulf Buchsbaum kindly dissected drepanids from the Heterocera Sumatrana material in ZSM, likewise Marianne Horak for an epiplemine type species, and Shen-Horn Yen generously provided access to unpublished work by himself and Y.-J. Chen on the Epipleminae of Taiwan. Similar generous access to data on the biology of the palm-feeding drepanids of Peninsular Malaysia was given by Helmut Steiner.

Thanks are also due to the following for their critical comments on all or part of the text: Ulf Buchsbaum, Ted Edwards, Marianne Horak, Lutz Kobes, David Lees, Jol Minet, Malcolm Scoble, Chris Wilkinson and Shen-Horn Yen. Frequent discussions with Tony Galsworthy, studying the macrolepidoptera of Hong Kong in parallel, led to resolution of several knotty problems of identification and to enhancement of our knowledge of various taxa to the benefit of both our research programmes. The work also benefited from interactions at various times with Ulf Buchsbaum, David Carter, Chey Vun Khen and Jurie Intachat.

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