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Berta
albiplaga Warren
Berta albiplaga Warren, 1893, Proc. zool. Soc. Lond., 1893:
357.
?Berta discolor Warren, 1894, Novit zool., 1: 389.
Berta olivescens Warren, 1896, Novit zool., 3: 287, syn.
n.
Diagnosis. The postmedials and antemedials are well separated on both wings,
with a broad, relatively immaculate green area between them on the forewing. The
fasciae are continuous though irregular in course, rather than broken.
Taxonomic notes. The taxon olivescens is best placed as an eastern subspecies
of albiplaga, being a brighter green with similar but reduced white
fasciation. The male genitalia have a similarly complex juxta and serrate lobe
to the sacculus, but the apex of the latter is more rounded. The bilobed margin
of the eighth sternite is also similar.
Geographical range. N.E. Himalaya, Borneo, Sumatra, Java, Bali; New Guinea, S. Moluccas.
Habitat preference. Two out of three Bornean specimens seen are from lowland localities
in dipterocarp forest and dry heath forest. The third specimen is from 600m on
Mt. Trus Madi.
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