Journal
RECORDS OF THE AUSTRALIAN MUSEUM
Volume 75, Issue 2, Pages 65-78Publisher
AUSTRALIAN MUSEUM
DOI: 10.3853/j.2201-4349.75.2023.1826
Keywords
Butterfly biodiversity; Lauraceae; Litsea leefeana; life history
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A new subspecies, Philiris diana fortuna ssp. nov., has been discovered in the Atherton Tableland, showing substantial phenotypic differences from the nominotypical subspecies Philiris diana diana Waterhouse & Lyell, 1914.
Philiris diana Waterhouse & Lyell, 1914 from the Wet Tropics of northeastern Queensland was previously thought to be monotypic, being most closely related to Philiris papuanus Wind & Clench, 1947 from Cape York Peninsula, Australia, and mainland New Guinea. However, a new subspecies was recently discovered on the Atherton Tableland, which we illustrate, diagnose and describe as Philiris diana fortuna ssp. nov. It appears to be a narrow-range endemic, restricted to montane forest (750-1,090 m asl) and allopatric or parapatric from the nominotypical subspecies Philiris diana diana Waterhouse & Lyell, 1914, which is largely restricted to low to mid-altitude forests in the coastal escarpment in the Cairns-Kuranda district. Despite being separated by a minimum distance of only 20-25 km, the two taxa show substantial phenotypic differences in wing pattern elements, but negligeable differences according to the mitochondrial COI barcode region (mean p-distance = 0.28%). The habitat and biology of the new taxon are summarized, and likely historical processes driving divergence between upland and lowland populations of this species hypothesized.
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