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''Pycnarmon marginalis'' is a
moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of ...
in the family
Crambidae The Crambidae are the grass moth family of lepidopterans. They are variable in appearance, the nominal subfamily Crambinae (grass moths) taking up closely folded postures on grass stems where they are inconspicuous, while other subfamilies includ ...
. It was described by
Samuel Constantinus Snellen van Vollenhoven Samuel Constant Snellen van Vollenhoven (18 October 1816, Rotterdam – 22 March 1880) was a Dutch entomologist. He is not to be confused with Pieter Cornelius Tobias Snellen another entomologist from Rotterdam. He was curator of the entomologic ...
in 1890. It is found in
Sikkim Sikkim (; ) is a state in Northeastern India. It borders the Tibet Autonomous Region of China in the north and northeast, Bhutan in the east, Province No. 1 of Nepal in the west and West Bengal in the south. Sikkim is also close to the Siligu ...
, India and
Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northe ...
. The
wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the other wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingspan ...
is about 20 mm. Adults are glossy white, the forewings with black spots at the base of the costa and vein 1 and with subbasal and antemedial larger spots on the costa, as well as a discocellular spot. The postmedial line is strongly marked and outwardly oblique from the costa to vein 2, then obsolescent and retracted to below the angle of the cell. The hindwings have a discocellular spot and the postmedial line is nearly straight from costa to vein 2, then retracted to below the angle of the cell. Both wings have a very prominent broad black marginal line.


References

Spilomelinae Moths described in 1890 Moths of Asia Moths of Taiwan Taxa named by Samuel Constantinus Snellen van Vollenhoven {{Spilomelinae-stub