Operophtera
Operophtera is a genus of moths in the family Geometridae erected by Jacob Hübner in 1825.
| Operophtera | |
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| Operophtera brumata | |
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| Genus: | Operophtera Hübner, 1825 |
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Selected species
- Operophtera bruceata (Hulst, 1886) – bruce spanworm (also native winter moth in North America)
- Operophtera brumata (Linnaeus, 1758) – winter moth
- Operophtera danbyi (Hulst, 1896)
- Operophtera fagata (Scharfenberg, 1805) – northern winter moth
gollark: ++magic py import randombot.remove_command("deploy")@bot.command(rest_is_raw=True)async def bee(ctx, *, target): if random.randint(0, 7) == 3: await ctx.send("No. Protocol φ-73 initialized.") else: await ctx.send("🐝sed " + target.strip())
gollark: ++invite
gollark: ++remind 7mo initiate contingency for Ω-class event (again)
gollark: MUAHAHAHAHA.
gollark: ?tag create dft The DFT is the most important discrete transform, used to perform Fourier analysis in many practical applications.[1] In digital signal processing, the function is any quantity or signal that varies over time, such as the pressure of a sound wave, a radio signal, or daily temperature readings, sampled over a finite time interval (often defined by a window function[2]). In image processing, the samples can be the values of pixels along a row or column of a raster image. The DFT is also used to efficiently solve partial differential equations, and to perform other operations such as convolutions or multiplying large integers.
References
- Pitkin, Brian & Jenkins, Paul. "Search results Family: Geometridae". Butterflies and Moths of the World. Natural History Museum, London.
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