Carposina viduana
Carposina viduana is a moth in the Carposinidae family. It was described by Aristide Caradja in 1916. It is found in Russia (Khabarovskii krai, Primorskii krai).
Carposina viduana | |
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Species: | C. viduana |
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Carposina viduana Caradja, 1916 | |
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The wingspan is 15–19 mm. The basal part, costal margin and distal third of the forewings are almost black. The pattern consists of five small concolorous costal spots and a large white trapezoidal spot and a black dot on the anal fold.
Taxonomy
This species was considered a form of Carposina sasakii by Alexey Diakonoff in 1989, but reinstated as a species in 2009.[1]
gollark: Although I don't know why you can't long-divide it, p and q are just constants for the purposes of that.
gollark: That lets you work out a/b/c/d, which you can substitute back into (x-1)(ax^3+bx^2+cx+d).
gollark: So:2 = a (x^4 terms)p = b - a (x^3 terms)-6 = c - b (x^2 terms)q = d - c (x terms)6 = -d (constant terms)
gollark: So you can do `2x^4+ px^3 - 6x^2 + qx + 6 = ax^4 + (b-a)x^3 + (c-b)x^2 + (d-c)x - d`, and you know the coefficients on x^4 and so on should be equal.
gollark: Which you can then simplify to ax^4 + (b-a)x^3 + (c-b)x^2 + (d-c)x - d.
References
- Review of the family Carposinidae from Russian Far East Archived 2013-10-20 at the Wayback Machine
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