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The common blue butterfly or European common blue [3] (Polyommatus icarus) is a butterfly in the family Lycaenidae and subfamily Polyommatinae. The butterfly is found throughout the Palearctic and has been introduced to North America. Butterflies in the Polyommatinae are collectively called blues, from the coloring of the wings.
The term comes from the Greek γυνή (gynē) 'female', ἀνήρ (anēr) 'male', and μορφή (morphē) 'form', and is used mainly in the field of entomology. Gynandromorphism is most frequently recognized in organisms that have strong sexual dimorphism such as certain butterflies, spiders, and birds, but has been recognized in numerous ...
It is a small butterfly with both generation dimorphism and sexual dimorphism. For the first generation the upperside is blue with grey hind-wings and in the female a sub-marginal line of orange spots. The summer generation of the female is brown with the same sub-marginal line of orange spots while they are absent in the lighter male.
Right away you can tell this isn't your typical butterfly, but those mismatched wings are more than just a difference in pattern. The wing on the left is typical of a male Lexias pardalis ...
The holly blue is subject to marked population cycles which appear to be caused by interactions with the parasitoid ichneumon wasp Listrodromus nycthemerus. The wasp lays an egg on a holly blue caterpillar, inserting the egg into the caterpillar's body and the adult wasp emerges from the chrysalis, killing the chrysalis before its emergence.
The list comprises butterfly species listed in The Moths and Butterflies of Great Britain and Ireland by Emmet et al. [1] and Britain's Butterflies by Tomlinson and Still. [2] A study by NERC in 2004 found there has been a species decline of 71% of butterfly species between 1983 and 2003. [3]
Lycaenidae is the second-largest family of butterflies (behind Nymphalidae, brush-footed butterflies), with over 6,000 species worldwide, [1] whose members are also called gossamer-winged butterflies. They constitute about 30% of the known butterfly species.
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related to: common blue female butterfly uk pictures and characteristics girls