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In addition to this, the bush brown is one of many insect species to vary its coloration depending on the season, [5] making it a valuable tool in studying phenotypic plasticity. Wet seasons produce butterflies with large eyespots, while dry seasons have butterflies dull in color. [6]
Orsotriaena medus is a medium-sized butterfly with wingspan of 45 to 55 mm (1.8 to 2.2 in). The butterfly is dark brown above with a thin marginal pale border. The upper hindwing having a thin submarginal line. There are no eyespots on the upperside of the wings. [9] Below, the butterfly has a white discal band which runs across both wings.
Functional experiments using transgenic Bicyclus anynana (the squinting bush brown butterfly) have shown that overexpression or down-regulation of Dll in the first expression domain correlates with bigger and smaller eyespots respectively. However, if this is done on the second domain then the overall size of the eyespots remains the same, but ...
The meadow brown (Maniola jurtina) is a butterfly found in the Palearctic realm. Its range includes Europe south of 62°N , Russia eastwards to the Urals , Asia Minor , Iraq , Iran , North Africa and the Canary Islands .
Lethe diana, the Diana treebrown, is a brush-footed butterfly (subfamily Satyrinae) in the family Nymphalidae.Its wings are a dark shade of brown, with an eyespot pattern, and a wingspan of about 45–55 mm. [1] It resembles Lethe confusa; however, the Lethe confusa bears a white band on its wings, setting them apart.
Junonia grisea, also known as the gray buckeye, grey buckeye, or Western buckeye, is a species in the butterfly family Nymphalidae. It is found in North America, west of the Rocky Mountains. Like the common buckeye, the gray buckeye is a brown butterfly with eyespots on its wings that distract predators from its body. [1]
Brown Butterflies. While many brown butterflies can be confused with moths, there are a number of darkly colored insects out there, including Satyrs, Coppers, and Skippers.
Both subspecies are small brown butterflies with a wingspan rage of 34–44 mm. [9] [10] The upper surfaces of their wings are unmarked, while the undersides of the wings have rows of round, yellow-ringed eyespots. [11] N. m. francisci is slightly darker, with more irregularly shaped eyespots. [11]