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Monarch butterflies flying and sipping nectar from milkweed flowers. The adult's wingspan ranges from 8.9 to 10.2 centimetres (3.5 to 4.0 in). [10] The upper sides of the wings are tawny orange, the veins and margins are black, and two series of small white spots occur in the margins. Monarch forewings also have a few orange spots near their tips.
Although monarch caterpillars will feed on butterfly weed (A. tuberosa) in butterfly gardens, it is typically not a heavily used host plant for the species. [51] The plant contains only low levels of cardiac glycosides. This may make A. tuberosa unattractive to egg-laying monarchs. [52] Some other milkweeds have similar characteristics. [53]
Monarch butterfly migration is the phenomenon, mainly across North America, ... Female monarchs lay eggs for a subsequent generation during the northward migration. [2]
Monarch populations in the West face an even greater chance of extinction at 99% by the year 2080. The Fish and Wildlife Service is accepting public comments on its proposal until March 12, 2025.
In an effort to mitigate the destruction of the monarch butterflies natural habitat, Monarch Watch has called for volunteers to plant milkweed wherever possible. Milkweed is essential to the life-cycle of the monarch butterfly as they lay their eggs on the underside of the plant's leaves. [ 8 ]
Plants that are mowed or cut back in June – August regrow rapidly from their roots in time for peak monarch egg-laying, when reproducing female monarchs have a preference for quickly-growing A. syriaca shoots whose foliage is tender and soft. [25] A. syriaca can be grown from seeds and propagative root cuttings. [2]
Ophryocystis elektroscirrha is most often transmitted from females to their offspring, when spores stick to the female's body and get scattered on her eggs and the surface of milkweed leaves, the host plants of monarch and queen caterpillars.
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