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Old World Swallowtail

Old World Swallowtail, Papilio machaon

Old World swallowtail butterfly (Papilio machaon), ????) in Hatonomori Park, Moriyama City

Old World Swallowtail, Papilio machaon
Source: https://tinyurl.com/ms8kj6c4 Photo: Greg Peterson CCL: https://tinyurl.com/2s4apsss

Old World Swallowtail Facts

Source: https://tinyurl.com/w7jnx6rw Photo: Charles J. Sharp CCL: https://tinyurl.com/bdes27an

Old World Swallowtail Physical Description

The truly breathtaking Old World Swallowtail typically captivates those who encounter the marvel. Pure physical size isn’t generally one of those, though. That’s because, regardless of its eye-catching appeal, it’s a roughly average-sized member of its scientific Order.

It distingishes itself in this regard in one manner, however. That’s true given that fact that, unlike most of its kindred, it displays no noticeable degree of the physiological characteristic of sexual dimorphism. This makes identifying the genders difficult for many observers.

The body of the caterpillar stage of both sexes attains an average length of approximately 1.8 in (4.6 cm). That of the mature adult retains roughly the same measurement. Though mostly showing black above, with yellow trim, the underside mainly presents as yellow.

It’s the wings of the visually stunning Old World Swallowtail that generally garner the most attention, however. These often vary significantly in wingspan, regardless of gender. On average, this equals between 2.6 – 3.4 in (6.5 – 8.6 cm). Few exceed this by much.

On the upperside of both hindwings, a distinctive feature appears. That’s the existence of a relatively large eyespot located near the tail of the invertebrate. This itself shows a reddish-orange shade, with the presence of a black border near the edge of the hindwing.

Further enhancing this is the presence of 6 small, blue eye-spots on the same wing. Yet nature isn’t done with this wonder yet. These same hindwings also possess a pair of sharply protruding tail-like structures. These provide a resemblance to the bird of the same name.

Source: https://tinyurl.com/55zurc7f Photo: Greg Peterson CCL: https://tinyurl.com/33psz7af

Old World Swallowtail Distribution, Habitat, and Ecology

The intensely beautiful Old World Swallowtail apparently evolved as native to an extremely wide expanse of the surface of the earth. The nature of that zone of habitation, though, probably won’t surprise many people. It’s intimated by the very name of the Arthropod.

The insect developed as partly endemic to what’s known as the Old World region of the globe. Yet it also evolved as native to an even greater range. That includes the entirety of both Europe and Asia, and extends to portions of the northern sections of Africa.

The intrepid animal also demonstrates a decidedly flexible approach to its preferences for its choice of habitat. It therefore inhabits a moderately broad range of ecosystems. These typically consist of such regions as areas of meadows, hilltops, and even tundra.

It further displays an adaptability to a wide range of altitudes across its native range. In some regions, the invertebrate lives near sea level. In other sections, though, like the Kashmir Valley, individuals sometimes appear at heights of up to as great as 16,000 ft (4,877 m).

Like its relatives, the Old World Swallowtail developed as herbivorous in nature. Adults of this particular species primarily feed on the flower nectar of plants from a single Family. In its case, this consists of members of what’s commonly known as the celery Family.

After mating, females lay eggs individually, usually on the underside of a food plant. The caterpillar form feeds on a wider variety of sources than the adults. The males of the beautiful butterfly frequently congregates in numbers to compete for approaching females.

Species Sharing Its Range

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