Lang's Short-Tailed Blue

Fascinating facts about the Lang's Short-Tailed Blue

• The Lang's short-tailed blue is a very small butterfly, with males measuring 21-29 mm across the wings and females a little larger at 24-30 mm. Its compact wings give it a delicate appearance that can easily be mistaken for other tiny blues. The upperside colours differ between the sexes, while the underside's pale beige and white striping adds to the confusion. Because of its size and wing pattern it is often confused with Lampides boeticus.
• Each hindwing carries two minute tails that are framed by striking orange and black marginal spots. These tiny extensions are most visible when the butterfly settles on foliage, giving a subtle but distinctive silhouette. The colour contrast of the spots helps observers identify the species even at a distance. Resting habits on thyme clusters further highlight the tail and spot pattern.
• The underside of the Lang's short-tailed blue is a dark beige background crossed by fine white lines, a pattern that closely resembles that of Lampides boeticus and Cacyreus marshalli. This similarity forces lepidopterists to examine the wing markings closely to avoid misidentification. The intricate line work and subtle colour tones are characteristic of the species when the wings are closed. Accurate spotting often requires a careful side-by-side comparison.
• The Lang's short-tailed blue does not stay confined to its Mediterranean heartland; in some years it drifts far north. Observers have recorded solitary individuals in places such as Bale, Stuttgart, Augsburg and Bozen, far beyond the usual range. These rare appearances are linked to its occasional migratory behaviour noted in early spring and late summer. The butterflies are usually seen singly and are not plentiful when they arrive.
• A complete generation of Lang's short-tailed blue develops in just four to eight weeks, the exact speed shifting with ambient temperature. After hatching, the caterpillars feed on the flowers and fruits of a broad suite of plants, including species from the Fabaceae, Rosaceae and Plumbaginaceae families such as Medicago, Trifolium, Indigofera and Plumbago. This diverse diet allows the larvae to thrive in varied habitats from cultivated gardens to natural scrub.

Sources

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• Wikipedia

At a glance

About the Lang's Short-Tailed Blue

As the warm sunlight dances across the open meadows, the Lang's Short-Tailed Blue butterfly flutters into view, its iridescent wings beating at a hypnotic pace as it flits from flower to flower in search of sweet nectar. With a delicate, almost ethereal quality to its flight, this diminutive creature weaves a mesmerizing path through the tall grasses, its short tail a distinguishing feature that sets it apart from its more extravagantly plumed cousins. As it alights upon a vibrant bloom, its wings fold delicately, revealing a soft, powdery sheen that seems almost otherworldly in its beauty.

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