Tailless Lineblue

Prosotas dubiosa · Order: Lepidoptera · Family: Lycaenidae

Also called: Purple Line-blue, Small Purple Line Blue

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Tailless Lineblue
Photo: Mitul and Vijul Singh, CC BY

It is a small blue butterfly found from Sri Lanka and India through the Himalayas to northern and eastern Australia. Unlike most Prosotas species, it lacks the hair-like tail filaments on its hindwings.

Source: Wikipedia

How to recognize it

Georg Semper first described the species in 1879. It does not have the hair-like tail filaments that many other Prosotas butterflies have.

Source: Wikipedia

Where it lives

In Australia it occurs from the north down to New South Wales near Coffs Harbour.

Source: Wikipedia

Where it comes from

The tailless lineblue is a blue Lycaenid butterfly native to Asia and Australia.

Source: Wikipedia

Lookalikes

It can be told apart from other Prosotas species by the absence of tail filaments on its hindwings.

Source: Wikipedia

More photos

Tailless Lineblue photo 3
Photo: Hopeland, CC BY
Tailless Lineblue photo 4
Photo: Gerard Chartier, CC BY
Tailless Lineblue photo 5
Photo: Graham Winterflood, CC BY-SA
Tailless Lineblue photo 6
Photo: unknown, CC0

Same family (Lycaenidae)

Common BlueCommon BluePolyommatus icarusGray HairstreakGray HairstreakStrymon melinusSmall CopperSmall CopperLycaena phlaeasEastern Tailed-BlueEastern Tailed-BlueEveres comyntasHolly BlueHolly BlueCelastrina argiolusLesser Grass BlueLesser Grass BlueZizina otis

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Prosotas_dubiosa

Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia

Text written 2026-10-22 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.

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