Lang's short-tailed Blue

Leptotes pirithous (Linnaeus, 1767)


Corfu Status: Present EU Red Data Status 2010: Least Concern


A small butterfly with underside light brown with variable pale transverse stripes, and a tail on the hindwing, with two blue spots. The males upperside are blue with a black border, whilst the female is grey brown with a blue suffusion. The underside are distinctive, with possible confusion with Lampides boeticus, which has a browner underside and slightly larger. 

Habitat Requirements

Most commonly encountered in gardens and scrubby sites.

Larval Foodplants

Sambucus ebulus, Broom Cytisus scoparius - not on Corfu, Lucerne Medicago sativa, Yellow Sweet Clover Melilotus officinalis, Purple-loosestrife Lythrum salicaria. Anne Sordinas has found ovae and reared larvae on Plumbago spp. possibly auriculata.


Best observed later in the year when it is particularily easy to photograph on the blooms of Aromatic Inula Dittrichia vicosa.

Flight Times

Key to Seasons
Spring (Mar, Apr, May) Summer (Jun, Jul, Aug)
Autumn (Sep, Oct, Nov) Winter (Dec, Jan, Feb)

First and Last Sightings

The information provided here is based on verified sightings submitted via this website since January 1st 2021. Data prior to 2021 is from external sources.

Year First Last/latest
2021 10/05/2021 01/12/2021
2019* 19/04/2019 23/11/2019

Years marked * based on external data.

Number of Observations

Number of sighting in 2021 Total number of sightings
299 304


  • Vernacular/Common Name: Lang's short-tailed Blue
  • Family: Lycaenidae (Leach, 1815)
  • Sub-family: Polyommatinae (Swainson 1831)
  • Tribe: Polyommatini (Swainson 1831)
  • Sub-tribe: Leptotina ()
  • Genus: Leptotes (Scudder, 1876)
  • Species: pirithous (Linnaeus, 1767)


For a list of references, please see our bibliography page.