ButterfliesAcraea andromacha Caper White Butterfly Chequered Swallowtail Butterfly Common Eggfly Butterfly Meadow Argus Orchard Swallowtail Butterfly Two-spotted Line Blue (Nacaduba biocellata) Yellow Palm Dart

Two-spotted Line Blue (Nacaduba biocellata), also spelt as the Two-spotted Line-blue Butterfly) and known as the Double-spotted Line Blue, is found across mainland Australia and Tasmania.

Two-spotted Line-blue Butterfly (Nacaduba biocellata), Belair SA © Marianne Broug
Two-spotted Line-blue Butterfly (Nacaduba biocellata), Belair SA © Marianne Broug

Both the male and female wingspan is about 20 mm. The adult females have a brown upperside, whilst the males are blue with narrow black margins. The underside of the wings for both sexes is pale brown with light and dark wavy lines. At the base of the hind wing, there are two small black dots.

Two-spotted Line-blue Butterfly (Nacaduba biocellata) mating, Alice Springs NT
Two-spotted Line-blue Butterfly (Nacaduba biocellata) mating, Alice Springs NT
Two-spotted Line-blue Butterfly (Nacaduba biocellata), Belair SA © Marianne Broug
Two-spotted Line-blue Butterfly (Nacaduba biocellata), Belair SA © Marianne Broug
Two-spotted Line-blue Butterfly (Nacaduba biocellata), Belair SA © Marianne Broug
Two-spotted Line-blue Butterfly (Nacaduba biocellata), Belair SA © Marianne Broug
Two-spotted Line-blue Butterfly (Nacaduba biocellata), Innamincka SA © Tony Eales
Two-spotted Line-blue Butterfly (Nacaduba biocellata), Innamincka SA © Tony Eales
Two-spotted Line-blue Butterfly (Nacaduba biocellata), Corfield QLD © Tony Eales
Two-spotted Line-blue Butterfly (Nacaduba biocellata), Corfield QLD © Tony Eales

  • Scientific classification
  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Subphylum: Hexapoda
  • Class: Insecta
  • Informal: Pterygotes
  • Order: Lepidoptera
  • Unranked: Ditrysia
  • Superfamily: Papilionoidea
  • Family: Lycaenidae
  • Subfamily: Polyommatinae
  • Tribe: Polyommatini
  • Genus: Nacaduba
  • Species: Nacaduba biocellata
Two-spotted Line-blue Butterfly (Nacaduba biocellata), Belair SA © Marianne Broug
Two-spotted Line-blue Butterfly (Nacaduba biocellata), Belair SA © Marianne Broug

Footnote & References

  1. Nacaduba biocellata (C. & R. Felder, 1865), Two-Spotted Line-Blue, Atlas of Living Australia, https://bie.ala.org.au/species/https://biodiversity.org.au/afd/taxa/9ac99027-d2f3-4d56-90c6-8c7bc47405f2#overview
  2. Two-spotted Line-Blue (Nacaduba biocellata), iNaturalistAU, https://inaturalist.ala.org.au/taxa/353667-Nacaduba-biocellata

ButterfliesAcraea andromacha Caper White Butterfly Chequered Swallowtail Butterfly Common Eggfly Butterfly Meadow Argus Orchard Swallowtail Butterfly Two-spotted Line Blue (Nacaduba biocellata) Yellow Palm Dart

InsectsBees Beetles Blattodea Butterflies Coleoptera Cicada Crabronidae Diptera Dragonflies & Damselflies Formicidae Hemiptera Heteroptera (True Bugs) Mango Planthopper Moths Orthoptera Orthopteroid Processionary Caterpillar Stink Bugs, Shield Bugs and Allies Syrphidae Wasps Water Scorpion (Laccotrephes tristis) Witchetty Grub