Galapagos Species Database

The Galapagos Species Database shares the information about the species from our Natural History Collections.

Home Research Hub dataZone Galapagos Species Database

Hemiargus ramon (Dognin, 1887)

FW = 8.2-11.6 mm. Resembles L. parrhasioides but H. ramon has two black dots in the VHW inner costal margin while L. parrhasioides has none. Male: DW and DHW violet blue, the outer margins thinly bordered with white. Female: DW and DHW dark with only a touch of blue at the wing base (Roque 2010).

Taxonomy

Domain
Eukaryota

Kingdom
Animalia

Phylum
Arthropoda

Class
Insecta

Order
Lepidoptera

Superfamily
Papilionoidea

Family
Lycaenidae

Genus
Hemiargus

Species
ramon

Taxon category: Accepted

Origin: Introduced - established

Introduction

Year of first record: 1995

Mode of introduction: Accidental

Introduction Pathway: Contaminant

Subpathway: Contaminant on plants (inc. seeds and plant associated material)

Introduced status: Naturalized

Invasive status: No data

Distribution

Map of specimen collection localities or observation records for this species in our collections database.

Distribution: Baltra, Española, Fernandina, Floreana, Isabela, Pinzón, Rábida, San Cristóbal, Santa Cruz, Santa Fe, Santiago, Seymour Norte (Roque, 2004) (Roque, 2006) (Peck et al., 1998)

References

  • Causton, C.E. Peck, S. B., Sinclair, B. J., Roque-Albelo, L., Hodgson, C. J. & B. Landry. (2006) Alien insects: threats and implications for the conservation of the Galapagos Islands. Annals of the Entomological Society of America, 99(1), 121-143.
  • Peck, S.B. Heraty, J., Landry, B. & Sinclair, B.J. (1998) Introduced insect fauna of an oceanic archipelago: The Galápagos Islands, Ecuador. Am. Entomol. 44: 218-237.
  • Roque-Albelo, L. (2004) The butterflies (Papilionoidea, Hesperioidea) of the Galapagos islands, ecuador: distribution, hostplants and biology. Journal of the Lepidopterist Society
  • Roque-Albelo, L. (2006) Diversity and ecology of the Lepidoptera in the Galápagos Islands, Ecuador Cardiff University (United Kingdom)
  • Roque-Albelo, L. Cruz Bedón, V. & Lamas, G. (2007) Hemiargus ramon (Dognin, 1887) (Lycaenidae: Polyommatinae) A new resident butterfly of the Galápagos Islands. Noticias de Galápagos 224: 1.
  • Roque-Albelo, L. Landry, B. (2016) CDF Checklist of Galapagos Butterflies and Moths Charles Darwin Research Station, Puerto Ayora, Ecuador, 32 pp.
  • Williams, F.X. (1911) Expedition of the California Acadmey of Sciences to the Galapagos Islands 1905-1906. - 3. The butterflies and hawk-moths of the Galapagos Islands. Proceedings of the California Acadmey of Sciences, Fourth Series 1: 289-322.

You are welcome to download and use the information found in this page, acknowledging its source.

This page should be cited as follows:

"Galapagos Species Database, Hemiargus ramon", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=7222. Accessed 4 June 2026.