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Strymon bazochii

Smaller Lantana Butterfly


Strymon bazochii

Frotadora Enana

Family: Lycaenidae
Order: Lepidoptera
Class: Insecta
Phylum / Division: Arthropoda
Kingdom: Animalia

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Records from Argentina


Description


Characterized by its modest dimensions and cryptic ventral patterning, this small lepidopteran exhibits a wingspan ranging between 20 and 26 millimeters. The dorsal surface of the wings is predominantly a dull brownish gray, with males displaying a subtle, iridescent purplish blue wash confined near the base of the hindwings, while females present a more uniform and subdued coloration. The ventral side features a highly intricate, mottled pattern composed of gray, brown, and white markings, which provides excellent camouflage against bark and dry foliage. Near the anal angle of the hindwing, a minuscule orange-red spot is visible, sometimes accompanied by a highly reduced, vestigial tail, a diagnostic feature that distinguishes this taxon from other closely related members of its genus that possess more developed tails.

Geographical distribution This species boasts a broad distribution across the Neotropical realm and the southern margins of the Nearctic region, extending from southern Texas in the United States, southward through Mexico, Central America, and the Caribbean islands, down to South America, where it is found in Brazil, Paraguay, and northern Argentina. Additionally, due to its potential as a biocontrol agent against invasive weeds, the insect was intentionally introduced to the Hawaiian Islands in the early 20th century, where it has established stable, self-sustaining populations across the archipelago.

Habitat: It primarily frequents disturbed open spaces, dry scrublands, forest edges, pastures, vacant lots, and suburban gardens. The presence of this taxon is closely linked to sunny, open areas where its primary larval host plants thrive, showing an exceptional tolerance for anthropogenically modified environments and quickly colonizing rural and urban landscapes alike.

Feeding As an adult, the imago is a generalist nectar-feeder that frequently visits low-growing flowers, showing a strong affinity for the blooms of Lantana, Lippia, and various wild aster species. In contrast, the larval stage is characterized by a highly specialized phytophagous diet, in which the caterpillars feed almost exclusively on the flower buds, young flowers, and immature fruits of host plants like Lantana camara, effectively suppressing the reproductive output of these invasive botanical species.

Behavior: The insect displays a remarkably rapid and erratic flight pattern close to the ground, which serves as an effective defense mechanism against avian and insectivorous predators. Males exhibit territorial perching behavior, settling on sunlit leaves or twigs at a moderate height to monitor the surrounding area for receptive females. When at rest, adults frequently perform a rhythmic, alternating rubbing motion of their hindwings, a deceptive behavior that draws the attention of potential predators toward the non-vital hind margins of the wings and away from the vulnerable head.

Reproduction The life cycle begins when the female deposits small, discoidal, greenish eggs individually onto the flower buds of chosen host plants. Upon hatching, the slug-like, greenish-yellow caterpillars utilize their coloration to blend seamlessly with the floral structures they consume. After undergoing several larval instars, the caterpillar transitions into a pupa, forming a compact chrysalis secured to the stems of the host plant or concealed among fallen leaf litter on the forest floor using a delicate silk girdle.

Conservation status This taxon has not been formally evaluated by the IUCN Red List of Threatened Species, resulting in a Not Evaluated (NE) conservation status. Given its expansive geographic range, high adaptability to disturbed ecosystems, and the abundance of its larval host plants, the global population remains stable and secure, faces no significant threats, and does not currently require targeted conservation actions.



Compilation and publication: EcoRegistros – 22/08/2026




Geographic distribution


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Latest feeding records

Feeding on...
GroupSpeciesDateUser
PlantsLantana (Lantana camara)23/04/2022Hork Fell




Species photographs

Last published photographs

Foto
Photography ID: 697016
  Adult

Alunail@nds
La Rioja
Argentina
07/26/2026
Ramón Vera
Foto
Photography ID: 697015
  Adult

Alunail@nds
La Rioja
Argentina
07/26/2026
Ramón Vera
Foto
Photography ID: 693074
  Adult

Alunail@nds
La Rioja
Argentina
06/27/2026
Ramón Vera
Foto
Photography ID: 693073
  Adult

Alunail@nds
La Rioja
Argentina
06/27/2026
Ramón Vera
Foto
Photography ID: 680862
  Adult

Victoria
Entre Ríos
Argentina
03/24/2026
Peter Vidana
Foto
Photography ID: 680853
  Adult

Victoria
Entre Ríos
Argentina
03/24/2026
Peter Vidana
Foto
Photography ID: 680285
  Adult

Victoria
Entre Ríos
Argentina
03/24/2026
Gaston Lisandro Gabinetti
Foto
Photography ID: 680284
  Adult

Victoria
Entre Ríos
Argentina
03/24/2026
Gaston Lisandro Gabinetti
Foto
Photography ID: 679918
  Adult

San Nicolás de los Arroyos
Buenos Aires
Argentina
03/22/2026
Peter Vidana



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Species vocalizations

Last vocalizations published



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Species videos

Last filmings published


Video ID: 4654
  Adult

Funes
Santa Fe
Argentina
03/05/2021
Gaston Lisandro Gabinetti
Video ID: 735
  Adult

Funes
Santa Fe
Argentina
10/16/2014
Gaston Lisandro Gabinetti



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Species reports



 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
250457026/07/2026ArgentinaLa RiojaAlunail@nds, Alunail@ndsRamón Vera
248749927/06/2026ArgentinaLa RiojaAlunail@nds, Alunail@ndsRamón Vera
247726331/05/202612:40ArgentinaSanta Fe20 de Junio, San Jerónimo Norte1Gustavo Fernando Durán
245509424/03/2026ArgentinaEntre RíosCerro de La Matanza, VictoriaPeter Vidana
245508424/03/2026ArgentinaEntre RíosCerro de La Matanza, VictoriaPeter Vidana
245507724/03/2026ArgentinaEntre RíosReserva de Usos Múltiples Humedales e Islas de VictoriaPeter Vidana
245496224/03/2026ArgentinaEntre RíosReserva de Usos Múltiples Humedales e Islas de VictoriaGaston Lisandro Gabinetti
245403424/03/2026ArgentinaEntre RíosCerro de La Matanza, VictoriaGaston Lisandro Gabinetti
245316222/03/2026ArgentinaBuenos AiresEco Parque san nicolas, San Nicolás de los ArroyosPeter Vidana
245301722/03/2026ArgentinaBuenos AiresEco Parque san nicolas, San Nicolás de los ArroyosGaston Lisandro Gabinetti
Page 1

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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. Smaller Lantana Butterfly (Strymon bazochii) – Species account. Accessed from www.ecoregistros.org on 23/09/2026.