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Cymaenes odilia

Cymaenes odilia

Hierbera Común

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

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Records from Berisso monte


Description


Characterized by a robust body and rapid, darting flight patterns, this small skipper butterfly displays a subtle yet intricate wing pattern. It has a wingspan ranging from 25 to 30 millimeters. The dorsal surface of the wings is predominantly dark brown, featuring small, semi-transparent hyaline spots on the forewings, which serve as key identifying markers. The ventral side is noticeably lighter, transitioning to shades of yellowish-brown or grayish-brown, frequently displaying a faint row of postdiscal spots on the hindwings. Its head is wide with large, prominent eyes, and the antennae possess a distinctive curved club or apiculus at the tip.

Geographical distribution This species is widely distributed throughout the Neotropical realm, stretching from southern Mexico through Central America into vast regions of South America, including documented records in Colombia, Venezuela, Ecuador, Peru, Brazil, Paraguay, and northern Argentina.

Habitat: It primarily colonizes open and transitional ecological zones, such as grasslands, forest edges, clearing areas within tropical and subtropical forests, disturbed agricultural lands, savannas, and domestic gardens. It thrives in sun-exposed environments rich in herbaceous vegetation.

Feeding The adult butterflies are strictly nectarivorous, gathering nutrients from various flowering herbaceous plants, particularly those in the Asteraceae and Verbenaceae families. Conversely, the caterpillars are specialized herbivores, feeding on the foliage of monocotyledonous plants, showing a strict preference for grasses (Poaceae), including species within the genera Paspalum and Panicum.

Behavior: Operating as a strictly diurnal insect, it exhibits a low, erratic, and incredibly swift flight close to the herbaceous layer. Males are highly territorial and engage in perching behavior on low leaves, waiting to intercept passing females or ward off rivals. During sunny intervals, they frequently bask with their hindwings spread flat and forewings held at an angle.

Reproduction The life cycle initiates when the female deposits individual eggs directly onto the leaves of suitable host plants. Once hatched, the larva constructs a protective shelter by rolling or folding a grass leaf blade and securing it with silk. The caterpillar remains inside this shelter during the day to avoid predators, emerging at night to feed. Pupation occurs inside this same leaf structure, where the chrysalis develops until the adult emerges.

Conservation status This taxon has not been evaluated (NE) by the International Union for Conservation of Nature (IUCN). Given its expansive geographical range, high tolerance for anthropogenically modified habitats, and the abundance of larval food plants, it is generally considered secure and not facing any immediate conservation threats.



Compilation and publication: EcoRegistros – 29/09/2026




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Foto
Photography ID: 391677
  Adult

Berisso
Buenos Aires
Argentina
01/17/2019
Ricardo Cadenas



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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
123117417/01/2019ArgentinaBuenos AiresBerisso monte, BerissoRicardo Cadenas
Page 1

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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. Cymaenes odilia – Species account. Accessed from www.ecoregistros.org on 29/09/2026.