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Erythrodiplax corallina

Erythrodiplax corallina

Matapiojos Rojo

Family: Libellulidae
Order: Odonata
Class: Insecta
Phylum / Division: Arthropoda
Kingdom: Animalia

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Description


This is a medium-sized odonate species belonging to the Libellulidae family, characterized by a pronounced sexual dimorphism in its adult stage. Mature males exhibit an extremely striking body coloration, with an abdomen of an intense coral red or carmine hue, and a thorax that acquires dark reddish undertones with age due to a process of pruinescence. Their large compound eyes are dark reddish-brown on the upper surface. Conversely, females and immature males present a chromatic pattern dominated by yellowish and ochre tones, accompanied by diffuse black longitudinal bands and spots on the lateral sides of the abdomen. The wings are entirely membranous and hyaline, featuring a small golden amber spot at the base of the hindwings, and an elongated pterostigma that varies from yellow to red depending on the maturity of the individual. Their average wingspan ranges between 50 and 60 millimeters, while the total body length is approximately 35 to 42 millimeters.

Geographical distribution: This dragonfly is predominantly native to the southern cone of South America. It is a highly common and native species in Chile, where it is recorded continuously from the Atacama region to the Aysén region. Likewise, its presence is widely documented in Argentina, covering the Patagonian provinces, the central region, and the northwest of the country. Additional, albeit more scattered, records exist in temperate and subtropical areas of Bolivia, Peru, and southern Brazil, demonstrating a remarkable dispersal capability across the continent.

Habitat: This species primarily colonizes lentic freshwater environments at low to moderate altitudes. It is common to find this taxon in temporary or permanent lagoons, marshes, flood pools, artificial wetlands, irrigation canals, and riverbanks with extremely slow currents. It shows a strong preference for standing water bodies that possess abundant palustrine and floating vegetation, such as reeds, cattails, and aquatic weeds, which serve both as perches for resting adults and as shelter for developing nymphs.

Feeding: It is an obligate predator throughout its entire life cycle, exhibiting strictly carnivorous feeding habits. During its aquatic nymph stage, it utilizes a modified, protractile labium called a mask to capture a wide variety of prey, including mosquito larvae, small crustaceans, aquatic mites, and occasionally amphibian tadpoles. In its adult stage, it becomes an agile aerial predator that hunts on the wing using the perch-and-sally method. Its diet consists mainly of soft-bodied flying insects, such as dipterans, microlepidopterans, aphids, and other smaller odonates.

Behavior: It is a highly active, diurnal, and heliophilic insect, showing its peak dynamism during hours of maximum solar radiation. Males are intensely territorial and spend a significant portion of the day actively patrolling water margins or perched on strategic structures, such as dry branches or emergent vegetation, from which they defend their territory against rival males and locate receptive females. Their flight is fast, agile, and hovering, capable of abrupt aerial maneuvers. Females, conversely, maintain a more discreet profile, staying away from the water in surrounding vegetation until mating.

Reproduction: The reproductive cycle begins with courtship and the subsequent formation of the copulatory wheel in the air, which stabilizes as a tandem before settling on vegetation. After fertilization, the female performs exophytic oviposition. To achieve this, she hovers over the water´s surface, making rapid vertical movements and repeatedly tapping her abdomen against the water to release the fertilized eggs near aquatic plants. During this process, the male often conducts active aerial guarding, either remaining in tandem or hovering closely nearby to prevent interference from rival males. The nymphs are entirely aquatic and undergo multiple molts before their emergence and final metamorphosis.

Conservation status: This species is currently evaluated as Least Concern (LC) according to the criteria of the International Union for Conservation of Nature. Due to its vast geographical distribution, its capacity to adapt to anthropized environments such as agricultural reservoirs, and the general stability of its populations, it does not face critical threats of extinction in the short term. Nonetheless, the chemical contamination of freshwater sources, the excessive use of agricultural pesticides, and the systematic drainage of wetlands represent localized risk factors that degrade the quality of its natural habitats.



Compilation and publication: EcoRegistros – 19/08/2026




Geographic distribution


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Species photographs

Count: 137

Foto
Photography ID: 679571
  Adult

Villa Gesell
Buenos Aires
Argentina
03/16/2026
Marcos Garberoglio
Foto
Photography ID: 679316
  Adult

Lavalle
Mendoza
Argentina
03/24/2026
Manuel Godoy
Foto
Photography ID: 671103
  Adult

Olavarría
Buenos Aires
Argentina
02/01/2026
Erika Ippolito
Foto
Photography ID: 670873
 
Bialet Masse
Córdoba
Argentina
01/24/2026
Adrian Braidotti
Foto
Photography ID: 669145
  Adult

Luis Palacios
Santa Fe
Argentina
01/18/2026
Peter Vidana
Foto
Photography ID: 668709
  Adult

Luis Palacios
Santa Fe
Argentina
01/18/2026
Gaston Lisandro Gabinetti
Foto
Photography ID: 664477
  Adult

Mar de las Pampas
Buenos Aires
Argentina
12/13/2025
Eduardo Nadal
Foto
Photography ID: 659561
  Adult

Lujan de Cuyo
Mendoza
Argentina
12/10/2024
Manuel Godoy
Foto
Photography ID: 651953
  Adult

La Para
Córdoba
Argentina
03/01/2025
Walter Bustamante
Foto
Photography ID: 650765
  Adult

Miramar de Ansenuza
Córdoba
Argentina
03/02/2025
Walter Bustamante
Foto
Photography ID: 635168
  Adult

Maipu
Mendoza
Argentina
05/16/2025
Manuel Godoy
Foto
Photography ID: 626606
  Adult

Cercanias de General Pico
La Pampa
Argentina
03/14/2025
Fernanda Ferrari



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Species vocalizations

Last vocalizations published



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Species videos

Count: 1


Video ID: 2410
  Adult

Colonia 25 de Mayo
La Pampa
Argentina
02/28/2017
Claudia Mora


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Species reports



 Detail of places sorted by number of records






Species records

Count: 139



Page 1 of 14
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
245156924/03/2026ArgentinaMendozaJocoli, LavalleManuel Godoy
245211216/03/2026ArgentinaBuenos AiresVilla GesellMarcos Garberoglio
244870517/02/202609:11ArgentinaCórdobaReserva Municipal de La Para, La Para, Córdoba.2Gustavo Fernando Durán
242735401/02/2026ArgentinaBuenos AiresRuta 51, OlavarríaErika Ippolito
242646624/01/2026ArgentinaCórdobaBarrio Mirador del Lago, Bialet MasseAdrian Braidotti
242031818/01/2026ArgentinaSanta FeReserva natural Carancho Diablo, Luis PalaciosPeter Vidana
241888118/01/2026ArgentinaSanta FeReserva natural Carancho Diablo, Luis PalaciosGaston Lisandro Gabinetti
241076601/01/202610:38ArgentinaSanta FeCamino Rural, San Jerónimo Norte1Gustavo Fernando Durán
240393913/12/2025ArgentinaBuenos AiresMar de las PampasEduardo Nadal
228932616/05/2025ArgentinaMendozaLaguna San Roque, MaipuManuel Godoy
Page 1 of 14

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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. Erythrodiplax corallina – Species account. Accessed from www.ecoregistros.org on 14/09/2026.