The second confirmed record of the scorpion genus Chactas Gervais, 1844 (Scorpiones, Chactidae) from Ecuador with description of a new species from the Amazonian Province of Sucumbíos

Lourenço, Wilson R.

doi:10.3897/zookeys.372.6665

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…A number of species have been described in Venezuela and isolated taxa are reported in Brazil and Peru. Species are also known from Costa Rica, Panama and the Island of Trinidad [ 29 ]. There are no species within this genus analyzed from either toxinological or clinical standpoints.…”

Section: Annotated List Of Ecuadorian Scorpion Speciesmentioning

confidence: 99%

“… Chactas moreti Lourenço, 2014:19–23. Type material collected at San Pablo de Kantesiya (0.1515S, 76.2535 W), near the Aguarico River, province of “Sucumbíus” [sic] (Sucumbíos, northern Ecuador) [ 29 ]. Chactas yaupi Lourenço, 2014:173–177.…”

Section: Annotated List Of Ecuadorian Scorpion Speciesmentioning

confidence: 99%

“… Chactas yaupi Lourenço, 2014:173–177. Collected north of the town of Yaupi (2.5116S, 77.569 W), between Yaupi and Morona, province of Morona Santiago [ 31 ]. …”

Section: Annotated List Of Ecuadorian Scorpion Speciesmentioning

confidence: 99%

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A checklist of the scorpions of Ecuador (Arachnida: Scorpiones), with notes on the distribution and medical significance of some species

Brito

Borges

2015

J Venom Anim Toxins Incl Trop Dis

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Ecuador harbors one of the most diverse Neotropical scorpion faunas, hereby updated to 47 species contained within eight genera and five families, which inhabits the “Costa” (n = 17), “Sierra” (n = 34), “Oriente” (n = 16) and “Insular” (n = 2) biogeographical regions, corresponding to the western coastal, Andean, Amazonian, and the Galápagos archipelago regions, respectively. The genus Tityus Koch, in the family Buthidae, responsible for severe/fatal accidents elsewhere in northern South America and the Amazonia, is represented in Ecuador by 16 species, including T. asthenes, which has caused fatalities in Colombia and Panama, and now in the Ecuadorian provinces of Morona Santiago and Sucumbíos. Underestimation of the medical significance of scorpion envenoming in Ecuador arises from the fact that Centruroides margaritatus (Gervais) (family Buthidae) and Teuthraustes atramentarius Simon (family Chactidae), whose venoms show low toxicity towards vertebrates, frequently envenom humans in the highly populated Guayas and Pichincha provinces. This work also updates the local scorpion faunal endemicity (74.5 %) and its geographical distribution, and reviews available medical/biochemical information on each species in the light of the increasing problem of scorpionism in the country. A proposal is hereby put forward to classify the Ecuadorian scorpions based on their potential medical importance.

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Section: Annotated List Of Ecuadorian Scorpion Speciesmentioning

confidence: 99%

Section: Annotated List Of Ecuadorian Scorpion Speciesmentioning

confidence: 99%

See 1 more Smart Citation

A checklist of the scorpions of Ecuador (Arachnida: Scorpiones), with notes on the distribution and medical significance of some species

Brito

Borges

2015

J Venom Anim Toxins Incl Trop Dis

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Description of the male of <I>Chactas braziliensis</I> Lourenço, Aguiar & Franklin 2005 (Scorpiones: Chactidae)

et al. 2018

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The genus Chactas Gervais 1844 belonging to the family Chactidae Pocock 1893 is characterized by 4 to 6 trichobothria on the ventral aspect of patella, and fixed finger of chela without an extra-large accessory tooth; male pedipalps very long and slender compared to those of females (Lourenço & Dastych 2001). This Neotropical scorpion genus occurs exclusively from Central to South America (Lourenço 1991; Teruel & Cozijin 2011), and in the Caribbean Islands (Francke & Boos 1986). Currently, most of species being found in Colombia and Venezuela (González-Sponga 1996; Lourenço 1997). Few species are known from other South American countries (Rossi 2014). This genus was originally described by Gervais (1844) for Chactas vanbenedenii (Gervais 1843) from Colombia. According to Lourenço (2014), morphological diagnosis of Chactas species is rather difficult, mainly because several species are extremely similar. Thus, the taxonomic resolution of Chactas has been the subject of constant debate (Lourenço 2014). Kraepelin (1912) revised the genus proposing the existence of three natural groups of species within Chactas. Later, Mello-Leitão (1945) raised these groups to the subgenera rank. In 1978, González-Sponga proposed the creation of two new subgenera on the basis of the relative number of trichobothria. However, Lourenço (1997) suggested that the variation in this single character is not sufficient for the division of the genus into subgenera. Despite Brazil's vast area, only a single Chactas species, Chactas braziliensis, has been recorded in the country. This species was described on the basis of four female individuals collected from the western portion of Amazonas state in the Amazon Basin (Lourenço et al. 2005). To date, males of this species remain unknown. Recently a chactid scorpion collected in the Parque Nacional Serra do Divisor, Acre, near the Peruvian border in 2001 was sent to the Universidade Federal de Pernambuco in Recife, Brazil, and it was identified as a male of Chactas braziliensis. The male of this species is described for the first time in this paper. Materials and methods Measurements were taken using a digital caliper and are given in mm. Photos were taken using a DSLR Nikon D5500 with an 18-55 mm Nikkor lens and an attached Raynox DCR-250 lens. Drawings were prepared by using photographs taken on Inkscape 0.92, using a Wacom MTE-450 Bamboo tablet. The morphological terminology mostly follows Ochoa et al. (2010; 2013). The material examined is deposited in the Arachnological collection of the Universidade Federal de Pernambuco, Recife, Brazil. Comparisons with C. braziliensis were made through a holotype high definition photos and other Chactas species were made through the revision of the bibliography.

show abstract

The second confirmed record of the scorpion genus Chactas Gervais, 1844 (Scorpiones, Chactidae) from Ecuador with description of a new species from the Amazonian Province of Sucumbíos

Cited by 2 publications

References 6 publications

A checklist of the scorpions of Ecuador (Arachnida: Scorpiones), with notes on the distribution and medical significance of some species

A checklist of the scorpions of Ecuador (Arachnida: Scorpiones), with notes on the distribution and medical significance of some species

Description of the male of <I>Chactas braziliensis</I> Lourenço, Aguiar & Franklin 2005 (Scorpiones: Chactidae)

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