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Troglotayosicus meijdeni sp. nov. A–B. Two views of the habitat of this species in the type locality, Rivera municipality, Huila, Colombia. C. Juvenile in the forest leaf litter, habitus in life. D. Ibid. for female. E. Habitus of live female under laboratory conditions, lateral aspect.
Source publication
We describe a new scorpion species in the troglomorphic genus Troglotayosicus Lourenço, 1981 from Colombia. Troglotayosicus meijdeni sp. nov. inhabits the forest leaf litter at Rivera municipality, on the western slope of the Eastern Andes. The male of the new species remains unknown; however, this species can be distinguished from other species in...
Contexts in source publication
Context 1
... only). The new species differs from others in the genus by: (i) lateral eyespot large, being the same size of the PDMi or larger ( , as compared to that of T. hirsutus and T. humiculum, such that the apex of the aculeus does not reach the level of the vesicle ventral margin in lateral aspect (Fig. 3G); and (v) pedipalp chela noticeably incrassate (Figs. 2E, 6), e.g., chela L:H ratio equal to ...
Context 2
... Figs. 2C-E, 3, 9. Description from preserved specimens. Base color, chelicerae and legs yellowish to chestnut; carapace, tergites, metasoma, and pedipalps yellowish (juveniles) or carapace, tergites and pedipalps chestnut, darker on pedipalps and metasomal segments (adults); sternites, coxosternal region and legs yellowish, darker in adults; pectines ...
Context 3
... meijdeni sp. nov. is known only from the type locality at Rivera municipality, Huila department, Colombia (Fig. 1). Specimens were collected at the border of a rudimentary local road (Figs. 2A-B). All were extracted, upon ultraviolet light detection (Stahnke 1972), from the leaf litter which had accumulated at the base of trees and shrubs (Figs. 2C-D). Careful, manual scrutiny of the litter layer was the only search method, which proved useful for the detection of this species, whereas no individuals were found wandering on the ...
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Citations
... Troglotayosicidae Troglotayosicus meijdeni (Botero-Trujillo et al., 2017) El Huila es considerado uno de los departamentos con mayor biodiversidad, esto se debe a su variabilidad en pisos térmicos, coberturas vegetales y sistemas montañosos que hacen única a la región huilense. Sin embargo, las cifras de la biodiversidad están aún lejos de evidenciar la riqueza florística y faunística del departamento. ...
Los arácnidos son considerados los depredadores más abundantes en los ecosistemas terrestres y los depredadores tope en las redes tróficas que se establecen en los suelos y que, por ende, influyen en la dinámica de las poblaciones de los demás artrópodos. Sin embargo, son uno de los grupos más desconocidos y poco estudiados a nivel de Colombia y sus regiones. En este trabajo con revisión bibliográfica y entrevistas elaboramos un listado de las especies reportadas, el conocimiento popular y las líneas de investigación que se desarrollan sobre aracnología en el departamento del Huila. Se reportan 94 especies de arácnidos, agrupados en 6 órdenes. 6 especies de importancia médica. Se registran por primera vez en Colombia los usos, creencias y costumbres asociadas a los arácnidos por comunidades urbanas, campesinas e indígenas. El capítulo es el acercamiento más actualizado que se tiene sobre la aracnofauna del Huila, su estudio y conocimiento popular.
El Huila es considerado uno de los departamentos con mayor biodiversidad, esto se debe a su variabilidad en pisos térmicos, coberturas vegetales y sistemas montañosos que hacen única a la región huilense. Sin embargo, las cifras de la biodiversidad están aún lejos de evidenciar la riqueza florística y faunística del departamento. De esta manera, el lector podrá encontrar dentro del libro Huila Biodiverso: Conceptos y desafíos la compilación de siete capítulos; los dos primeros desarrollados a nivel departamental, siendo el capítulo 1 una revisión de la riqueza de arácnidos, así como la percepción que las comunidades locales tienen sobre este grupo taxonómico. Para el capítulo 2, la investigación se centró en revisar las aves focales para el departamento del Huila. Los capítulos 3, 4 y 5 se desarrollaron en el Parque Jardín Botánico de Neiva. En el capítulo 3 se evaluó la riqueza faunística y la importancia cultural que tienen las especies para una comunidad local de Neiva; mientras que el capítulo 4 registró la riqueza florística en las distintas áreas de cobertura vegetal del Jardín Botánico, y el capítulo 5, reconoció la importancia que tiene esta área como ecosistema estratégico y de educación ambiental para la ciudad de Neiva y el departamento. Por otro lado, la presente publicación cuenta con un estudio a nivel nacional sobre las poblaciones de fauna silvestre ex situ, y cómo se integran en los procesos de conservación, tema que se aborda en el capítulo 6. Por último, en el capítulo 7 se cuenta con una investigación a nivel internacional donde se realizó un análisis filogenético al interior del género Alouatta con secuencias de ADN mitocondrial.
For several decades, Troglotayosicus Loureno, 1981, remained an enigmatic, monotypic scorpion genus believed to be troglobitic. The discovery and description in recent years of several endogean species of the genus, inhabiting the leaf litter of tropical rainforests in Colombia and Ecuador, advanced knowledge about these scorpions. The known distribution of Troglotayosicus was considerably expanded along the Andes, and it was demonstrated that, despite the absence of median ocelli, the genus is composed primarily of species that inhabit leaf litter. In the present study, Troglotayosicus ballvei, sp. nov., is described from Sacha Huagra Lodge, adjacent to Archidona Municipality, in Napo Province, Ecuador, raising the number of Troglotayosicus species to six, three each in Colombia and Ecuador. An updated map of the known distribution of the genus is presented.
The first integrative systematic revision of the relictual Asian scorpion family Pseudochactidae Gromov, 1998, making use of an unprecedented collection of material acquired during several expeditions to most of the type localities, is presented. The subfamilies, genera and species of Pseudochactidae are revised based on a phylogenetic analysis of 140 morphological characters and 8608 nucleotide base pairs of concatenated DNA sequence from two nuclear and three mitochondrial gene loci, and a multivariate statistical analysis of 22 ratios and 8 counts for 60 specimens. Three subfamilies, four genera and six species are recognized in the family. Troglokhammouaninae, subfam. nov., is created to restore the monophyly of the nominotypical subfamily Pseudochactinae Gromov, 1998. Aemngvantom, gen. nov., is created to accommodate Aemngvantom lao (Lourenço, 2012), comb. nov., and Aemngvantom thamnongpaseuam gen. et sp. nov. Four new synonyms are presented: Troglokhammouanus louisanneorum Lourenço, 2017 = Troglokhammouanus steineri Lourenço, 2007, syn. nov.; Vietbocap thienduongensis Lourenço and Pham, 2012 = Vietbocap canhi Lourenço and Pham, 2010, syn. nov.; Vietbocap aurantiacus Lourenço et al., 2018 = V. canhi, syn. nov.; Vietbocap quinquemilia Lourenço et al., 2018 = V. canhi, syn. nov. Revised diagnoses of the subfamilies, genera and species, with comparative images, a key and distribution maps are provided, along with a summary of available data on ecology and conservation status, where applicable. Among the Southeast Asian pseudochactids, all of which appear to be obligately cavernicolous, the three species of Vietbocapinae Lourenço, 2012, are highly troglomorphic whereas the sole species of Troglokhammouaninae is barely so. Applying recently revised definitions of the Schiner-Racovitza system for the classification of subterranean organisms, only Vietbocapinae can be considered troglobitic. The global diversity of cavernicolous, troglomorphic and troglobitic scorpions is similarly revisited and a key to ecological classification of cavernicolous and troglomorphic scorpions presented. The world totals of troglomorphic vs. troglobitic scorpions are currently 58 vs. 28 species, in 29 vs. 17 genera and 15 vs. 13 families, respectively.
A new epigean species belonging to the genus Troglotayosicus Lourenço, 1981 is described from southern Ecuador based on morphological traits. This enigmatic group of scorpions was known from a single locality in Ecuador and four localities in Colombia. Troglotayosicus muranunkae sp. n. is morphologically similar to the hypogean (troglobite species) T. vachoni Lourenço, 1981, but it differs from it by the trichobothrial pattern , shape of the carapace, and tegument sculpture. The new species was found actively wandering on the surface at night, which provides relevant ecological information and expands the distribution range of the genus 130 km southwards.
