Nuevas especies de la familia Mecysmaucheniidae (Araneae) de Chile y Argentina

Abstract

Two new species of the family Mecysmaucheniidae are described: Mecysmauchenius platnicki n. sp., from Malleco, Chile and Mecysmauchenioides quetrihue n. sp., from Neuquén, Argentina, the latter being the second known species of the genus.Key words: Araneae, Mecysmaucheniidae, Mecysmauchenius, Mecysmauchenioides, new species. ResumenSe describen dos nuevas especies de la familia Mecysmaucheniidae: Mecysmauchenius platnicki, sp. nov., de Malleco, Chile y Mecysmauchenioides quetrihue, sp. nov., de Neuquén, Argentina, constituyendo esta última la segunda especie conocida de su género. Palabras-clave:

Conservation Priority Areas for Narrow-Range Reptiles of the Pampas Grassland, East-Central Argentina

“…The first pattern confirmed previous records of narrow-range species in the study area, such as P. casuhatiensis and Ly. elegantissimus in the Ventania mountain range (Gallardo, 1968; Di Pietro et al, 2018), and Li. tandiliensis and Li.…”

“…multimaculatus (Duméril and Bibron, 1837), Li. tandiliensis Vega et al, 2008, Lygophis elegantissimus (Koslowsky, 1896), and Pristidactylus casuhatiensis (Gallardo, 1968). In our study, we employed these narrow-range reptiles as biodiversity surrogate species of the Pampas grassland because (1) they are representative and charismatic species that inhabit each of their main environments, (2) they are categorized as threatened by the IUCN (one Critically Endangered, one Endangered, two Vulnerable, one Least Concern, and two not categorized; IUCN, 2021), and (3) they have an essential ecological role in the ecosystem as they are part of the intermediate food chain levels, some preying on most of the insects and anurans present in the study area (Vega, 1999; Di Pietro et al, 2020b; respectively).…”

A new genus and species of Ingolfiellidae (Crustacea, Ingolfiellida) from the hyporheic zone in the Sierra de la Ventana, and its biogeographic relevance

“…Due to their age, these hills have been part of important evolutionary, geologic and climatic processes. Their present fauna and flora are a result of these events and present numerous endemisms: the cactus "barrilito" Opuntia ventanensis (Long, 2012); the "iguana de cobre" Pristidactylus casuhatiensis (Gallardo, 1968); the rodent "pericote bonaerense" Phyllotis bonariensis Crespo, 1964; and the migid Calathotarsus simony Schiapelli & Gerschman, 1975. The linking of Yacana ventania n. gen. n. sp.…”

Nuevos registros de arañas fósiles en ámbar de Chiapas, México: Thymoites carboti sp. nov. (Araneae, Theridiidae) y Mimetus sp. (Araneae, Mimetidae)

“…Las arañas (Araneae) forman parte de la clase Arachnida. Si bien aún no existe una teoría aceptada sobre las relaciones entre cada uno de los órdenes que componen a este grupo (Grismado et al, 2014;Sharma et al, 2014;Delfín-González et al, 2017, Giribet, 2018, la mayoría de los análisis filogenéticos reconocen que Araneae está en el mismo clado de los "tetrapulmonados", compartiendo un lugar con los órdenes Amblypygi, Thelyphonida y Schizomida (Grismado et al, 2014, Giribet, 2018. En la actualidad, las arañas están representadas por 50,146 especies vivientes, distribuidas en 4,254 géneros y 132 familias (World Spider Catalog, 2022).…”