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Female secondary sexual traits in spiders: Adaptive interpretations of the sternum projection in the pholcid Holocnemus pluchei
(Elsevier Gmbh, 2019-10)
Sexually dimorphic traits are the outcome of a network of selective pressures acting upon each sex. While male secondary sexual traits are frequently restricted to intrasexual competition, female ornaments or weapons are ...
First Record of an Extinct Marabou Stork in the Neogene of South America
(Polish Academy of Sciences. Institute of Paleobiology, 2008-12)
We describe a new large species of marabou stork, Leptoptilus patagonicus(Ciconiiformes, Ciconiidae, Leptoptilini), from the late Miocene Puerto Madryn Formation, Chubut Province, Argentina. The specimen consists mainly ...
Análisis morfométrico de Pleurodema thaul (Lesson, 1826) (Anura, Leptodactylidae) y algunas consideraciones acerca de su morfología esternal
(International Society for the Study and Conservation of Amphibians, 2001)
The male postabdomen of the "ancestral" archostematan beetle Tetraphalerus bruchi Heller, 1913 (Ommatidae) and its phylogenetic significance
(Elsevier, 2011-03)
External and internal features of the male postabdomen of Tetraphalerus bruchi were examined with a broad spectrum of morphological techniques and are described in detail. The conditions found in males of Tetraphalerus are ...
Economic anatomy of Rheidae and its implication for the archeological record
(Springer, 2019-12)
The economic anatomy for Rheidae (Class: Birds) which includes the calculation of the Modified General Utility Index (MGUI) and its component indexes: Meat Utility Index (MUI), Marrow Index (MI), White Grease Index (WGI), ...
Description of the final instar larva of argia serva hagein selys, 1865 (Odonata coenagrionidae)
(Academia Brasileira de Ciencias, 2018-07)
The American genus Argia, with more than 100 species described, is the most speciose genus of Odonata in the world. In this contribution, the final stadium larva of Argia serva, the southernmost distributed species of ...
On three new Euathlus tarantulas from Argentina and cladistic analysis of the genus
(American Arachnological Society, 2015-11)
Three unknown species of Euathlus Ausserer 1875 (Araneae: Theraphosidae) are recognized and formally described. Euathlus diamante Ferretti sp. nov., E. sagei Ferretti sp. nov., and E. tenebrarum Ferretti sp. nov. are ...
Cocconeis neuquina Frenguelli (Bacillariophyta): emended description, lectotypification, ecology, and geographical distribution
(Biopress Limited, 2018-04)
In this article, we examine the type material of Cocconeis neuquina Frenguelli from the type locality in Neuquén province and other samples in southern Santa Cruz province (Patagonia, Argentina). Cocconeis neuquina is a ...
Five new scorpion species of genus Brachistosternus (Scorpiones: Bothriuridae) from the deserts of Chile and Peru, with comments about some poorly studied diagnostic characters of the genus
(Magnolia Press, 2018-12)
Five new scorpion species of genus Brachistosternus of Chile and Peru are described. Brachistosternus gayi n. sp. is a high Andean species of north central Chile. Brachistosternus philippii n. sp. occurs near the coast of ...
Two new species of Staurosira and Pseudostaurosira (Bacillariophyta) from the highlands of Argentina (south-central Andes) and two new nomenclatural combinations
(Magnolia Press, 2018-08)
Two new araphid diatom (Bacillariophyta) species, Pseudostaurosira oliveraiana sp. nov. and Staurosira catamarcensis sp. nov. are described from fossil material taken from the saline Laguna Colorada (Argentinian Altiplano). ...