A new cave-dwelling species of Charinus (Amblypygi: Charinidae) from northern Brazil

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Abstract

We present the description and illustration of a new species within the genus Charinus Simon, 1892, discovered in a cave located in the state of Tocantins, situated in the northern region of Brazil. Charinus tocantinensis sp. nov., can be distinguished from its congeners by the following combination of distinctive characters: pedipalp femur with four dorsal spines and four ventral spines; well-developed median eyes and median ocular tubercle; female gonopods sucker-like, slightly longer than wide, opening rounded and margins with fold with each a small posterior slit; cheliceral claw with ten denticles. In addition to the species description, we have included a key for identifying Charinus species in Brazil, along with a distribution map that highlights the known species in the country. This newly described species marks the first formal documentation of a Charinus species within the state of Tocantins. With the addition of this species, the global tally of recognized Charinus species now stands at 98, and Brazil, in particular, is home to a total of 44 formally described species within this genus.

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Biodiversity hotspots for conservation priorities.

N. Myers, R. A. Mittermeier, C Mittermeier … (2000)

Conservationists are far from able to assist all species under threat, if only for lack of funding. This places a premium on priorities: how can we support the most species at the least cost? One way is to identify 'biodiversity hotspots' where exceptional concentrations of endemic species are undergoing exceptional loss of habitat. As many as 44% of all species of vascular plants and 35% of all species in four vertebrate groups are confined to 25 hotspots comprising only 1.4% of the land surface of the Earth. This opens the way for a 'silver bullet' strategy on the part of conservation planners, focusing on these hotspots in proportion to their share of the world's species at risk.

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A fast GNU method to draw accurate scientific illustrations for taxonomy

Giuseppe Montesanto (2015)

Abstract Nowadays only digital figures are accepted by the most important journals of taxonomy. These may be produced by scanning conventional drawings, made with high precision technical ink-pens, which normally use capillary cartridge and various line widths. Digital drawing techniques that use vector graphics, have already been described in literature to support scientists in drawing figures and plates for scientific illustrations; these techniques use many different software and hardware devices. The present work gives step-by-step instructions on how to make accurate line drawings with a new procedure that uses bitmap graphics with the GNU Image Manipulation Program (GIMP). This method is noteworthy: it is very accurate, producing detailed lines at the highest resolution; the raster lines appear as realistic ink-made drawings; it is faster than the traditional way of making illustrations; everyone can use this simple technique; this method is completely free as it does not use expensive and licensed software and it can be used with different operating systems. The method has been developed drawing figures of terrestrial isopods and some examples are here given.

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Catalogue of the Smaller Arachnid Orders of the World

Mark S. Harvey (2003)

This authoritative catalogue will greatly assist readers in finding the correct taxonomic name for any given family, genus or species within each of the six arachnid orders treated. It contains a valuable summary of bibliographic information, enabling readers to access the worldwide literature for these smaller orders. The catalogue presents full bibliographic data on each of the taxa named thus far, treating over 1600 species. It contains the most current classification system for each group, some of which have not been catalogued on a world scale for over 70 years. A summary of taxonomic changes is included. This quality reference will be of immense value to arachnologists, systematists, taxonomists, ecologists and biodiversity professionals, especially those interested in tropical rainforest communities.