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La región Centroamericana constituye un puente entre grandes faunas de Norteamérica y Suramérica. Este sitio persigue la incorporación de participantes que estén interesados en constituir un sitio que recoja información básica sobre la fauna de Arácnidos que habita esta región. Queremos llegar a ser una herramienta de consulta eficiente e interactiva para el uso diverso de la información, queremos actualizar las listas de faunas locales, paginas de especies, mapas de distribución y herramientas de clasificación e identificación para conocer mejor lo que tenemos que cuidar y heredar a nuestras futuras generaciones. Haste miembro y participa como colaborador!!
El uso de la información en este sitio está limitado a "uso justo, no comercial". 
Citación: Víquez, C y Longhorn, S. (2016). Arácnidos de Centroamérica, en linea en, accedido en {fecha de acceso}.

The Central American region is a biodiversity bridge between North and South American arachnid faunas. This site seeks the inclusion of participants who are interested in forming a cyber place that collects basic information about the arachnids that inhabits this region. We want to become a reference tool for efficient and interactive use of diverse information, we want to update the lists of local faunas, species pages, distribution maps, plus identification and classification tools to better understand what we have to care for and pass to our future generations. Please come and join us by becoming a collaborator.
Use of information on this site is limited to non-commercial "fair use". 
Citation: Víquez, C and Longhorn, S. (2016). Arachnids of Central America, online at, accessed on {date of access}.

Fungi (including lichens, symbioses of fungi with algae and cyanobacteria) constitute one of the largest and most significant organism groups in the world, yet are widely misunderstood and unjustifiably ignored. They are responsible for a range of key ecological functions, including nutrient cycling, water uptake by plants and soil health and formation. Their presence is critical for continuing life on Earth, and their conservation should be a high priority alongside animals and plants.

This website provides basic knowledge for identification of fungi (both lichenized and non-lichenized), and information about occurrence, associations and conservation.

Development of this information resource is taking place in association with:

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This site is intended as an online repository for taxonomic and phylogenetic information on the Macrostomorpha, a basal group of free-living flatworms, with particular emphasis for the genus Macrostomum. According to current molecular phylogenies the Macrostomorpha are the most basal taxon of the Rhabditophora, which encompass all free-living flatworms (except for the Catenulida) and all the parasitic flatworms.
One problem with these (and many other) free-living flatworms, is that they are tiny and fragile creatures. They are often only 1mm long and one therefore cannot usually perform DNA sequence analyses and have a complete physical reference specimen at the same time (as entire worms, or at least substantial parts of worms, have to be used for DNA extraction).
Detailed photomicrographic documentation of the still living worms can serve as an excellent reference of a sequenced specimen. In contrast, the classically deposited reference specimens are serial sections on slides, which are informative for detailed anatomical studies, but which are neither suitable for genetic analyses, nor useful for species identification in the field. We therefore think that detailed photomicrographic documentation, appropriately organised, annotated and accessible through the web, will usually be much more informative for the general biologist who encounters these creatures.

The Olivoidea ScratchPad is devoted to the neogastropod superfamily Olivoidea (Olividae, Bellolividae, Benthobiidae, Pseudolividae, Ancillariidae) with Harpidae, Babyloniidae (Muricoidea) and Colubrariidae (Buccinoidea) included but rather incomplete.
This site is very dynamic, with taxa being moved forth and  back from time to time, as new information becomes available on phylogeny and taxonomy.
"The superfamily Olivoidea (Gastropoda: Neogastropoda). An illustrated chronologic catalogue of literature, taxa and type figures, 1681 to present" (3rd edition, May 2018), is available now. Click the link to go to the literature record or click the thumbnail below to download directly.

Previous version are available as well:
First edition (2016)
Second edition (2017)
If you have any additions (specimen photographs, PDF's, opinions, etc.) please register and comment yourself or send an e-mail message.
May 2018. 1956 literature references; 2799 taxa descriptions; 3056 illustrations.