New identification book on Opiliones , Natura Mediterraneo

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ATTENZIONE! Con tutti gli opilionidi è estremamente importante vedere l'oculario e la zona di fronte ad esso. Questo è vero in particolare per gli opilionidi a zampe corte nei quali il tridente è una caratteristica distintiva.
Si dovrebbe misurare la lunghezza del corpo. Se è possibile scattare fotografie prese dall'alto e di lato. Naturalmente non dovrebbe mancare una semplice foto dorsale. Anche se sono la caratteristica più notevole degli opilionidi, le zampe possono essere ignorate senza problemi perché non hanno virtualmente alcun ruolo nella determinazione.
Per la maggior parte degli Opiliones si arriva ad una determinazione già con le foto. Le eccezioni sono Nemastomatidae ('i piccoli neri') e soprattutto Trogulidae, per i quali è meglio l'analisi del DNA.

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Opiliones

New identification book on Opiliones

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cingulata2
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Città: France

8 Messaggi
Flora e Fauna

Inserito il - 21 luglio 2016 : 14:41:25

Dear Colleagues,

With Emmanuel Delfosse, we have published an identification book on Opiliones of Northern France, which include the 55 existing or potentially existing taxa in this area (40 recorded and 15 potentially present, based on the present knowledge on French harvestmen, including unpublished data). Between other useful informations, it also include a commented checklist with ecologic and geographic comments in the concerned area. We have done very practical keys with very numerous magnified pictures figures and a "special" presentation with the figures beside the concerned text in the keys; all on the basis of our numerous observations on the French fauna and also on the European bibliography. This has been a fairly long work but we are happy to have finished it; we hope that this book will help to "launch" a little more the group in France, given that there are many gaps to be filled on French harvestmen. We have chosen French as the used language and not English, because the main concerned readers are French invertebrists (some adjacent countries as Netherlands and UK already have good keys). But with the many figures and the particular presentation of the keys, the keys are not difficult to use even for the reader who don't know well French.

These keys will be useful also for North-Western Italy, because a big part of the species of this area are included in the book (but warning: several species are all the same lacking!). The Northern Italian reader could use this book as a "first detailed identification regard" for the most common species of his area as well as for several other species. The book include almost all species of Switzerland as well as of Western Germany.

Here is a link with a description in a pdf-file (which include two views in low-resolution of the cover and of one page of the book; its cost is 20 euros without postal cost): Link

Here is the English abstract:
This book begin by a brief general introduction to the world of Opiliones, where we learn, between other informations, that the main book concerning specifically the identification of the French fauna of harvestmen has been published in 1879. It give a presentation of the main useful bibliographic references to study French Opiliones, and the methods of capture and collection. It give also a commented list of known and potentially existing species in Northern France, which include the following regions: Alsace, Franche-Comté, Lorraine, Champagne-Ardenne, Burgundy, Nord-Pas-de-Calais, Picardie, Ile-de-France, Haute-Normandie, Basse-Normandie, Centre, Brittany and Pays de la Loire. Presently, 40 species have been formally found in the concerned area, and 15 other taxa are potentially present in the same. The necessary morphological criteria to identify species are detailed. We give identification keys for the 55 quoted taxa: a key of harvestmen families and keys of species for each family. These identification keys have been written and ordered to be very practical to use; more than 210 figures, of which the majority are colored magnified pictures, are included. Moreover, 11 « index cards » of easier identification on the basis of three criteria are given for 10 taxa. The included keys will be also very useful to identify the Opiliones fauna of surrounding countries like Belgium and the Luxemburg.

To know more about the order and the postal cost, don't hesitate to write to the Linnean Society (Société Linnéenne de Bordeaux in French): linneenne.assoATwanadoo.fr or bruno.cahuzacATu-bordeaux.fr (AT=@).

If some of you know this other work, the presentation of the keys are similar to the book on centipedes of Northern France published in 2015: Link

Good reading, with best regards

Etienne

Modificato da - cingulata2 in Data 21 luglio 2016 14:45:05

Lars Friman
Utente Senior