Last year, with my colleague Aurélien LABROCHE I have published new keys for centipedes of Northern France (existing and potentially existing species = 65 taxa at all), with many colored magnified pictures to simplify at best identification of centipedes of this area. The book is in French but it include also English parts: all the keys have been translated in English because these keys are also very useful for Belgium, Western Germany, Netherlands and Switzerland; and also helpful even if incomplete for North-Western Italy (several species from NW Italy and/or from Southern French Alps/Mediterranean area are obviously lacking). It is edited by the Groupe d'Etude des Invertébrés Armoricains (GRETIA) and can be ordered to the GRETIA. It can be ordered per example by IBAN; please ask to: secretariat@gretia.org to know more, also for the postal cost. The cost of the book itself (without postal cost) is only of 18 euros (108 color pages). Please see this link to know more (English abstract on 2nd page, with some little views of the book):
I'm sorry to not have written this message before; I have thought to it at the same time as I have written my message on Opiliones today (a similar book has just been published)... And I must admit that I have no time for Invertebrist forums (even French) since at least two years, because too much job.