Size criteria for the distinction between Cylindroiulus londinensis (Leach) and Cylindroiulus caeruleocinctus (Wood) (Diplopoda: Julidae)

Abstract

Ring number, body height and live weight are given for each stadium and sex of two Cylindroiulus species often confused in the literature. In each stadium there is no overlap between the height and weight of the two species, which makes it possible to identify specimens using size criteria alone. According to data from different places in Europe, intraspecific variation is not substantial enough to fill the size gap between the two species.

Keywords :

• Diplopoda
• Julidae
• Cylindroiulus
• body size
• taxonomy
• France