Gnathisotoma Cassagnau 1957 ...

• Main Author: Fjellberg, Arne
• Format: Text
• Language: unknown
• Published: Zenodo 2010
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Entognatha; Collembola; Isotomidae; Gnathisotoma; Antarc*; Antarctic
• Online Access: https://dx.doi.org/10.5281/zenodo.5670736; https://zenodo.org/doi/10.5281/zenodo.5670736

Gnathisotoma Cassagnau, 1957 Cassagnau (1957) established the genus Gnathisotoma for the new species bicolor which was found in the central Pyrenees. Later Najt (1981) redescribed bicolor and described a new species G. deharvengi from snowfields in the Pyrenees and reported another possibly new species (known only from ecomorphic specimens) from the Cantabrian mountains in Spain. Yoshii (1990) described two more species from glaciers in Chile, G. patagonica and G. pallens, and also included the Antarctic species Isotoma klovstadi Carpenter, 1902 in Gnathisotoma. Stevens et al. (2006) transferred klovstadi to the genus Desoria. Further species of Gnathisotoma are not known. In the original diagnosis of the genus Cassagnau (1957) stressed the modified maxillae of bicolor. Najt (1981) defined Gnathisotoma on the reduced number of sensilla on the tergites, the modified maxilla and the absence of frontal setae on the ventral tube. Yoshii (1990) used the subsegmentation in proximal part of dens as a single ... : Published as part of Fjellberg, Arne, 2010, Cryophilic Isotomidae (Collembola) of the Northwestern Rocky Mountains, U. S. A., pp. 27-49 in Zootaxa 2513 on page 42, DOI: 10.5281/zenodo.196078 ...