Agrenia atroviridis Fjellberg, 1986

Fjellberg, Arne & Bernard, Ernest C., 2009, Review of Agrenia Börner, 1906 with descriptions of four new species from North America (Collembola, Isotomidae), Zootaxa 2306, pp. 17-28 : 20

Agrenia atroviridis Fjellberg, 1986

Fig. 3 B

This species was originally described from glacial ice in Garibaldi Park, British Columbia. We have examined recent material from Alaska (Matanuska Glacier) and British Columbia (Overlord and Wedgemount Glaciers) (all collected by P. Hartzell). The species appears to be restricted to the glacial fauna, having adaptations such as extremely dark greenish black colour all over the body ( Fig. 3 B) and short extremities. Also, the compact mucro with a small apical tooth is a trait generally present in winter Agrenia spp. and other Collembola associated with snow and ice.

Figures

FIGURE 3. Habitus of Agrenia spp. A. A. agilis; B. A. atroviridis; C. A. cyanura, lateral; (D) A. cyanura, dorsal. Scale bars = 1 mm.