Habitat:
Anonconotus occidentalis inhabits Alpine grasslands and pastures as well as gappy dwarf shrub heathland and similar places.
Life cycle:
The adults are found from July to October. They usually spend their time on the ground or on low vegetation. Especially the females are very variable and vary in color from green to brown and reddish brown.
Remarks:
Anonconotus occidentalis occurs in the SW-Alps in France and Italy approximately from Briançon in the North to Valle Stura in the South. Anonconotus occidentalis may occur in high densities and is often quite common within its range between 1300 and 2900m.
Some decades ago the SW-Alpine Anonconotus species except for A. alpinus have all been regarded as A. apenninigenus. Acording to present knowledge the real A. apenninigenus is restricted to a small part of the northern Apennines and misses in the Alps.