Species

BackCalliphona koenigi Krauss, 1892

Calliphona koenigi Krauss, 1892

Tenerife Green Bush-cricket

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Insecta
  • Order: Coleoptera
  • Family: Tettigoniidae
NT Near Treatened
IUCN Red List Status:

Countries of Occurrence:
Spain - Canaries

Archipelago(s):
Canaries

Assessor/s:
Hochkirch, A.

Reviewer/s:
Odé, B. & García, M.

Contributor/s:
Jakobs, D. & Kranz, M.

Facilitators / Compilers/s:


Assessment Rationale:

The Tenerife Green Bush-cricket is confined to the forested areas of northern Tenerife. It is threatened by increasing wildfire frequencies, which have recently destroyed parts of its habitat. The species is flightless and it usually occurs at a low density, however the subpopulations are currently still well connected. The number of locations is 12-15 (based upon the size of recent wildfires). Its extent of occurrence (EOO) is c. 1,000 km² and its known area of occupancy (AOO) is 76 - 400 km². There is a continuing decline in the extent of occurrence (EOO), area of occupancy (AOO), extent and quality of the habitat, number of locations and number of mature individuals. As it nearly meets the thresholds for a threatened Category under Criterion B, it is here assessed as Near Threatened.

Geographic Range:

This species is endemic to Tenerife, Canary Islands, Spain (Holzapfel 1970, Gangwere et al. 1972, Bland et al. 1996, Arnedo et al. 2008). Its extent of occurrence (EOO) is c. 1,000 km² and its known area of occupancy (AOO) is 76 km² with a maximum estimate of 400 km².

Regions:
Spain - Canaries
Extent of Occurrence (EOO):
1000 (km2)
Area of Occupancy (AOO):
76-400 (km2)
Elevation Lower Limit:
300 (m)
Elevation Upper Limit:
1100 (m)
Biogeographic Realms:
Paleartic
Presence:
Extant
Origin:
Endemic Canaries
Seasonality:
Resident

Population:

The species is flightless and it usually occurs at a low density, however the subpopulations are currently still well connected. No data on population size or trend are available, but it is assumed to be decreasing as a consequence of recent wildfires. There is a continuing decline in the extent of occurrence (EOO), area of occupancy (AOO), extent and quality of the habitat, number of locations and number of mature individuals.

Habitat and Ecology

Calliphona koenigi occurs in forests (mainly laurel forests, but also pine forests and gardens). Its altitudinal range is 300 - 1,100 m.

Major Threat(s):

The major threat to this species is the increase in wildfire frequencies, which have destroyed parts of its habitat. Future threats may be volcanic eruptions and landslides. The number of locations is 12-15 (based on the size of recent wildfires).

Conservation Actions

There are no specific conservation actions in place for this species, but parts of its habitats are in protected areas. There is a need for research on its population trend and threats. A proper fire management is needed in order to avoid future declines of this species.