IUCN SSC Mid-Atlantic Island Invertebrates Specialist Group

Species

Back • Calliphona palmensis Bolívar, 1940

Calliphona palmensis Bolívar, 1940

Palma Green Bush-cricket

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Insecta
  • Order: Coleoptera
  • Family: Tettigoniidae
EN Endangered
IUCN Red List Status:
  • EX
  • EW
  • CR
  • EN
  • VU
  • NT
  • LC
  • DD
  • NE

Countries of Occurrence:
Spain - Canaries

Archipelago(s):
Canaries

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Assessor/s:
Hochkirch, A.

Reviewer/s:
Odé, B. & García, M.

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

Facilitators / Compilers/s:

Assessment Rationale:

The Palma Green Bush-cricket occurs mainly in laurel forests and is threatened by increasing wildfire frequencies. Its extent of occurrence (EOO) is 212 - 400 km², and its area of occupancy (AOO) is 28 km² with a maximum estimate of 200 km². There is a continuing decline in the area of occupancy (AOO), number of subpopulations, extent and quality of the habitat and number of mature individuals, and the number of locations is four. The species is therefore assessed as Endangered.

Geographic Range:

This species is endemic to La Palma (Canary Islands, Spain) (Bland et al. 1996, Arnedo et al. 2008). Its known extent of occurrence (EOO) is 212 km² with a maximum estimate of 400 km². Its known area of occupancy (AOO) is 28 km² with a maximum estimate of 200 km².

Regions:
Spain - Canaries
Extent of Occurrence (EOO):
212-400 (km2)
Area of Occupancy (AOO):
28-200 (km2)
Elevation Lower Limit:
400 (m)
Elevation Upper Limit:
1100 (m)
Biogeographic Realms:
Paleartic
Presence:
Extant
Origin:
Endemic Canaries
Seasonality:
Resident

Population:

A continuing decline in the area of occupancy (AOO), extent and quality of the habitat, number of subpopulations and number of mature individuals is inferred from the increasing wildfire frequency.

Habitat and Ecology

Laurel forest represents the main habitat of the species, but it may also occur in other forest habitat types. Its altitudinal range is 400 - 1,100 m.

Major Threat(s):

This species occurs mainly in laurel forests, which are still widespread on La Palma, but threatened by increasing wild fire frequencies. The number of locations based on this threat is four. The species may also be affected by landslides.

Conservation Actions

There are no conservation actions in place for this species, but it occurs in protected areas throughout its range. More research on its population trend and threats is needed. A proper fire management needs to be implemented to avoid future declines of the species.