Species

BackHelenoscoparia nigritalis (Walker in Melliss, 1875)

Helenoscoparia nigritalis (Walker in Melliss, 1875)

Small Chimney-sweep Grass Moth (English)

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

Countries of Occurrence:
Saint Helena - British Overseas Territory

Archipelago(s):
St. Helena

Assessor/s:
Pryce, D. & White, L.

Reviewer/s:
Gerlach, J.

Contributor/s:

Facilitators / Compilers/s:


Assessment Rationale:

While endemic to the small and remote island of St Helena in the South Atlantic Ocean, this species is common and widespread across the island and there are no known current threats. However, the species has a very low EOO (70 km²) and AOO (44 km²) and the number of current locations is 12. We therefore assess this species as Near Threatened as the loss of any locations and consequent potential decline in EOO and AOO is plausible with the potential arrival of any new predator that may have a preference for this species.

Geographic Range:

Endemic to the island of St Helena, in the South Atlantic Ocean, where it is widely distributed.

Regions:
Saint Helena - British Overseas Territory
Extent of Occurrence (EOO):
70 (km2)
Area of Occupancy (AOO):
44 (km2)
Elevation Lower Limit:
50 (m)
Elevation Upper Limit:
792 (m)
Biogeographic Realms:
South Atlantic Ocean
Presence:
Extant
Origin:
Endemic St. Helena
Seasonality:
Resident

Population:

This is a common and widespread species with no evidence of population decline.

Habitat and Ecology

This species is found relatively widely across the island of St Helena in the South Atlantic Ocean in native and non-native habitats (Karisch 2007).

Major Threat(s):

There is a potential threat to this species through the accidental introduction of new predatory non-native species to the island which could severely impact the population. The island had been prone to the accidental introductions through shipping in the past and this has happened repeatedly with predators such as the centipede Scolopendra morsitans Linnaeus, 1758 and the spider Xeropigo tridentiger (Pickard-Cambridge, 1869)

Conservation Actions

Any research and monitoring of this species would be of value