Species

BackAzorastia minutissima Frey, 1945

Azorastia minutissima Frey, 1945

Fly

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Insecta
  • Order: Diptera
  • Family: NANNODASTIIDAE
DD Data Deficient
IUCN Red List Status:

Countries of Occurrence:
Portugal - Azores

Archipelago(s):
Azores

Reviewer/s:
Russell, N.

Contributor/s:

Facilitators / Compilers/s:


Assessment Rationale:

Azoratia minutissima is an endemic species of the Azores (Portugal), being present (at least historically) in coastal areas in Flores, S. Jorge and S. Miguel islands. From the historical data, this species had a small Extent of Occurrence (1,740 km2) and a small Area of Occupancy (64 km2), but these are most likely underestimates. It is possible that this species has declined in the past as a result of human activity, but the present situation of this species needs to be further assessed, and further research is needed into its population, distribution, threats, ecology and life history. Conservation of coastal areas could also potentially aid this species conservation. Based upon the lack of recent data regarding this species' population, distribution, threats and ecology, it is not possible to accurately estimate the extinction risk of the species and it could theoretically fall into any category. Therefore, it is assessed as Data Deficient (DD).

Geographic Range:

Azorastia minutissima is an Azorean-endemic species that was described from the coastal areas of the islands of Flores, S. Jorge and S. Miguel (Azores, Portugal) (Borges et al. 2010). Based on the old historical data (Frey 1945), the Extent of Occurrence (EOO) would be ca. 1,740 km² and the Area of Occupancy (AOO) would be ca. 64 km². However, there is no recent information regarding the distribution of this species. However, there is no recent information regarding the distribution of this species, and the actual full distribution of the species is unknown.

Regions:
Portugal - Azores
Extent of Occurrence (EOO):
1740 (km2)
Area of Occupancy (AOO):
64 (km2)
Elevation Lower Limit:
0 (m)
Elevation Upper Limit:
50 (m)
Biogeographic Realms:
Presence:
Extant
Origin:
Endemic Azores
Seasonality:
Resident

Population:

No current population size estimates exist for this species, and the overall population size and trend are essentially unknown.

Habitat and Ecology

The ecology and traits of this species are unknown. In fact, little is known in general of the ecology and life history of the species of the two genera assigned to the Nannodastidae family (Papp and Mathis 2001). Adults are mostly associated with beaches in tropical and subtropical regions, being found in in caves or cliff overhangs with a rich substrate of bat and bird guano or mammal droppings. The immatures are unknown but are likely to develop in the organic substrate (Papp and Mathis 2001). This species was found in the coastal areas, including some urban coastal areas.

Major Threat(s):

A lack of information regarding the present status of this species precludes an assessment of potential threats. Nevertheless, the apparent habitat preferences of this species suggests that it might be affected by future habitat declines as a consequence of climate change (Ferreira et al., 2016) and human disturbance of the seashore. Past human disturbance of the seashore might have also affected this species.

Conservation Actions

The species is not protected by regional law. The present situation of this species needs to be further assessed, and further research is needed into its population, distribution, threats, ecology and life history. From what is known of its habitat preferences, conservation of natural seashore areas could potentially aid this species' conservation. Historically at least, this species was present in areas that are currently included in the Natural Park of S. Jorge.