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Nomada argentata 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Arthropoda Insecta Hymenoptera Apidae

Scientific Name: Nomada argentata Herrich-Schäffer, 1839

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2013
Date Assessed: 2013-07-10
Assessor(s): Smit, J.
Reviewer(s): Roberts, S., Nieto, A. & Scott, J.A.
Contributor(s): Schwarz, M.
Justification:

Global and European regional assessment: Near Threatened (NT)
EU 27 regional assessment: Near Threatened (NT)

The species is listed as Near Threatened because its area of occupancy (AOO) is 388 km2, and there is a continuing decline of the quality of the grasslands where the species occurs due to agricultural intensification. The species is considered threatened in many countries as well as extinct in others. The habitat of this species needs to be protected and conserved.

Geographic Range [top]

Range Description:Nomada argentata is endemic to Europe, it is distributed in many countries of central and eastern Europe. The extent of occurrence (EOO) is 3,331,122 km2 and the area of occupancy (AOO) is 388 km2.
Countries occurrence:
Native:
Austria; Belgium; Bulgaria; Croatia; Czech Republic; Denmark; Finland; Germany; Hungary; Ireland; Italy (Italy (mainland)); Poland; Romania; Slovakia; Slovenia; Sweden; Switzerland; United Kingdom (Great Britain)
Regionally extinct:
Netherlands; Norway
Additional data:
Estimated area of occupancy (AOO) - km2:388
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:

This species is very rare and populations have always been small, and there are not many recent records. In all the countries where it occurs, the species has declined or is extinct.


Current Population Trend:Decreasing
Additional data:
Continuing decline of mature individuals:Yes

Habitat and Ecology [top]

Habitat and Ecology:

This species inhabits grasslands (both wet and dry), which seem to be in decline. Nomada argentata is a brood parasite and its host is Andrena marginata. Possibly Andrena pellucens is also a host (Standfuss and Standfuss 2010). Its primary host bee, A. marginata, is a specialist foraging on flowers of Scabiosa columbaria and Succisa pratensis, and is itself, widely red-listed across Europe.

The species is univoltine (it has one generation per year) and flies in July and August.

Systems:Terrestrial

Use and Trade [top]

Use and Trade: This species is not traded or exploited commercially.

Threats [top]

Major Threat(s): Changes in agricultural practice (particularly through intensification in the use of grassland) have reduced the area of suitable habitat and floral resource availability for the host (Andrena marginata).

Conservation Actions [top]

Conservation Actions:

This species is included in the National Red Lists or Red Data Books of the following eight European countries: Czech Republic (Endangered; Farkac et al. 2005); Germany (Endangered; Westrich et al. 2011); Ireland (Critically Endangered; Fitzpatrick et al. 2006); Netherlands (Regionally Extinct; Peeters and Reemer 2003); Norway (Regionally Extinct; Kålås et al. 2010); Slovenia (Endangered; Anonymous 2002); Sweden (Critically Endangered; Gärdenfors 2010); Switzerland (Endangered; Amiet 1994).

The species is present in protected areas. 

There is conservation needed for the specific kind of grasslands (wet grasslands supporting host forage plant Succisa pratensis, and dry grasslands supporting both Succisa pratensis and Scabiosa columbaria), where the species occurs as well as monitoring of the population of this species. 


Citation: Smit, J. 2013. Nomada argentata. The IUCN Red List of Threatened Species 2013: e.T19199076A21431323. . Downloaded on 22 May 2018.
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