Paragus constrictus
VU

Paragus constrictus

Local name: dynstäppblomfluga

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Photo: iNaturalist: (c) o_beckett98, all rights reserved, uploaded by o_beckett98

Overview

Paragus constrictus is a species of hoverfly. It is found in Southern Sweden and Denmark, Ireland, Spain, Germany, the French Alps, Switzerland, Austria, Italy, Yugoslavia and Turkey and Russia east of the Urals. This species may be distinguished from Paragus tibialis only by the shape of the male parameres.

In both sexes it shares with P. tibialis the character of entirely pale-haired abdominal tergites, so it is distinct from Paragus haemorrhous which has dark hairs. Images representing Paragus constrictus

Paragus constrictus faces significant threats from habitat loss and degradation due to agricultural intensification and urbanization across its range. The species' dependence on specific flowering plants for nectar and particular host plants for larval development makes it particularly vulnerable to changes in plant community composition and the widespread use of pesticides.

Threat summary

Habitat

This hoverfly species inhabits flower-rich grasslands, meadows, and agricultural margins, particularly favoring areas with diverse wildflower communities and traditional extensive farming systems. Adults require nectar sources from various flowering plants while larvae develop as predators of aphids on herbaceous vegetation.

Frequently asked questions

Why is dynstäppblomfluga classified as Vulnerable?
dynstäppblomfluga is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Paragus constrictus faces significant threats from habitat loss and degradation due to agricultural intensification and urbanization across its range. The species' dependence on specific flowering plants for nectar and particular host plants for larval development makes it particularly vulnerable to changes in plant community composition and the widespread use of pesticides.
Where does dynstäppblomfluga live?
dynstäppblomfluga occurs in Åland Islands, Austria, Bosnia & Herzegovina, Bulgaria, Denmark, and Estonia (plus 12 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to dynstäppblomfluga?
The main threats to dynstäppblomfluga are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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