Mantura obtusata

The ängssyrejordloppa, or Mantura obtusata, is a small flea beetle belonging to the family Chrysomelidae. This diminutive insect measures approximately 2-3 millimeters in length and displays a characteristic metallic sheen typical of many flea beetles. Like other Mantura species, it possesses enlarged hind legs that enable rapid jumping when disturbed.

The species feeds primarily on sorrel plants (Rumex species), with larvae developing in the soil around host plant roots while adults consume leaves and stems.

This beetle is endemic to Sweden, where it inhabits traditional hay meadows and grasslands containing its preferred sorrel host plants. The species requires specific microhabitat conditions found in semi-natural grasslands that have been maintained through traditional agricultural practices for centuries.

The primary threat to M. obtusata stems from the widespread abandonment and conversion of traditional hay meadows across Sweden. Modern agricultural intensification has eliminated many suitable habitats, while remaining meadows face encroachment by scrubland and forest as traditional management practices decline. The species' specialized relationship with particular sorrel species and specific grassland conditions makes it highly vulnerable to habitat modification.

Current conservation efforts focus on habitat restoration and maintenance of traditional meadow management in areas where the species has been recorded. Some nature reserves now implement targeted grazing and mowing regimes designed to maintain suitable conditions.

The species' outlook remains precarious given its Critically Endangered status and the continued loss of traditional grassland habitats. Without sustained habitat management and protection of remaining meadow sites, population recovery appears unlikely.