Aglaostigma

Adults can be distinguished from other Tenthredinidae genera by specific wing venation patterns and abdominal structure, though precise diagnostic features require specialist examination. Larvae of Aglaostigma species are external feeders on host plants and can be recognized by their sawfly larval morphology combined with host association.

Species occur in temperate regions where their host plants grow, including forests, woodlands, and shrublands. Specific microhabitat preferences vary by species and correlate with host plant distribution.

Europe and North America. Distribution records from GBIF confirm presence in Denmark, Norway, and Sweden.

Adult activity occurs during the warmer months, with timing varying by species and latitude. Larval feeding typically coincides with host plant growing season.

Larvae are external leaf feeders on plants. Aglaostigma aucupariae has been observed feeding on Sorbus aucuparia (rowan). Aglaostigma fulvipes feeds on various Rosaceae including Rubus and Fragaria species.

• Sorbus aucuparia - larval hostfor A. aucupariae
• Rubus - larval hostfor A. fulvipes
• Fragaria - larval hostfor A. fulvipes

Development includes egg, larval, pupal, and adult stages. Larvae are free-living external feeders on host plant foliage. Pupation occurs in soil or protected locations. Adults are short-lived and do not feed.

Larvae function as primary consumers, transferring plant biomass to higher trophic levels. Defoliation by larvae may influence host plant fitness, though population densities are generally not outbreak-forming.

Minor agricultural relevance: A. fulvipes occasionally reaches pest status on cultivated strawberries (Fragaria × ananassa). Otherwise generally unnoticed by humans.

• Other Tenthredinidae generaDistinguished by wing venation, genitalia morphology, and larval host associations; requires specialist identification.

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy